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182 results on '"Tatsushi Nakamoto"'

3. Measurement of displacement cross-sections of copper and iron for proton with kinetic energies in the range 0.4 – 3 GeV

Author

Shoichi Hasegawa, Tatsushi Nakamoto, Hiroki Iwamoto, Fujio Maekawa, Shin-ichiro Meigo, Makoto Yoshida, Taku Ishida, Shunsuke Makimura, Yosuke Iwamoto, and Hiroki Matsuda

Subjects
Nuclear and High Energy Physics, Range (particle radiation), Materials science, Proton, 010308 nuclear & particles physics, fungi, Radiation dose, 0211 other engineering and technologies, chemistry.chemical_element, 02 engineering and technology, Kinetic energy, 01 natural sciences, Copper, Displacement (vector), Nuclear Energy and Engineering, chemistry, 0103 physical sciences, Atom, Radiation damage, 021108 energy, Atomic physics
Abstract

To estimate the structural damages of materials in accelerator facilities, displacement per atom (dpa) is widely employed as a damage index, calculated based on the displacement cross-section obtai...

Published
2020
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4. Research and Development of Future Radiation-Resistant Superconducting Magnets With Mineral Insulated REBCO Coils

Author

Kento Suzuki, Makoto Yoshida, Masami Iio, Michinaka Sugano, Toru Ogitsu, and Tatsushi Nakamoto

Subjects
Materials science, Radiation resistant, Superconducting magnet, Condensed Matter Physics, 01 natural sciences, Electronic, Optical and Magnetic Materials, Conductor, Experimental proof, Electromagnetic coil, visual_art, Magnet, 0103 physical sciences, visual_art.visual_art_medium, Adhesive, Ceramic, Electrical and Electronic Engineering, Composite material, 010306 general physics
Abstract

Research and development of a mineral insulated superconducting magnet based on REBCO coated conductor has been performed at the High Energy Accelerator Research Organization (KEK) to establish technology for a future radiation resistant high field magnet. A goal of the research is an experimental proof of a small-scale demonstration magnet composed of mineral insulated REBCO coils. Application research on ceramic coating technology to REBCO coated conductor is in progress. A short sample study confirms the adaptability of ceramic coating for electrical insulation of REBCO tape. In addition, an electrical insulation film is formed on the surface of a long tape of about 14 m in length by applying the ceramic coating. a first prototype double pancake coil is wound with the ceramic coated REBCO tape with a ceramic adhesive.

Published
2020
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5. Magnetic Field Design of a Full-Scale Prototype of the HL-LHC Beam Separation Dipole With Geometrical and Iron-Saturation Corrections

Author

Hiroshi Kawamata, Ezio Todesco, Ryutaro Okada, Kento Suzuki, Hirokatsu Ohata, Naoto Takahashi, Ken-ichi Sasaki, Norio Higashi, Kenichi Tanaka, Toru Ogitsu, Andrea Musso, Tatsushi Nakamoto, Nobuhiro Kimura, Naoki Okada, Hiroshi Ikeda, M. Iida, Michinaka Sugano, and Y. Ikemoto

Subjects
Physics, Large Hadron Collider, Physics::Instrumentation and Detectors, High Luminosity Large Hadron Collider, Condensed Matter Physics, Electronic, Optical and Magnetic Materials, Magnetic field, Nuclear physics, Cross section (physics), Dipole, Electromagnetic coil, Magnet, Physics::Accelerator Physics, High Energy Physics::Experiment, Electrical and Electronic Engineering, Beam (structure)
Abstract

High Energy Research Organization (KEK) has developed three short-scale model magnets of the beam separation dipole, MBXF, which is to be installed for the High Luminosity Large Hadron Collider, HL-LHC, in CERN. We will soon undertake production of a prototype of MBXF and its magnetic design has to be finalized before the fabrication. We established a strategy for designing the new coil cross section by taking into account different error sources for its field quality. In this paper, focused on b 3 , we describe how the final b 3 integral, which should be within 2.9 units according to the acceptance criteria, is achievable.

Published
2020
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6. Improvement in Training Performance by Enhancing Coil Mechanical Support in the Beam Separation Dipole Model Magnet for the HL-LHC Upgrade

Author

Ezio Todesco, Naoto Takahashi, Hiroshi Kawamata, Hiroshi Ikeda, Hirokatsu Ohhata, Kenichi Tanaka, Kento Suzuki, Andrea Musso, Michinaka Sugano, Norio Higashi, Y. Ikemoto, Nobuhiro Kimura, Naoki Okada, Ken-ichi Sasaki, M. Iida, Toru Ogitsu, Tatsushi Nakamoto, and Ryutaro Okada

Subjects
Physics, Field (physics), Physics::Instrumentation and Detectors, Aperture, Mechanical engineering, Condensed Matter Physics, 01 natural sciences, Electronic, Optical and Magnetic Materials, symbols.namesake, Dipole, Electromagnetic coil, Magnet, 0103 physical sciences, symbols, Physics::Accelerator Physics, Electrical and Electronic Engineering, 010306 general physics, Magnetic dipole, Lorentz force, Beam (structure)
Abstract

Nb-Ti based large-aperture beam separation dipoles (MBXFs) will be installed on both sides of two interaction points, ATLAS and CMS, for the high-luminosity LHC upgrade. The most important requirements for MBXF is a coil aperture of 150 mm and the field integral of 35 T⋅m. Nominal dipole field is 5.6 T at 12 kA and 1.9 K. KEK is in charge of developing MBXF within a framework of CERN-KEK collaboration. This study reports training performance of three 2-m long model magnets (MBXFS1–3) assembled under different mechanical support conditions. Azimuthal pre-stress both in the straight section and at coil end, and axial pre-load were controlled to counteract Lorentz force. In MBXFS2 and 3, wet-winding was also applied but solely to the coil end. Quench start locations for the model magnets are compared to validate the effectiveness of each support method.

Published
2020
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7. Performance of the Quench Protection Heater for the HL-LHC Beam Separation Dipole

Author

Kento Suzuki, Toru Ogitsu, Ken-ichi Sasaki, Naoto Takahashi, Hiroshi Kawamata, Ezio Todesco, Ryutaro Okada, Nobuhiro Kimura, Hiroshi Ikeda, Norio Higashi, Kenichi Tanaka, Hirokatsu Ohata, M. Iida, Andrea Musso, Tatsushi Nakamoto, Naoki Okada, Michinaka Sugano, and Y. Ikemoto

Subjects
Materials science, Large Hadron Collider, Field (physics), Nuclear engineering, Separation (aeronautics), High Luminosity Large Hadron Collider, Condensed Matter Physics, 01 natural sciences, Electronic, Optical and Magnetic Materials, Dipole, Cold test, Magnet, 0103 physical sciences, Electrical and Electronic Engineering, 010306 general physics, Beam (structure)
Abstract

In collaboration with CERN, High Energy Accelerator Research Organization (KEK) has designed and developed short-scale model magnets of the beam separation dipole, MBXF, which will be installed for the High Luminosity Large Hadron Collider, HL-LHC. A new quench protection heater for MBXF was designed and tested during the cold test of the short-scale models. Combining data taken since the test of the 1st model magnet, we confirmed the maximum hotspot temperatures are well below 300 K in the case of the low field (1 T) and high field (5 T) quenches, respectively. In addition, a simulation model was developed and tuned with the obtained data for the full-scale prototype magnet. The hotspot temperature after quench initiation was then computed with the new heater circuit and found to be below 300 K even for the case of failure in firing the heater.

Published
2020
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10. Development of 2-m Model Magnet of the Beam Separation Dipole With New Iron Cross Section for the High-Luminosity LHC Upgrade

Author

Naoki Okada, Ken-ichi Sasaki, Kento Suzuki, Naoto Takahashi, Ezio Todesco, Kenichi Tanaka, Norio Higashi, M. Iida, Hirokatsu Ohhata, Tatsushi Nakamoto, Nobuhiro Kimura, Andrea Musso, Y. Ikemoto, Toru Ogitsu, Ryutaro Okada, Michinaka Sugano, Shun Enomoto, and Hiroshi Kawamata

Subjects
Physics, Large Hadron Collider, Mechanical engineering, Superconducting magnet, Condensed Matter Physics, 01 natural sciences, Electronic, Optical and Magnetic Materials, Cross section (physics), Electromagnetic coil, Magnet, 0103 physical sciences, Electrical and Electronic Engineering, 010306 general physics, Quadrupole magnet, Yoke, Beam (structure)
Abstract

Large aperture beam separation dipoles (D1 magnet) must be developed for the interaction regions in the high-luminosity large hadron collider (HL-LHC). The most important specifications of this magnet are a coil aperture of 150 mm and field integral of 35 Tm, which will be realized by Nb-Ti superconducting magnets operated at 12 kA at 1.9 K. High Energy Accelerator Research Organization (KEK) is developing 2-m-long model magnets for D1. The first model magnet was re-assembled after increasing the coil pre-stress (MBXFS1b); subsequently, it showed good training performance, achieving maximum quench current, which was higher than the ultimate current. However, mechanical support of the coils was still insufficient in MBXFS1b. Especially at coil end, some coil end blocks deformed toward the coil bore due to Lorentz force. In the second model magnet (MBXFS2), the change of iron yoke cross section was requested so that the position of heat exchanger holes penetrating iron yoke is in agreement with those of the final focusing Nb 3 Sn quadrupole magnets. Because this has a large impact on field quality, magnetic design including the magnet's cross section and coil end shape was updated. Some countermeasures were also taken to enhance mechanical support of the coil such as wet-winding with radiation-resistant resin at coil end and increase in coil pre-stress. This paper reports design update, fabrication, and training performance of MBXFS2 with new iron cross section.

Published
2019
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11. Test Result of the HL-LHC Beam Separation Dipole Model Magnet With the New Iron Cross Section

Author

K. Suzuki, Hiroshi Kawamata, Nobuhiro Kimura, M. Iida, Ryutaro Okada, Hirokatsu Ohata, Shun Enomoto, Andrea Musso, Michinaka Sugano, Naoki Okada, Y. Ikemoto, Tatsushi Nakamoto, Ezio Todesco, Norio Higashi, and Toru Ogitsu

Subjects
Physics, Large Hadron Collider, High Luminosity Large Hadron Collider, Condensed Matter Physics, 01 natural sciences, Electronic, Optical and Magnetic Materials, Magnetic field, Nuclear physics, Cross section (physics), Dipole, Electromagnetic coil, Magnet, 0103 physical sciences, Electrical and Electronic Engineering, 010306 general physics, Beam (structure)
Abstract

We report the test results of the second short model magnet of the beam separation dipole for the High Luminosity Large Hadron Collider. The test shows that the second model has a good training performance and is capable of operating at the ultimate current that corresponds to 108% of the nominal one. Magnetic field measurements reveal that b 3 is around 18 units, which is 15 units higher than the calculations. This can be explained in part by geometrical coil deformation caused during the construction process.

Published
2019
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12. Quench protection for high Tc superconducting rotating gantry model magnet with I-V characteristics measured in the temperature range of 40–83 K

Author

Tatsushi Nakamoto, Michinaka Sugano, Ryutaro Okada, Kento Suzuki, Toru Ogitsu, Masami Iio, Ye Yang, and Minoru Yoshida

Subjects
010302 applied physics, Superconductivity, Materials science, Nuclear engineering, General Physics and Astronomy, Atmospheric temperature range, 01 natural sciences, Conductor, law.invention, Operating temperature, Electromagnetic coil, law, Magnet, 0103 physical sciences, General Materials Science, Resistor, 010306 general physics, Voltage
Abstract

We studied quench protection criteria for high transition-temperature superconducting (HTS) model magnet that was fabricated to demonstrate the possibility of HTS-based gantry. We aim to evaluate the frequency of “flux jump” events of this model magnet with varying operating temperature ( T OP ), which was observed during previous excitation tests. Therefore, we investigated the operation margin for various T OP s based on simulation and developed the quench protection system of this model magnet. A short sample of rare-earth barium copper oxide coated conductor, which was used for winding the HTS coil, was prepared and its current-voltage characteristics were measured between the temperature range of 40–83 K. The obtained results were then implemented to our stand-alone simulation to perform the quench study. The maximum allowed elapsed time after the magnet quench was investigated for different operating currents and T OP s by varying the detection voltages ( V det s). Then, a protection circuit was integrated into our simulation to optimize the size of dump resistor ( R dump ) and V det . Finally, it was observed that R dump must not be above 4 Ω and V det must be kept below 50 mV to protect the HTS model magnet.

Published
2019
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15. The High Luminosity LHC interaction region magnets towards series production

Author

Giorgio Apollinari, A. Musso, Vittorio Marinozzi, Marta Bajko, F. Toral, Stoyan Stoynev, Q. Peng, Franco Mangiarotti, Guram Chlachidze, N. Kimura, Lucio Fiscarelli, Hugues Bajas, Paolo Ferracin, Marco Statera, A. Milanese, Soren Prestemon, Jesse Schmalzle, S. Wei, J. Fleiter, Massimo Sorbi, L. Bottura, M. Prioli, Joseph Muratore, Glyn Kirby, P. Joshi, Q. Xu, Arnaud Devred, Thomas Strauss, R. Carcagno, Kathleen Amm, A. Foussat, P. Fabbricatore, M. Duda, Tatsushi Nakamoto, Giorgio Ambrosio, A. Pampaloni, Gerard Willering, D. Chen, J. Wang, Bernardo Bordini, H. Felice, A. Bersani, Lance D. Cooley, S. Enomoto, V. Lombardo, Ezio Todesco, Michinaka Sugano, G. de Rijk, Sandor Feher, Amalia Ballarino, Matthias Mentink, V. Parma, S. Farinon, Samuele Mariotto, P. Wanderer, S. Izquierdo Bermudez, F. Nobrega, M. Yu, I. Pong, Maria Baldini, Michael Anerella, J. Garcia Matos, B. Caiffi, Leonardo Paolo Rossi, Jac Perez, P. Fessia, D. Duarte Ramos, K. Suzuki, G.L. Sabbi, S. Russenschuck, H. Prin, Stephen A. Gourlay, Toru Ogitsu, L. Gong, and Commissariat à l'énergie atomique et aux énergies alternatives (CEA)

Subjects
magnet: design, Physics::Instrumentation and Detectors, fabrication, Series production, 01 natural sciences, 7. Clean energy, Nuclear physics, 0103 physical sciences, CERN LHC Coll: upgrade, Materials Chemistry, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], Detectors and Experimental Techniques, Electrical and Electronic Engineering, niobium: titanium, 010306 general physics, activity report, 010302 applied physics, Physics, Large Hadron Collider, Luminosity (scattering theory), Metals and Alloys, magnet: superconductivity, Condensed Matter Physics, magnet: technology, quadrupole lens, Magnet, Ceramics and Composites, Physics::Accelerator Physics, niobium: tin
Abstract

The High Luminosity Large Hadron Collider (HL-LHC) is the new flagship project of CERN. First endorsed in 2013 and approved in 2016, HL-LHC is an upgrade of the accelerator aiming to increase by a factor of ten the statistics of the LHC collisions at the horizon of 2035–2040. HL-LHC relies on cutting edge technologies: among them, large aperture superconducting magnets will replace the present hardware to allow a smaller beam size in two interaction points (IPs). The project involves the construction of about 150 magnets of six different types: the quadrupole triplet, two main dipoles and three orbit correctors. The triplet, manufactured at CERN and in the USA, will consist of 30 magnets based on Nb3Sn technology, with an operational peak field of 11.4 T. These will be the first quadrupole Nb3Sn magnets installed in a particle accelerator. The other five types of magnets, all relying on Nb–Ti technology, present non-trivial challenges in the design and construction; they will be manufactured as part of in-kind contribution under the responsibility of institutes in Japan, China, Spain, and Italy. The project is now in the phase of transition between qualification through short models and prototypes and the beginning of the series construction. In this paper we review the magnet requirements, the reasons for selecting the design, the technological challenges with respect to previous projects, and we summarize the steps that have been taken to validate the baseline.

Published
2021
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16. COMET Phase-I technical design report

Author

Y. Nakatsugawa, C. V. Tao, Y. Nakamura, Y. Ban, T. Kachelhoffer, Arsen Khvedelidze, G. Kumsiashvili, Minoru Yoshida, Alexey Volkov, T. Kormoll, Zainol Abidin Ibrahim, I. Trekov, Yu Nakazawa, Tsutomu Mibe, M. J. Lee, Tamaki Yoshioka, Paul Dauncey, N. Miyamoto, S. Hashimoto, Kai Zuber, E. Gillies, P. Jonsson, P. J. Dornan, Zviad Tsamalaidze, J. Tojo, H. Nakai, K. Sasaki, N. Kazak, Yoshitaka Eguchi, Dietmar Bauer, V. Ponariadov, Jordan Nash, P. Sarin, A. M. Teixeira, Jie Zhang, H. Yamaguchi, Y. Zhang, K. Ueno, F. Mohamad Idris, J. Tang, A. Sato, J. C. Angélique, T. Yano, O. Kemularia, M. Tomášek, T. Hayashi, L. B. Epshteyn, G. Kozlov, R. P. Litchfield, S. J. Chen, A. Kurup, Benjamin Krikler, T. Yamane, T. Ota, Y. Miyazaki, M. Koike, Joe Sato, A. Jansen, Kazuki Okamoto, I. H. Hashim, M. S. Nioradze, Tengizi Toriashvili, Y. Tevzadze, Y. K. Semertzidis, E. Kaneva, Yasuhiro Makida, C. Wu, W. Da Silva, Yoshitaka Kuno, Michael Finger Jr, C. Cârloganu, Eitaro Hamada, Rei Kawashima, Y. Fukao, I. Lomidze, K. A. Mohamed Kamal Azmi, W. C. Yao, R. Abramishvili, T. Y. Xing, Yang Yang, G. Quémener, T. T. H. Loan, Y. E. Cheung, G. V. Fedotovich, A. Melnik, T. Takayanagi, Tatsushi Nakamoto, R. R. Akhmetshin, Kou Oishi, Dz. Shoukavy, Masami Iio, T. Thanh, Jaroslaw Pasternak, J. Odell, Saki Ohta, F. Ignatov, K. Okinaka, O. Markin, Hajime Nishiguchi, Vladimir Rusinov, Satoshi Mihara, K. Noguchi, C. Densham, X. S. Jiang, P. Warin-Charpentier, M. Slunecka, Y. Uchida, T. Numao, Masashi Tanaka, C. Omori, Yurii Kurochkin, A. Drutskoy, G. Ban, D. N. Grigoriev, M. Yamanaka, T. T. Chau, Masaharu Aoki, Vaclav Vrba, V. Niess, S. S. Tolmachev, A. Paulau, Vassili Kazanin, A. Issadykov, N. Tsverava, T. Motoishi, D. Baygarashev, T. Tachimoto, J. L. Gabriel, D. Aznabayev, Yuki Fujii, Iuri Bagaturia, P. Loveridge, Jin Shei Lai, A. Yamamoto, V. H. Hai, Manabu Moritsu, D. Lomidze, H. Natori, A. Allin, Yuki Nakai, H. Katayama, Yohei Matsuda, Takahiro Okamura, Kiyotomo Kawagoe, A. Bondar, A. Melkadze, H. Trang, E. P. Velicheva, V. Duginov, M. L. Wong, T. S. Wong, Y. Mori, A. A. Ruban, M. Sugano, H. Sakamoto, Y. Igarashi, V. Anishchik, G.G. Macharashvili, Maxim V. Zdorovets, Hidetomo Yoshida, D. Stöckinger, George Adamov, M. Kravchenko, Yoshiaki Kuriyama, Hai-Bo Li, K. Gritsay, J. K. Chen, Toru Ogitsu, N. Shigyo, Yu.V. Yudin, B. Lagrange, F. Kapusta, T. Hiasa, T. Uchida, Masahito Tomizawa, Y. J. Mao, W. A. T. Wan Abdullah, S. Fayer, P. Evtoukhovich, V. A. Kalinnikov, O. Hayashi, B. Yeo, W. G. Li, K. Ishibashi, A. Moiseenko, D. Picters, T. Itahashi, B. Carniol, A. N. Kozyrev, B. M. Sabirov, G. G. Devidze, Y. Yuan, Laboratoire de physique corpusculaire de Caen (LPCC), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique de Clermont (LPC), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Clermont Auvergne (UCA), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE (UMR_7585)), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Centre de Calcul de l'IN2P3 (CC-IN2P3), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), COMET, Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP), Science and Technology Facilities Council (STFC), The Royal Society, Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Clermont Auvergne (UCA)-Centre National de la Recherche Scientifique (CNRS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), and Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)

Subjects
Physics - Instrumentation and Detectors, C01 Electroweak model, Proton, data acquisition, NEUTRINO MASSES, General Physics and Astronomy, beyond the standard model, drift chamber: drift tube, beam transport, cosmic background radiation, pi: production, 7. Clean energy, 01 natural sciences, Physics, Particles & Fields, High Energy Physics - Experiment, LEPTON-FLAVOR VIOLATION, High Energy Physics - Experiment (hep-ex), +electron+nucleus%22">muon- nucleus --> electron nucleus, C08 Tests of conservation laws, muon: particle source, physics.ins-det, Physics, Higgs bosons, track data analysis, DOUBLE-BETA-DECAY, lepton: flavor: violation, Instrumentation and Detectors (physics.ins-det), H10 Experimental detector systems, Physical Sciences, SIMULATION, intense muon physics, Particle physics, Comet, Physics, Multidisciplinary, Cosmic background radiation, FOS: Physical sciences, programming, C30 Experiments using hadron beams, SCINTILLATOR, Double beta decay, 0103 physical sciences, Sensitivity (control systems), [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], 010306 general physics, numerical calculations, DETECTOR, spatial resolution, activity report, detector: design, Muon, Science & Technology, electroweak symmetry breaking, 010308 nuclear & particles physics, Branching fraction, hep-ex, muon: yield, MUON, CONSTRAINTS, bibliography, trigger, CONVERSION, calorimeter: electromagnetic, electronics: readout, RADIATION, charged lepton flavour violation, construction technologies and materials, Lepton, H50 Detector system design
Abstract

The Technical Design for the COMET Phase-I experiment is presented in this paper. COMET is an experiment at J-PARC, Japan, which will search for neutrinoless conversion of muons into electrons in the field of an aluminium nucleus ($\mu-e$ conversion, $\mu^- N \to e^- N$); a lepton flavor violating process. The experimental sensitivity goal for this process in the Phase-I experiment is $3.1\times10^{-15}$, or 90 % upper limit of branching ratio of $7\times 10^{-15}$, which is a factor of 100 improvement over the existing limit. The expected number of background events is 0.032. To achieve the target sensitivity and background level, the 3.2 kW 8 GeV proton beam from J-PARC will be used. Two types of detectors, CyDet and StrECAL, will be used for detecting the \mue conversion events, and for measuring the beam-related background events in view of the Phase-II experiment, respectively. Results from simulation on signal and background estimations are also described., Comment: A minor correction applied in Eq. 3

Published
2020
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17. Measurement of Displacement Cross Section of Structural Materials Utilized in the Proton Accelerator Facilities with the Kinematic Energy above 400 MeV

Author

Fujio Maekawa, Shin-ichiro Meigo, Shunsuke Makimura, Makoto Yoshida, Taku Ishida, Shoichi Hasegawa, Hiroki Matsuda, Yosuke Iwamoto, Hiroki Iwamoto, and Tatsushi Nakamoto

Subjects
Physics, Cross section (physics), Structural material, Proton, law, Atom, Particle accelerator, Kinematics, Displacement (vector), Energy (signal processing), law.invention, Computational physics
Abstract

For damage estimation of structural material in the accelerator facility, displacement per atom (DPA) is widely employed as an index of the damage calculated based on the displacement cross section obtained with the calculation model. Although the DPA is employed as the standard, the experimental data of displacement cross section are scarce for a proton in the energy region above 20 MeV. Among the calculation models, the difference exists about 8 times so that experimental data of the displacement cross section is crucial to validate the model. To obtain the displacement cross section, we conducted the experiment in J-PARC. As a preliminary result, the displacement cross section of copper was successfully obtained for 3-GeV proton. The present results showed that the widely utilized the Norgertt-Robinson-Torrens (NRT) model overestimates the cross section as suggested by the previous experiment for protons with lower energy.

Published
2020
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18. HE-LHC: The High-Energy Large Hadron Collider Future Circular Collider Conceptual Design Report Volume 4

Author

Pushpalatha C Bhat, B. Seeber, C. Pagliarone, Marco Statera, Victor P. Goncalves, Daria Astapovych, W. Bartmann, S. Iwamoto, M. Mentink, Alessandro Tricoli, E. R. Bielert, Laurent Chevalier, Patrick Koppenburg, Marco Calviani, C. Montag, P. Spiller, Jan Uythoven, P. Di Nezza, G. Guillermo Canton, B. Sailer, Markus Elsing, Sara Khatibi, Luca Vecchi, Luigi Palumbo, J. P. Penttinen, T. Podzorny, Maneesh Kumar, J. M. Rifflet, C. Kotnig, Jean Zinn-Justin, Christopher B. Verhaaren, A. Chernoded, Alessandro Bertarelli, L. M. Tkachenko, C. Koeberl, P. J. Mallon, M. Takeuchi, W. Venturini Delsolaro, G. Lamanna, S. Weinzierl, J. Gao, W. Kaabi, David D'Enterria, D. Barna, Paolo Castelnovo, Rajat Gupta, Oliver Boine-Frankenheim, Adarsh Pyarelal, Andreas Salzburger, Tessa Charles, M.E. Biagini, O. Panella, M. Stuart, A. Kollegger, V. Garcia Diaz, Olcay Bolukbasi, Maurizio Pierini, H. Aksakal, Tord Riemann, Abhishek M. Iyer, V. Shiltsev, D. Buttazzo, J. Blümlein, Prateek Agrawal, L. Sestini, Martin Bauer, Felicitas Pauss, S. Fiorendi, F. Bossu, Marco Nardecchia, C. Leonidopoulos, Wojciech Kotlarski, A. Saba, I. Bautista-Guzmán, W. Hillert, Giorgio Ambrosio, T. Lehtinen, Michael Andrew Parker, Silvia Taroni, Gian F. Giudice, Ph. Lebrun, Johann A. Briffa, T. Risselada, Giuseppe Lerner, A. Lechner, L. S. Miralles, M. Kuze, J. M. Valet, P. S. B. Dev, S. Holleis, Ph. Schwemling, M. Biglietti, S. Banerjee, Thomas Schörner-Sadenius, A. Sanz Ull, V. Tikhomirov, S. Savelyeva, Jiayin Gu, D. Zhou, Federico Ravotti, S. A. Bogacz, Daniele Mirarchi, R. Tomás García, Yann Coadou, F. Yu, Y. Cai, T. Lari, F. Holdener, D. Shwartz, C. Bhat, Ramesh Gupta, Markus Klute, E. Palmieri, P. Collier, Branislav Sitar, Yves Sirois, Livio Fanò, S. Rojas-Torres, E. Locci, Ruben Garcia Alia, I. Božović Jelisavić, R. Chehab, J. A. Aguilar-Saavedra, M. Pasquali, A. Di Cicco, Bernhard Auchmann, Klaus Heinemann, Alessia Tricomi, D. Lucchesi, B. Haerer, M. Morrone, Paolo Giacomelli, Sonia Carra, A. Senol, Ivan Koop, Luca Silvestrini, Anna Stakia, Heather Gray, E. Skordis, A. D. Kovalenko, Paul Langacker, R. Li, Bernardo Bordini, R. Rata, Arjan Verweij, Shehu S. AbdusSalam, Andrey Karyukhin, U. van Rienen, Gianluigi Arduini, Bernhard Holzer, S. A. Nikitin, S. S. Kozub, Satoshi Mishima, B. Di Micco, S. Izquierdo Bermudez, N. Pukhaeva, Nigel Watson, F. Prino, Jean-Michel Sallese, Sotirios Vlachos, Alessandro Vicini, A. Valassi, Daniel Treille, F. Dordei, A. M. Fernandez Navarro, B. Dziewit, Marcello Abbrescia, J. M. Hauptman, I. Chaikovska, Paolo Giubellino, Michael J. Baker, V.V. Kashikhin, Friedrich Lackner, Filippo Sala, A. Langner, D. Pulikowski, H. Eriksson, Matteo Turri, Andrea Wulzer, M. Aiba, Lisa Borgonovi, I. Morozov, V. Haurylavets, J. F. Croteau, S. Boselli, L. A. Gonzalez Gomez, Claudia Tambasco, F. Mahmoudi, Sébastien Descotes-Genon, A. Luciani, Pavel Piminov, M. Varasteh, T. Herzig, Sandra Aumon, Cristina Bernini, Joseph Bramante, Roberta Arnaldi, G. Zick, Daniel Schulte, R. Santoro, Anna Kulesza, I. Turk Cakir, M. Nonis, Silvia Posada Arias, Livia Soffi, T. Wojtoń, E. Cennini, Florian Bauer, B. Rousset, J.-L. Grenard, C. Neubüser, Frederic Derue, Loukas Gouskos, Rainer Wallny, G. Calderini, M. Merk, M. Mühlegger, Roberto Cimino, M. Ramsey-Musolf, P. Rebello Teles, Mario Galanti, Mikhail Shaposhnikov, A. Andreazza, Maria Vittoria Garzelli, Masaya Ishino, José W. F. Valle, Colin Bernet, G. Velev, Cristina Botta, E. Fischer, J. Malclés, Giuseppe Montenero, Tripurari Srivastava, E. Renner, Shahnam Gorgi Zadeh, D. Cantore-Cavalli, Paul Laycock, J. Komppula, Simon C. Hopkins, Helmut Burkhardt, Eric Lancon, I. Aichinger, Andre Sznajder, F. Bordry, Massimo Giovannozzi, Aidan Robson, Anna Giunta, A. Carvalho, S. Farinon, Daniel Wollmann, M. Fouaidy, Martti Raidal, R. Gerard, Giovanni Volpini, U. Niedermayer, A. Alekou, Alexander J.G. Lunt, Vincenzo Cavasinni, Andrzej Siodmok, U. Kaya, Matthias Schott, Marumi Kado, S. A. Arsenyev, José Zurita, John Osborne, Patrick Meade, Gianmarco Bovone, G. Li, Klaus Schlenga, Antti Stenvall, D. Duellmann, Werner Riegler, I. Garzia, Yasuyuki Okumura, G. Pikurs, F. Maltoni, Massimo Sorbi, M. Arzeo, B. Strauss, Y. W. Baek, Mauro Chiesa, K. Ilyina-Brunner, Javier L. Albacete, R. Farinelli, C. Pes, Nicolas Morange, S. M. Zernov, U. Wagner, Emmanuelle Perez, G. G. Da Silveira, J. Neundorf, Néstor Armesto, T. Hahn, Roman N. Lee, Roderik Bruce, B. Y. Sharkov, T. du Pree, G. Cibinetto, Evelin Meoni, R. Rinaldesi, James A. Ellison, Radim Slovak, Silvia Franchino, Mikko Laine, T. Pugnat, S. P. Das, Yuji Enari, Emanuela Barzi, Cihan Bayindir, R. Boels, Jana Faltova, M. Moreno Llácer, Scott A. Yost, Michael Spannowsky, Florian Burkart, Marcin Chrzaszcz, K. Suzuki, Luca Trentadue, S. Masciocchi, Gilad Perez, Steve Peggs, K. Sugita, Eleonora Belli, Carmine Senatore, K. Y. Oyulmaz, Aldo Deandrea, Irakli Minashvili, Desmond P. Barber, M. I. Martínez-Hernández, A. Apyan, S. 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Kalinowski, Michele Cascella, Francesco Giffoni, Alessandro Polini, Georges Azuelos, M. Prioli, Wolfgang Altmannshofer, S. K. Patra, H. J. He, J. J. Aguilera-Verdugo, Hannu Paukkunen, P. Chomaz, Shoji Asai, Nicolas Magnin, Gavin P. Salam, R. Wang, F. Avino, Alexander Romanenko, A. Rossi, Steve Muanza, Richard Ruiz, Dmitry Teytelman, S. Klöppel, S. Atieh, M. Mohammadi Najafabadi, L. Apolinario, Andrea Tesi, M. Maggiora, A. Falkowski, Janusz Gluza, M. Sauvain, Hamzeh Khanpour, S. Chance, Ansgar Denner, Ma. Greco, Andreas Papaefstathiou, Manuela Boscolo, Joydeep Chakrabortty, E. Franco, R. R. Bosley, G. Peón, Fred Olness, Simone Alioli, Andrea Gaddi, M. K. Sullivan, M. Segreti, M. Panareo, Florian Goertz, Z. G. Zhao, H. Chanal, O. Martin, P. Azzurri, Agnieszka Chmielinska, M. Kordiaczyńska, O. Brunner, J. Von Ahnen, Jose Santiago, K. Foraz, Y. Alexahin, Marcello Mannelli, Christian Schwanenberger, S. Ganjour, Simone Marzani, T. M. Taylor, S. Di Vita, J. Womersley, I. 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Saez de Jauregui, Maria Rescigno, Stephan Eisenhardt, Andrea Dainese, Z. Drásal, G. H. Corral, J. M. Camalich, John Ellis, E. Gabrielli, L. Rumyantsev, A. Caliskan, K. Brunner, K. Tang, P. Sopicki, J. Fan, Marcin Kucharczyk, S. Gorgi Zadeh, Carlos A. Salgado, Simone Bologna, Y. Muttoni, A. Chancé, Patrick Jenny, Mark Boland, G. Yang, G. Wilkinson, Roger J. Hernández-Pinto, M. Novák, Gennady Stupakov, E. Jensen, Lance D. Cooley, Torbjörn Sjöstrand, S. Su, Matthew Luzum, J. Casas, Per Osland, T. Robens, Oscar A. Sampayo, Evgeny Levichev, P. N. Ratoff, G. Rolandi, M. A. Valdivia Garcia, Anthony Keith Morley, L. van Riesen-Haupt, A. Sublet, M. A. Mazzoni, J.L. Gutierrez, A. Abramov, Abbas Kenan Ciftci, A. Provino, L. Delle Rose, John Fox, Barry M. Dillon, V. Smirnov, G. N. Taylor, Anke-Susanne Müller, C. Pira, Fulvio Piccinini, A. Faus-Golfe, Pietro Antonioli, S. Sanfilippo, Julien Cogan, A. Ribon, Andrew Hutton, Frank Zimmermann, Lev Dudko, Erez Etzion, J. Polinski, G. Bencivenni, M. Gil Costa, L. K. Gladilin, Yannis Papaphilippou, Michael Spira, Maria Paola Lombardo, M. Fiascaris, Darius A. Faroughy, S. O. Kara, Peter Braun-Munzinger, A. Wohlfahrt, A. A. Krasnov, S.A. Gourlay, W. Da Silva, Jacqueline Keintzel, Radja Boughezal, Renat Sadykov, L. R. Sulak, Valentin V. Khoze, T. Tydecks, S. Puławski, Daniel de Florian, Pedro Schwaller, A. Akay, Nicola Serra, Sukanta Dutta, Christophe Royon, Alessandro Ricci, A. Kuendig, C. G. Honorato, K. Kołodziej, L. Deniau, Michael Kramer, J. Ferradas Troitino, A. Arbey, A. M. Staśto, Marcel Demarteau, Ralph Aßmann, O. Grimm, D. Forkel-Wirth, Owain Rhodri Jones, A. M. Kolano, G. Chiarello, William Trischuk, Andrea Dell'Acqua, Elisabetta Gallo, H. Song, Frank Petriello, N. Ibarrola, C. Colldelram, A. I. Ryazanov, A. Meier, Phillip Allport, J. de Blas, S. Chattopadhyay, Massimo Florio, X. Jiang, Bertrand Baudouy, T. Otto, Tevong You, Christoph Englert, Roberto Pittau, G. M. Bilei, Matthew McCullough, N. S. Ramírez-Uribe, J. Charles, Amalia Ballarino, Federico Antinori, A. V. Kotwal, P. Le Guen, Berndt Müller, Chiara Roda, Xavier Buffat, D. K. Hong, Matthias Liepe, G. Gorine, V. A. Okorokov, D. Bozzini, N. Simand, Giuseppe Francesco Tartarelli, C. Marquet, R. Contino, A. M. Teixeira, R. Trant, Roberto Losito, M. Quispe, Valery I. Telnov, Helga Timko, D. Lissauer, Giulio Aielli, Giorgio Chiarelli, M. J. Baldwin, A. Winter, X. Sarasola, E. E. Boos, Aleandro Nisati, Cedric Garion, Monica D'Onofrio, S. M. Gascon-Shotkin, Daniele Barducci, G. Rosaz, Nathaniel Craig, L. D’Aloia Schwartzentruber, A. Falou, A. Henriques, Tobias Hurth, Michael Eisterer, Andreas Grau, Austin Ball, D. Delikaris, P. A. McIntosh, E. Graverini, Kadri Ozdemir, F. Valchkova, Marco Zanetti, Guenakh Mitselmakher, S. Albergo, Peter Levai, Caterina Vernieri, F. Stivanello, Michael Barnes, Henri Bachacou, Daniel Fournier, L. T. Wang, D. Boutin, S. Moretti, B. Riemann, Michael Murray, Aleksandr Azatov, C. T. A. Cook, Valentina Maria Cairo, J. B. De Vivie De Regie, H. Schmickler, M. Schenk, Georgios Voutsinas, André Schöning, S. G. Bondarenko, Giorgio Bellomo, Andrei Seryi, Jane Nachtman, Clement Helsens, E. De Lucia, Jakob Salfeld-Nebgen, Lorenzo Pezzotti, Z. Townsend, B. Dalena, Mogens Dam, Yasar Onel, Yi-Ming Zhong, B. Curé, A. A. Kolomiets, A. M. Valente-Feliciano, Laurette Ponce, David Olivier Jamin, P. Krkotic, Alexandre Louzguiti, Marina Putti, Holger Podlech, Petr Volkov, M. Angelucci, F. Duval, I. Hiekkanen, W. M. Yao, Giancarlo Ferrera, C. Lorin, Y. Dydyshka, Kurt R. Peters, Gergely Gabor Barnafoldi, V. Vysotsky, V. Arı, E. Pilicer, M. Chamizo-Llatas, G. Kuhlmann, Hans Quack, R. Valizadeh, Tiina Salmi, Thomas Kramer, Adam Jeff, A. Abada, J. M. Duval, J. Abelleira Fernandez, A. Leveratto, E. Tal Hod, X. Wu, Laurent Serin, Sarah Aull, Samuele Mariotto, A. Poiron, Sabine Riemann, P. Selva, V. I. Pantsyrny, Gianluca Valentino, K. Kahle, S. Aune, K. Potamianos, Eros Cazzato, M. Giovannetti, Petr Mandrik, S. Sidorov, F. Collamati, Simone Gilardoni, S. Bertolucci, Alexander V. Zlobin, Mehmet Sahin, Marco Delmastro, G. Aydın, A. Doblhammer, Alan S. Cornell, S. J. De Jong, M. Caccia, M. Lueckhof, P. Sollander, Mauro Taborelli, J. Shelton, Frank Gerigk, Robert Rimmer, Ayres Freitas, Pierluigi Bruzzone, Brajesh K. Singh, K. Keppel, N. Alipour Tehrani, C. Prasse, Louis Rinolfi, Emma Slade, W. Flieger, Alexey Dudarev, H. J. Yang, T. Köttig, L. Mether, C. Weiland, Andrea Malagoli, Sunghoon Jung, F. Conventi, I. Tropin, G. H. A. Viehhauser, Tomas Davidek, Y. O. Günaydin, Daniel Andreas Britzger, F. Toral, James John Brooke, R. Steerenberg, G. Morello, Mauro Migliorati, Alexej Grudiev, C. Tetrel, Wolfgang Höfle, J. V. Minervini, L. García Tabarés, V. Yermolchik, Claude Guyot, D. Guadagnoli, Giorgio Vallone, N. De Filippis, Oleksii Beznosov, P. Charitos, N. Schwerg, Ahmed Hammad, P. Manil, F. Niccoli, Lydia Iconomidou-Fayard, R. Aleksan, K. Hahn, P. Meridiani, Peter Skands, Tobias Golling, Lucio Rossi, G. Gobbi, Michael Hance, A. J. Barr, V. Del Duca, V. Guzey, M. Pont, Michele Selvaggi, Oliver Brüning, J. Barreiro Guimarães da Costa, A. Drago, Y. Zhang, Giovanni Punzi, Viktor Matveev, Anadi Canepa, Clemens Lange, B. L. Militsyn, Martijn Mulders, Max Klein, V. D’Auria, M. Mylona, Valeria Braccini, S. DasBakshi, David Calvet, Sophia Borowka, David Marzocca, S. Jadach, A. A. Pankov, Christophe Ochando, A. A. Tudora, I. Masina, Jure Zupan, A. Preinerstorfer, Benjamin Fuks, H. K. Soltveit, G. Rolando, E.E. Perepelkin, T. G. Rizzo, Saleh Sultansoy, Federico Roncarolo, K. Elsener, R. Q. Pan, P. Zhuang, David Attié, Jac Perez, K. Kravalis, F. Anulli, V. Ruhlmann-Kleider, S. Malvezzi, Steffen A. Bass, E. La Francesca, Heinz Pernegger, K. Grzanka, M. T. Tiirakari, Alberto Ventura, Alessandro Cerri, Marco Peruzzi, Eric Montesinos, O. Etisken, F. Grancagnolo, S. Kartal, H. Humer, Oliver Fischer, M. Primavera, Marco Toliman Lucchini, P. Vedrine, Felix Kling, M. Altınlı, Sergio Calatroni, C. Han, Olivier Leroy, R. T. D’Agnolo, N. Klinkenberg, A. Audurier, Tatsushi Nakamoto, Ali Bozbey, Bernd A. Kniehl, Carl J. Debono, I. P. J. Shipsey, Gregorio Bernardi, Paolo Nason, William James Fawcett, J. M. Jiménez, D. Denisov, M. Serluca, David Curtin, Arif Akhundov, M. García Pérez, Iacopo Vivarelli, Emanuele Bacchiocchi, Markus Zerlauth, Julia Hrdinka, F. Butin, F. Müller, D. Tikhonov, Jorg Wenninger, A. Kilic, Fabrizio Ferro, J. Tanaka, S. A. Antipov, Miroslav Atanasov, S. Kuttimalai, A. Y. Starikov, F. R. Blánquez, S. V. Furuseth, G. Gaudio, L. Malgeri, J. Curti, B. Turbiarz, S. Li, A. Romanov, Costas G. Papadopoulos, Brennan Goddard, Frank Krauss, Lidija Zivkovic, Toms Torims, Michaela Lackner, D. A. Lyubimtsev, G. Borghello, J. F. Grosse-Oetringhaus, A. Bogomyagkov, H. Duran Yildiz, N. Foppiani, Arthur Schaffer, J. Zhou, D. Liberati, Vincenzo Guidi, Naeem A. Tahir, M. Besançon, Daniel Schoerling, Joe Incandela, Giacomo Polesello, O. Cakir, I. Ruehl, Ruggero Vaglio, Z. Zhang, Bruno Spataro, Davide Tommasini, F. Millet, H. D. Yoo, Carlo V. Fiorio, S. Deghaye, C. Bozzi, A. Shivaji, G. Corcella, I. Bellafont, Valentina Mariani, D. E. Martins, Michael Syphers, C. Hati, Peter Marquard, Nicola Bacchetta, Matthew Crouch, David Woog, Oliver Kortner, A. Milanese, Ricardo Gonçalo, Guido Montagna, Mikhail Zobov, F. Bedeschi, Eugene Bulyak, M. Aburaia, R. Tenchini, G. Marchiori, H. Rafique, G. Calderola, M. Antonello, Andrea Thamm, S. Glukhov, F. Hug, Robert Ruprecht, Veysi Erkcan Ozcan, K. Lee, Angelo Infantino, V. Makarenko, Z. Nergiz, Sergei Chekanov, Benjamin C. Allanach, C. Dachauer, H. Zhang, C. Biscari, A. J. Lankford, Scott Thomas, P. Kostka, Thomas Gehrmann, O. Azzolini, M. Ploskon, S. F. Ge, K. Oide, Andrea Bastianin, Daniela Bortoletto, Ingo Schienbein, J. L. Biarrotte, M. van Leeuwen, D. Stöckinger, Harald Ita, J. Katharina Behr, A. Cholakian, T. Kwon, L. Medina, Evgeny Starchenko, G. Mancinelli, L. Zanotto, F. Menez, L. Bellagamba, J. P. 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Béguin, Roberto Cardarelli, C. Milardi, G. Tassielli, Mario Campanelli, P. Fabbricatore, R. Rossmanith, Piergiulio Lenzi, D. P. Missiaen, R. Patterson, Sigve Haug, A. Farilla, Guilherme Milhano, D. El Khechen, Freya Blekman, O. B. Malyshev, Carlo Ferdeghini, A. Hannah, Michael Benedikt, E. Logothetis Agaliotis, M. Prausa, Maurizio Vignolo, M. Drewes, F. Marhauser, A. Ivanovs, M. Widorski, E. Santopinto, Javier Munilla, V. Mertens, Filip Moortgat, Salim Ogur, Michaela Schaumann, O. Rios Rubiras, Carsten Welsch, Fady Bishara, Michael Plagge, M. Czech, Giuseppe Iacobucci, I. Crespo Garrido, W. Dallapiazza, A. Moros, Wieslaw Placzek, A. E. Rentería-Olivo, M. Saito, H. U. Wienands, O. Verwilligen, L. Spallino, W. Snoeys, L. Duarte, A. Massimiliano, Greg Landsberg, Z. Liu, A. Ozansoy, Antonella Sciuto, T. Boccali, R. B. Appleby, M. Antonelli, J. A. Netto, Y. Nie, Johannes Gutleber, M. Skrzypek, N. Vignaroli, P. J. Clark, Emilio Bellingeri, Bennie F.L. Ward, P. Roloff, E. Perez Codina, Roman Martin, Elias Metral, B. Hegner, L. Zawiejski, Efe Yazgan, F. Couderc, G. Tonelli, G. Castorina, Patrizia Azzi, A. De Roeck, Jean-Philippe Lansberg, Riccardo Valente, A. David, F. Robert, Jeremi Niedziela, Anna Grassellino, Marie-Hélène Genest, V. Tisserand, A. Kilpinen, Y. K. Kim, A. Dominjon, Andrej Arbuzov, David Amorim, L. Kretzschmar, E. Bruna, Sergey Polozov, Vyacheslav Klyukhin, Hubert Kroha, O. Amstutz, A. Vitrano, Raymond Veness, Tilman Plehn, M. A. Mahmoud, Uşak Üniversitesi, Fen Edebiyat Fakültesi, Fizik Bölümü, FCC Collaboration (Ukupan broj autora: 1363), FCC Collaboration, Abada, A., Abbrescia, M., Abdussalam, S. S., Abdyukhanov, I., Abelleira Fernandez, J., Abramov, A., Aburaia, M., Acar, A. O., Adzic, P. R., Agrawal, P., Aguilar-Saavedra, J. A., Aguilera-Verdugo, J. J., Aiba, M., Aichinger, I., Aielli, G., Akay, A., Akhundov, A., Aksakal, H., Albacete, J. L., Albergo, S., Alekou, A., Aleksa, M., Aleksan, R., Alemany Fernandez, R. 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C., Hati, C., Haug, S., Hauptman, J., Haurylavets, V., He, H. -J., Hegglin, A., Hegner, B., Heinemann, K., Heinemeyer, S., Helsens, C., Henriques, A., Hernandez, P., Hernandez-Pinto, R. J., Hernandez-Sanchez, J., Herzig, T., Hiekkanen, I., Hillert, W., Hoehn, T., Hofer, M., Hofle, W., Holdener, F., Holleis, S., Holzer, B., Hong, D. K., Honorato, C. G., Hopkins, S. C., Hrdinka, J., Hug, F., Humann, B., Humer, H., Hurth, T., Hutton, A., Iacobucci, G., Ibarrola, N., Iconomidou-Fayard, L., Ilyina-Brunner, K., Incandela, J., Infantino, A., Ippolito, V., Ishino, M., Islam, R., Ita, H., Ivanovs, A., Iwamoto, S., Iyer, A., Izquierdo Bermudez, S., Jadach, S., Jamin, D. O., Janot, P., Jarry, P., Jeff, A., Jenny, P., Jensen, E., Jensen, M., Jiang, X., Jimenez, J. M., Jones, M. A., Jones, O. R., Jowett, J. M., Jung, S., Kaabi, W., Kado, M., Kahle, K., Kalinovskaya, L., Kalinowski, J., Kamenik, J. F., Kannike, K., Kara, S. 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C., Perez, G., Perez, F., Perez Codina, E., Perez Morales, J., Perfilov, M., Pernegger, H., Peruzzi, M., Pes, C., Peters, K., Petracca, S., Petriello, F., Pezzotti, L., Pfeiffer, S., Piccinini, F., Pieloni, T., Pierini, M., Pikhartova, H., Pikurs, G., Pilicer, E., Piminov, P., Pira, C., Pittau, R., Placzek, W., Plagge, M., Plehn, T., Pleier, M. -A., Ploskon, M., Podeur, M., Podlech, H., Podzorny, T., Poggioli, L., Poiron, A., Polesello, G., Poli Lener, M., Polini, A., Polinski, J., Polozov, S. M., Ponce, L., Pont, M., Pontecorvo, L., Portaluri, T., Potamianos, K., Prasse, C., Prausa, M., Preinerstorfer, A., Premat, E., Price, T., Primavera, M., Prino, F., Prioli, M., Proudfoot, J., Provino, A., Pugnat, T., Pukhaeva, N., Pulawski, S., Pulikowski, D., Punzi, G., Putti, M., Pyarelal, A., Quack, H., Quispe, M., Racioppi, A., Rafique, H., Raginel, V., Raidal, M., Ramirez-Uribe, N. S., Ramsey-Musolf, M. 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Zurita, J, Işık Üniversitesi, Mühendislik Fakültesi, İnşaat Mühendisliği Bölümü, Işık University, Faculty of Engineering, Department of Civil Engineering, Bayındır, Cihan, Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions, Universitat Politècnica de Catalunya. RF&MW - Grup de Recerca de sistemes, dispositius i materials de RF i microones, Abada A., Abbrescia M., AbdusSalam S.S., Abdyukhanov I., Abelleira Fernandez J., Abramov A., Aburaia M., Acar A.O., Adzic P.R., Agrawal P., Aguilar-Saavedra J.A., Aguilera-Verdugo J.J., Aiba M., Aichinger I., Aielli G., Akay A., Akhundov A., Aksakal H., Albacete J.L., Albergo S., Alekou A., Aleksa M., Aleksan R., Alemany Fernandez R.M., Alexahin Y., Alia R.G., Alioli S., Alipour Tehrani N., Allanach B.C., Allport P.P., Altinli M., Altmannshofer W., Ambrosio G., Amorim D., Amstutz O., Anderlini L., Andreazza A., Andreini M., Andriatis A., Andris C., Andronic A., Angelucci M., Antinori F., Antipov S.A., Antonelli M., Antonello M., Antonioli P., Antusch S., Anulli F., Apolinario L., Apollinari G., Apollonio A., Appelo D., Appleby R.B., Apyan A., Arbey A., Arbuzov A., Arduini G., Ari V., Arias S., Armesto N., Arnaldi R., Arsenyev S.A., Arzeo M., Asai S., Aslanides E., Assmann R.W., Astapovych D., Atanasov M., Atieh S., Attie D., Auchmann B., Audurier A., Aull S., Aumon S., Aune S., Avino F., Avrillaud G., Aydin G., Azatov A., Azuelos G., Azzi P., Azzolini O., Azzurri P., Bacchetta N., Bacchiocchi E., Bachacou H., Baek Y.W., Baglin V., Bai Y., Baird S., Baker M.J., Baldwin M.J., Ball A.H., Ballarino A., Banerjee S., Barber D.P., Barducci D., Barjhoux P., Barna D., Barnafoldi G.G., Barnes M.J., Barr A., Barranco Garcia J., Barreiro Guimaraes da Costa J., Bartmann W., Baryshevsky V., Barzi E., Bass S.A., Bastianin A., Baudouy B., Bauer F., Bauer M., Baumgartner T., Bautista-Guzman I., Bayindir C., Beaudette F., Bedeschi F., Beguin M., Bellafont I., Bellagamba L., Bellegarde N., Belli E., Bellingeri E., Bellini F., Bellomo G., Belomestnykh S., Bencivenni G., Benedikt M., Bernardi G., Bernardi J., Bernet C., Bernhardt J.M., Bernini C., Berriaud C., Bertarelli A., Bertolucci S., Besana M.I., Besancon M., Beznosov O., Bhat P., Bhat C., Biagini M.E., Biarrotte J.-L., Bibet Chevalier A., Bielert E.R., Biglietti M., Bilei G.M., Bilki B., Biscari C., Bishara F., Blanco-Garcia O.R., Blanquez F.R., Blekman F., Blondel A., Blumlein J., Boccali T., Boels R., Bogacz S.A., Bogomyagkov A., Boine-Frankenheim O., Boland M.J., Bologna S., Bolukbasi O., Bomben M., Bondarenko S., Bonvini M., Boos E., Bordini B., Bordry F., Borghello G., Borgonovi L., Borowka S., Bortoletto D., Boscherini D., Boscolo M., Boselli S., Bosley R.R., Bossu F., Botta C., Bottura L., Boughezal R., Boutin D., Bovone G., Bozovic Jelisavic I., Bozbey A., Bozzi C., Bozzini D., Braccini V., Braibant-Giacomelli S., Bramante J., Braun-Munzinger P., Briffa J.A., Britzger D., Brodsky S.J., Brooke J.J., Bruce R., Bruckman De Renstrom P., Bruna E., Bruning O., Brunner O., Brunner K., Bruzzone P., Buffat X., Bulyak E., Burkart F., Burkhardt H., Burnet J.-P., Butin F., Buttazzo D., Butterworth A., Caccia M., Cai Y., Caiffi B., Cairo V., Cakir O., Calaga R., Calatroni S., Calderini G., Calderola G., Caliskan A., Calvet D., Calviani M., Camalich J.M., Camarri P., Campanelli M., Camporesi T., Canbay A.C., Canepa A., Cantergiani E., Cantore-Cavalli D., Capeans M., Cardarelli R., Cardella U., Cardini A., Carloni Calame C.M., Carra F., Carra S., Carvalho A., Casalbuoni S., Casas J., Cascella M., Castelnovo P., Castorina G., Catalano G., Cavasinni V., Cazzato E., Cennini E., Cerri A., Cerutti F., Cervantes J., Chaikovska I., Chakrabortty J., Chala M., Chamizo-Llatas M., Chanal H., Chanal D., Chance S., Chance A., Charitos P., Charles J., Charles T.K., Chattopadhyay S., Chehab R., Chekanov S.V., Chen N., Chernoded A., Chetvertkova V., Chevalier L., Chiarelli G., Chiarello G., Chiesa M., Chiggiato P., Childers J.T., Chmielinska A., Cholakian A., Chomaz P., Chorowski M., Chou W., Chrzaszcz M., Chyhyrynets E., Cibinetto G., Ciftci A.K., Ciftci R., Cimino R., Ciuchini M., Clark P.J., Coadou Y., Cobal M., Coccaro A., Cogan J., Cogneras E., Collamati F., Colldelram C., Collier P., Collot J., Contino R., Conventi F., Cook C.T.A., Cooley L., Corcella G., Cornell A.S., Corral G.H., Correia-Rodrigues H., Costanza F., Costa Pinto P., Couderc F., Coupard J., Craig N., Crespo Garrido I., Crivellin A., Croteau J.F., Crouch M., Cruz Alaniz E., Cure B., Curti J., Curtin D., Czech M., Dachauer C., D'Agnolo R.T., Daibo M., Dainese A., Dalena B., Daljevec A., Dallapiazza W., D'Aloia Schwartzentruber L., Dam M., D'Ambrosio G., Das S.P., DasBakshi S., da Silva W., da Silveira G.G., D'Auria V., D'Auria S., David A., Davidek T., Deandrea A., de Blas J., Debono C.J., De Curtis S., De Filippis N., de Florian D., Deghaye S., de Jong S.J., Del Bo C., Del Duca V., Delikaris D., Deliot F., Dell'Acqua A., Delle Rose L., Delmastro M., De Lucia E., Demarteau M., Denegri D., Deniau L., Denisov D., Denizli H., Denner A., d'Enterria D., de Rijk G., De Roeck A., Derue F., Deschamps O., Descotes-Genon S., Dev P.S.B., de Vivie de Regie J.B., Dewanjee R.K., Di Ciaccio A., Di Cicco A., Dillon B.M., Di Micco B., Di Nezza P., Di Vita S., Doblhammer A., Dominjon A., D'Onofrio M., Dordei F., Drago A., Draper P., Drasal Z., Drewes M., Duarte L., Dubovyk I., Duda P., Dudarev A., Dudko L., Duellmann D., Dunser M., du Pree T., Durante M., Duran Yildiz H., Dutta S., Duval F., Duval J.M., Dydyshka Y., Dziewit B., Eisenhardt S., Eisterer M., Ekelof T., El Khechen D., Ellis S.A., Ellis J., Ellison J.A., Elsener K., Elsing M., Enari Y., Englert C., Eriksson H., Eskola K.J., Esposito L.S., Etisken O., Etzion E., Fabbricatore P., Falkowski A., Falou A., Faltova J., Fan J., Fano L., Farilla A., Farinelli R., Farinon S., Faroughy D.A., Fartoukh S.D., Faus-Golfe A., Fawcett W.J., Felici G., Felsberger L., Ferdeghini C., Fernandez Navarro A.M., Fernandez-Tellez A., Ferradas Troitino J., Ferrara G., Ferrari R., Ferreira L., Ferreira da Silva P., Ferrera G., Ferro F., Fiascaris M., Fiorendi S., Fiorio C., Fischer O., Fischer E., Flieger W., Florio M., Fonnesu D., Fontanesi E., Foppiani N., Foraz K., Forkel-Wirth D., Forte S., Fouaidy M., Fournier D., Fowler T., Fox J., Francavilla P., Franceschini R., Franchino S., Franco E., Freitas A., Fuks B., Furukawa K., Furuseth S.V., Gabrielli E., Gaddi A., Galanti M., Gallo E., Ganjour S., Gao J., Garcia Diaz V., Garcia Perez M., Garcia Tabares L., Garion C., Garzelli M.V., Garzia I., Gascon-Shotkin S.M., Gaudio G., Gay P., Ge S.-F., Gehrmann T., Genest M.H., Gerard R., Gerigk F., Gerwig H., Giacomelli P., Giagu S., Gianfelice-Wendt E., Gianotti F., Giffoni F., Gilardoni S.S., Gil Costa M., Giovannetti M., Giovannozzi M., Giubellino P., Giudice G.F., Giunta A., Gladilin L.K., Glukhov S., Gluza J., Gobbi G., Goddard B., Goertz F., Golling T., Goncalves V.P., Goncalo R., Gonzalez Gomez L.A., Gorgi Zadeh S., Gorine G., Gorini E., Gourlay S.A., Gouskos L., Grancagnolo F., Grassellino A., Grau A., Graverini E., Gray H.M., Greco M., Grenard J.-L., Grimm O., Grojean C., Gromov V.A., Grosse-Oetringhaus J.F., Grudiev A., Grzanka K., Gu J., Guadagnoli D., Guidi V., Guiducci S., Guillermo Canton G., Gunaydin Y.O., Gupta R., Gupta R.S., Gutierrez J., Gutleber J., Guyot C., Guzey V., Gwenlan C., Haberstroh C., Hacisahinoglu B., Haerer B., Hahn K., Hahn T., Hammad A., Han C., Hance M., Hannah A., Harris P.C., Hati C., Haug S., Hauptman J., Haurylavets V., He H.-J., Hegglin A., Hegner B., Heinemann K., Heinemeyer S., Helsens C., Henriques A., Hernandez P., Hernandez-Pinto R.J., Hernandez-Sanchez J., Herzig T., Hiekkanen I., Hillert W., Hoehn T., Hofer M., Hofle W., Holdener F., Holleis S., Holzer B., Hong D.K., Honorato C.G., Hopkins S.C., Hrdinka J., Hug F., Humann B., Humer H., Hurth T., Hutton A., Iacobucci G., Ibarrola N., Iconomidou-Fayard L., Ilyina-Brunner K., Incandela J., Infantino A., Ippolito V., Ishino M., Islam R., Ita H., Ivanovs A., Iwamoto S., Iyer A., Izquierdo Bermudez S., Jadach S., Jamin D.O., Janot P., Jarry P., Jeff A., Jenny P., Jensen E., Jensen M., Jiang X., Jimenez J.M., Jones M.A., Jones O.R., Jowett J.M., Jung S., Kaabi W., Kado M., Kahle K., Kalinovskaya L., Kalinowski J., Kamenik J.F., Kannike K., Kara S.O., Karadeniz H., Karaventzas V., Karpov I., Kartal S., Karyukhin A., Kashikhin V., Katharina Behr J., Kaya U., Keintzel J., Keinz P.A., Keppel K., Kersevan R., Kershaw K., Khanpour H., Khatibi S., Khatiri Yanehsari M., Khoze V.V., Kieseler J., Kilic A., Kilpinen A., Kim Y.-K., Kim D.W., Klein U., Klein M., Kling F., Klinkenberg N., Kloppel S., Klute M., Klyukhin V.I., Knecht M., Kniehl B., Kocak F., Koeberl C., Kolano A.M., Kollegger A., Kolodziej K., Kolomiets A.A., Komppula J., Koop I., Koppenburg P., Koratzinos M., Kordiaczynska M., Korjik M., Kortner O., Kostka P., Kotlarski W., Kotnig C., Kottig T., Kotwal A.V., Kovalenko A.D., Kowalski S., Kozaczuk J., Kozlov G.A., Kozub S.S., Krainer A.M., Kramer T., Kramer M., Krammer M., Krasnov A.A., Krauss F., Kravalis K., Kretzschmar L., Kriske R.M., Kritscher H., Krkotic P., Kroha H., Kucharczyk M., Kuday S., Kuendig A., Kuhlmann G., Kulesza A., Kumar M., Kusina A., Kuttimalai S., Kuze M., Kwon T., Lackner F., Lackner M., La Francesca E., Laine M., Lamanna G., La Mendola S., Lancon E., Landsberg G., Langacker P., Lange C., Langner A., Lankford A.J., Lansberg J.P., Lari T., Laycock P.J., Lebrun P., Lechner A., Lee K., Lee S., Lee R., Lefevre T., Le Guen P., Lehtinen T., Leith S.B., Lenzi P., Leogrande E., Leonidopoulos C., Leon-Monzon I., Lerner G., Leroy O., Lesiak T., Levai P., Leveratto A., Levichev E., Li G., Li S., Li R., Liberati D., Liepe M., Lissauer D.A., Liu Z., Lobko A., Locci E., Logothetis Agaliotis E., Lombardo M.P., Long A.J., Lorin C., Losito R., Louzguiti A., Low I., Lucchesi D., Lucchini M.T., Luciani A., Lueckhof M., Lunt A.J.G., Luzum M., Lyubimtsev D.A., Maggiora M., Magnin N., Mahmoud M.A., Mahmoudi F., Maitre J., Makarenko V., Malagoli A., Malcles J., Malgeri L., Mallon P.J., Maltoni F., Malvezzi S., Malyshev O.B., Mancinelli G., Mandrik P., Manfrinetti P., Mangano M., Manil P., Mannelli M., Marchiori G., Marhauser F., Mariani V., Marinozzi V., Mariotto S., Marquard P., Marquet C., Marriott-Dodington T., Martin R., Martin O., Martin Camalich J., Martinez T., Martinez Bruzual H., Martinez-Hernandez M.I., Martins D.E., Marzani S., Marzocca D., Marzola L., Masciocchi S., Masina I., Massimiliano A., Massironi A., Masubuchi T., Matveev V.A., Mazzoni M.A., McCullough M., McIntosh P.A., Meade P., Medina L., Meier A., Meignan J., Mele B., Mendes Saraiva J.G., Menez F., Mentink M., Meoni E., Meridiani P., Merk M., Mermod P., Mertens V., Mether L., Metral E., Migliorati M., Milanese A., Milardi C., Milhano G., Militsyn B.L., Millet F., Minashvili I., Minervini J.V., Miralles L.S., Mirarchi D., Mishima S., Missiaen D.P., Mitselmakher G., Mitshuhashi T., Mnich J., Mohammadi Najafabadi M., Mohapatra R.N., Mokhov N., Molson J.G., Monge R., Montag C., Montagna G., Monteil S., Montenero G., Montesinos E., Moortgat F., Morange N., Morello G., Moreno Llacer M., Moretti M., Moretti S., Morley A.K., Moros A., Morozov I., Morretta V., Morrone M., Mostacci A., Muanza S., Muchnoi N., Muhlegger M., Mulder M., Mulders M., Muller B., Muller F., Muller A.-S., Munilla J., Murray M.J., Muttoni Y., Myers S., Mylona M., Nachtman J., Nakamoto T., Nardecchia M., Nardini G., Nason P., Nergiz Z., Nesterenko A.V., Netto J.A., Nettstrater A., Neubuser C., Neundorf J., Niccoli F., Nicrosini O., Nie Y., Niedermayer U., Niedziela J., Niemi A., Nikitin S.A., Nisati A., No J.M., Nonis M., Nosochkov Y., Novak M., Novokhatski A., O'Callaghan J.M., Ochando C., Ogur S., Ohmi K., Oide K., Okorokov V.A., Okumura Y., Oleari C., Olness F.I., Onel Y., Ortino M., Osborne J., Osland P., Otto T., Oyulmaz K.Y., Ozansoy A., Ozcan V., Ozdemir K., Pagliarone C.E., Pais da Silva H.F., Palmieri E., Palumbo L., Pampaloni A., Pan R.-Q., Panareo M., Panella O., Panico G., Panizzo G., Pankov A.A., Pantsyrny V., Papadopoulos C.G., Papaefstathiou A., Papaphilippou Y., Parker M.A., Parma V., Pasquali M., Patra S.K., Patterson R., Paukkunen H., Pauss F., Peggs S., Penttinen J.-P., Peon G., Perepelkin E.E., Perez E., Perez J.C., Perez G., Perez F., Perez Codina E., Perez Morales J., Perfilov M., Pernegger H., Peruzzi M., Pes C., Peters K., Petracca S., Petriello F., Pezzotti L., Pfeiffer S., Piccinini F., Pieloni T., Pierini M., Pikhartova H., Pikurs G., Pilicer E., Piminov P., Pira C., Pittau R., Placzek W., Plagge M., Plehn T., Pleier M.-A., Ploskon M., Podeur M., Podlech H., Podzorny T., Poggioli L., Poiron A., Polesello G., Poli Lener M., Polini A., Polinski J., Polozov S.M., Ponce L., Pont M., Pontecorvo L., Portaluri T., Potamianos K., Prasse C., Prausa M., Preinerstorfer A., Premat E., Price T., Primavera M., Prino F., Prioli M., Proudfoot J., Provino A., Pugnat T., Pukhaeva N., Pulawski S., Pulikowski D., Punzi G., Putti M., Pyarelal A., Quack H., Quispe M., Racioppi A., Rafique H., Raginel V., Raidal M., Ramirez-Uribe N.S., Ramsey-Musolf M.J., Rata R., Ratoff P., Ravotti F., Rebello Teles P., Reboud M., Redaelli S., Renner E., Renteria-Olivo A.E., Rescigno M., Reuter J., Ribon A., Ricci A.M., Riegler W., Riemann S., Riemann B., Riemann T., Rifflet J.M., Rimmer R.A., Rinaldesi R., Rinolfi L., Rios Rubiras O., Risselada T., Rivetti A., Rivkin L., Rizzo T., Robens T., Robert F., Robson A.J., Rochepault E., Roda C., Rodrigo G., Rodriguez-Cahuantzi M., Rogan C., Roig M., Rojas-Torres S., Rojo J., Rolandi G., Rolando G., Roloff P., Romanenko A., Romanov A., Roncarolo F., Rosado Sanchez A., Rosaz G., Rossi L., Rossi A., Rossmanith R., Rousset B., Royon C., Ruan X., Ruehl I., Ruhlmann-Kleider V., Ruiz R., Rumyantsev L., Ruprecht R., Ryazanov A.I., Saba A., Sadykov R., Saez de Jauregui D., Sahin M., Sailer B., Saito M., Sala F., Salam G.P., Salfeld-Nebgen J., Salgado C.A., Salini S., Sallese J.M., Salmi T., Salzburger A., Sampayo O.A., Sanfilippo S., Santiago J., Santopinto E., Santoro R., Sanz Ull A., Sarasola X., Sarpun I.H., Sauvain M., Savelyeva S., Sawada R., Sborlini G.F.R., Schaffer A., Schaumann M., Schenk M., Scheuerlein C., Schienbein I., Schlenga K., Schmickler H., Schmidt R., Schoerling D., Schoning A., Schorner-Sadenius T., Schott M., Schulte D., Schwaller P., Schwanenberger C., Schwemling P., Schwerg N., Scibile L., Sciuto A., Scomparin E., Sebastiani C., Seeber B., Segreti M., Selva P., Selvaggi M., Senatore C., Senol A., Serin L., Serluca M., Serra N., Seryi A., Sestini L., Sfyrla A., Shaposhnikov M., Shaposhnikova E., Sharkov B.Y., Shatilov D., Shelton J., Shiltsev V., Shipsey I.P., Shirkov G.D., Shivaji A., Shwartz D., Sian T., Sidorov S., Siemko A., Silvestrini L., Simand N., Simon F., Singh B.K., Siodmok A., Sirois Y., Sirtori E., Sirvinskaite R., Sitar B., Sjostrand T., Skands P., Skordis E., Skovpen K., Skrzypek M., Slade E., Slavich P., Slovak R., Smaluk V., Smirnov V., Snoeys W., Soffi L., Sollander P., Solovyanov O., Soltveit H.K., Song H., Sopicki P., Sorbi M., Spallino L., Spannowsky M., Spataro B., Sphicas P., Spiesberger H., Spiller P., Spira M., Srivastava T., Stachel J., Stakia A., Stanyard J.L., Starchenko E., Starikov A.Y., Stasto A.M., Statera M., Steerenberg R., Steggemann J., Stenvall A., Stivanello F., Stockinger D., Stoel L.S., Stoger-Pollach M., Strauss B., Stuart M., Stupakov G., Su S., Sublet A., Sugita K., Sulak L., Sullivan M.K., Sultansoy S., Sumida T., Suzuki K., Sylva G., Syphers M.J., Sznajder A., Taborelli M., Tahir N.A., Takeuchi M., Tal Hod E., Tambasco C., Tanaka J., Tang K., Tapan I., Taroni S., Tartarelli G.F., Tassielli G., Tavian L., Taylor T.M., Taylor G.N., Teixeira A.M., Tejeda-Munoz G., Telnov V.I., Tenchini R., ten Kate H.H.J., Terashi K., Tesi A., Testa M., Tetrel C., Teytelman D., Thaler J., Thamm A., Thomas S., Tiirakari M.T., Tikhomirov V., Tikhonov D., Timko H., Tisserand V., Tkachenko L.M., Tkaczuk J., Tock J.P., Todd B., Todesco E., Tomas Garcia R., Tommasini D., Tonelli G., Toral F., Torims T., Torre R., Townsend Z., Trant R., Treille D., Trentadue L., Tricoli A., Tricomi A., Trischuk W., Tropin I.S., Tuchming B., Tudora A.A., Turbiarz B., Turk Cakir I., Turri M., Tydecks T., Usovitsch J., Uythoven J., Vaglio R., Valassi A., Valchkova F., Valdivia Garcia M.A., Valente P., Valente R.U., Valente-Feliciano A.-M., Valentino G., Vale Silva L., Valet J.M., Valizadeh R., Valle J.W.F., Vallecorsa S., Vallone G., van Leeuwen M., van Rienen U.H., van Riesen-Haupt L., Varasteh M., Vecchi L., Vedrine P., Velev G., Veness R., Ventura A., Venturini Delsolaro W., Verducci M., Verhaaren C.B., Vernieri C., Verweij A.P., Verwilligen O., Viazlo O., Vicini A., Viehhauser G., Vignaroli N., Vignolo M., Vitrano A., Vivarelli I., Vlachos S., Vogel M., Vogt D.M., Volkl V., Volkov P., Volpini G., von Ahnen J., Vorotnikov G., Voutsinas G.G., Vysotsky V., Wagner U., Wallny R., Wang L.-T., Wang R., Wang K., Ward B.F.L., Watson T.P., Watson N.K., Ws Z., Weiland C., Weinzierl S., Welsch C.P., Wenninger J., Widorski M., Wiedemann U.A., Wienands H.-U., Wilkinson G., Williams P.H., Winter A., Wohlfahrt A., Wojton T., Wollmann D., Womersley J., Woog D., Wu X., Wulzer A., Yanehsari M.K., Yang G., Yang H.J., Yao W.-M., Yazgan E., Yermolchik V., Yilmaz A., Yoo H.-D., Yost S.A., You T., Young C., Yu T.-T., Yu F., Zaborowska A., Zadeh S.G., Zahnd M., Zanetti M., Zanotto L., Zawiejski L., Zeiler P., Zerlauth M., Zernov S.M., Zevi Dell Porta G., Zhang Z., Zhang Y., Zhang C., Zhang H., Zhao Z., Zhong Y.-M., Zhou J., Zhou D., Zhuang P., Zick G., Zimmermann F., Zinn-Justin J., Zivkovic L., Zlobin A.V., Zobov M., Zupan J., Zurita J., BAİBÜ, Fen Edebiyat Fakültesi, Fizik Bölümü, Denizli, Haluk, TOBB ETU, Faculty of Engineering, Department of Electrical & Electronics Engineering, TOBB ETU, Faculty of Engineering, Department of Material Science & Nanotechnology Engineering, TOBB ETÜ, Mühendislik Fakültesi, Elektrik ve Elektronik Mühendisliği Bölümü, TOBB ETÜ, Mühendislik Fakültesi, Malzeme Bilimi ve Nanoteknoloji Mühendisliği Bölümü, Bozbey, Ali, Sultansoy, Saleh, Özdemir, Kadri, Giresun Üniversitesi, UCL - SST/IRMP - Institut de recherche en mathématique et physique, and Ege Üniversitesi

Subjects
Beam losses, IMPACT, Physics::Instrumentation and Detectors, Physics beyond the Standard Model, EVENT BUILDER, hadron collider, General Physics and Astronomy, Mathematics and natural science: 400::Physics: 430::Nuclear and elementary particle physics: 431 [VDP], 01 natural sciences, 7. Clean energy, law.invention, Subatomär fysik, chemistry.chemical_compound, Conceptual design, Colliding beam accelerators, law, HE-LHC, Subatomic Physics, General Materials Science, Hadron colliders, Física::Física de partícules::Hadrons [Àrees temàtiques de la UPC], Large Hadron Collider, Acceleradors de partícules, Physics, Settore FIS/01 - Fisica Sperimentale, Beams (radiation), Settore FIS/02 - Fisica Teorica, Modelli e Metodi Matematici, Upgrade, Impact, collimators, partikkelfysikk, Future Circular Collider, High-Energy, Systems engineering, HE-LHC: The High-Energy Large Hadron Collider, Col·lisionadors d'hadrons, Applied physics, Collimators, Socio-culturale, Fizik, Hadrons, Accelerator Physics and Instrumentation, HE-LHC physics, Condensed Matter::Materials Science, 0103 physical sciences, Physics::Atomic and Molecular Clusters, beam losses, ddc:530, High Energy Physics, partikkelakselerator, Physical and Theoretical Chemistry, Niobium-tin, 010306 general physics, Collider, Particle Physics, Beams (radiation) | Collimators | Beam losses, Energies::Energia nuclear [Àrees temàtiques de la UPC], Large Hadron Collider HE-LHC, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Colliders (Nuclear physics), Acceleratorfysik och instrumentering, Event builder, Accelerators and Storage Rings, Particle accelerators, chemistry, Experimental High Energy Physics, Physics::Accelerator Physics, High Energy Physics::Experiment, Future Colliders
Abstract

Authors: A. AbadaM. AbbresciaS. S. AbdusSalamI. AbdyukhanovJ. Abelleira FernandezA. AbramovM. AburaiaA. O. AcarP. R. AdzicP. AgrawalJ. A. Aguilar-SaavedraJ. J. Aguilera-VerdugoM. AibaI. AichingerG. AielliA. AkayA. AkhundovH. AksakalJ. L. AlbaceteS. AlbergoA. AlekouM. AleksaR. AleksanR. M. Alemany FernandezY. AlexahinR. G. AlíaS. AlioliN. Alipour TehraniB. C. AllanachP. P. AllportM. AltınlıW. AltmannshoferG. AmbrosioD. AmorimO. AmstutzL. AnderliniA. AndreazzaM. AndreiniA. AndriatisC. AndrisA. AndronicM. AngelucciF. AntinoriS. A. AntipovM. AntonelliM. AntonelloP. AntonioliS. AntuschF. AnulliL. ApolinárioG. ApollinariA. ApollonioD. AppelöR. B. ApplebyA. ApyanA. ApyanA. ArbeyA. ArbuzovG. ArduiniV. ArıS. AriasN. ArmestoR. ArnaldiS. A. ArsenyevM. ArzeoS. AsaiE. AslanidesR. W. AßmannD. AstapovychM. AtanasovS. AtiehD. AttiéB. AuchmannA. AudurierS. AullS. AumonS. AuneF. AvinoG. AvrillaudG. AydınA. AzatovG. AzuelosP. AzziO. AzzoliniP. AzzurriN. BacchettaE. BacchiocchiH. BachacouY. W. BaekV. BaglinY. BaiS. BairdM. J. BakerM. J. BaldwinA. H. BallA. BallarinoS. BanerjeeD. P. BarberD. BarducciP. BarjhouxD. BarnaG. G. BarnaföldiM. J. BarnesA. BarrJ. Barranco GarcíaJ. Barreiro Guimarães da CostaW. BartmannV. BaryshevskyE. BarziS. A. BassA. BastianinB. BaudouyF. BauerM. BauerT. BaumgartnerI. Bautista-GuzmánC. BayındırF. BeaudetteF. BedeschiM. BéguinI. BellafontL. BellagambaN. BellegardeE. BelliE. BellingeriF. BelliniG. BellomoS. BelomestnykhG. BencivenniM. BenediktG. BernardiJ. BernardiC. BernetJ. M. BernhardtC. BerniniC. BerriaudA. BertarelliS. BertolucciM. I. BesanaM. BesançonO. BeznosovP. BhatC. BhatM. E. BiaginiJ. -L. BiarrotteA. Bibet ChevalierE. R. BielertM. BigliettiG. M. BileiB. BilkiC. BiscariF. BisharaO. R. Blanco-GarcíaF. R. BlánquezF. BlekmanA. BlondelJ. BlümleinT. BoccaliR. BoelsS. A. BogaczA. BogomyagkovO. Boine-FrankenheimM. J. BolandS. BolognaO. BolukbasiM. BombenS. BondarenkoM. BonviniE. BoosB. BordiniF. BordryG. BorghelloL. BorgonoviS. BorowkaD. BortolettoD. 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GuiducciG. Guillermo CantonY. O. GünaydinR. GuptaR. S. GuptaJ. GutierrezJ. GutleberC. GuyotV. GuzeyC. GwenlanC. HaberstrohB. HacışahinoğluB. HaererK. HahnT. HahnA. HammadC. HanM. HanceA. HannahP. C. HarrisC. HatiS. HaugJ. HauptmanV. HaurylavetsH. -J. HeA. HegglinB. HegnerK. HeinemannS. HeinemeyerC. HelsensA. HenriquesA. HenriquesP. HernandezR. J. Hernández-PintoJ. Hernandez-SanchezT. HerzigI. HiekkanenW. HillertT. HoehnM. HoferW. HöfleF. HoldenerS. HolleisB. HolzerD. K. HongC. G. HonoratoS. C. HopkinsJ. HrdinkaF. HugB. HumannH. HumerT. HurthA. HuttonG. IacobucciN. IbarrolaL. Iconomidou-FayardK. Ilyina-BrunnerJ. IncandelaA. InfantinoV. IppolitoM. IshinoR. IslamH. ItaA. IvanovsS. IwamotoA. IyerS. Izquierdo BermudezS. JadachD. O. JaminP. JanotP. JarryA. JeffP. JennyE. JensenM. JensenX. JiangJ. M. JiménezM. A. JonesO. R. JonesJ. M. JowettS. JungW. KaabiM. KadoK. KahleL. KalinovskayaJ. KalinowskiJ. F. KamenikK. KannikeS. O. KaraH. KaradenizV. KaraventzasI. KarpovS. KartalA. KaryukhinV. KashikhinJ. Katharina BehrU. KayaJ. KeintzelP. A. KeinzK. KeppelR. KersevanK. KershawH. KhanpourS. KhatibiM. Khatiri YanehsariV. V. KhozeJ. KieselerA. KilicA. KilpinenY. -K. KimD. W. KimU. KleinM. KleinF. KlingN. KlinkenbergS. KlöppelM. KluteV. I. KlyukhinM. KnechtB. KniehlF. KocakC. KoeberlA. M. KolanoA. KolleggerK. KołodziejA. A. KolomietsJ. KomppulaI. KoopP. KoppenburgM. KoratzinosM. KordiaczyńskaM. KorjikO. KortnerP. KostkaW. KotlarskiC. KotnigT. KöttigA. V. KotwalA. D. KovalenkoS. KowalskiJ. KozaczukG. A. KozlovS. S. KozubA. M. KrainerT. KramerM. KrämerM. KrammerA. A. KrasnovF. KraussK. KravalisL. KretzschmarR. M. KriskeH. KritscherP. KrkoticH. KrohaM. KucharczykS. KudayA. KuendigG. KuhlmannA. KuleszaM. KumarM. KumarA. KusinaS. KuttimalaiM. KuzeT. KwonF. LacknerM. LacknerE. La FrancescaM. LaineG. LamannaS. La MendolaE. LançonG. LandsbergP. LangackerC. LangeA. LangnerA. J. LankfordJ. P. LansbergT. LariP. J. LaycockP. LebrunA. LechnerK. LeeS. LeeR. LeeT. LefevreP. Le GuenT. LehtinenS. B. LeithP. LenziE. LeograndeC. LeonidopoulosI. Leon-MonzonG. LernerO. LeroyT. LesiakP. LévaiA. LeverattoE. LevichevG. LiS. LiR. LiD. LiberatiM. LiepeD. A. LissauerZ. LiuA. LobkoE. LocciE. Logothetis AgaliotisM. P. LombardoA. J. LongC. LorinR. LositoA. LouzguitiI. LowD. LucchesiM. T. LucchiniA. LucianiM. LueckhofA. J. G. LuntM. LuzumD. A. LyubimtsevM. MaggioraN. MagninM. A. MahmoudF. MahmoudiJ. MaitreV. MakarenkoA. MalagoliJ. MalclésL. MalgeriP. J. MallonF. MaltoniS. MalvezziO. B. MalyshevG. MancinelliP. MandrikP. ManfrinettiM. ManganoP. ManilM. MannelliG. MarchioriF. MarhauserV. MarianiV. MarinozziS. MariottoP. MarquardC. MarquetT. Marriott-DodingtonR. MartinO. MartinJ. Martin CamalichT. MartinezH. Martinez BruzualM. I. Martínez-HernándezD. E. MartinsS. MarzaniD. MarzoccaL. MarzolaS. MasciocchiI. MasinaA. MassimilianoA. MassironiT. MasubuchiV. A. MatveevM. A. MazzoniM. McCulloughP. A. McIntoshP. MeadeL. MedinaA. MeierJ. MeignanB. MeleJ. G. Mendes SaraivaF. MenezM. MentinkE. MeoniP. MeridianiM. MerkP. MermodV. MertensL. MetherE. MétralM. MiglioratiA. MilaneseC. MilardiG. MilhanoB. L. MilitsynF. MilletI. MinashviliJ. V. MinerviniL. S. MirallesD. MirarchiS. MishimaD. P. MissiaenG. MitselmakherT. MitshuhashiJ. MnichM. Mohammadi NajafabadiR. N. MohapatraN. MokhovJ. G. MolsonR. MongeC. MontagG. MontagnaS. MonteilG. MonteneroE. MontesinosF. MoortgatN. MorangeG. MorelloM. Moreno LlácerM. MorettiS. MorettiA. K. MorleyA. MorosI. MorozovV. MorrettaM. MorroneA. MostacciS. MuanzaN. MuchnoiM. MühleggerM. MulderM. MuldersB. MüllerF. MüllerA. -S. MüllerJ. MunillaM. J. MurrayY. MuttoniS. MyersM. MylonaJ. NachtmanT. NakamotoM. NardecchiaG. NardiniP. NasonZ. NergizA. V. NesterenkoJ. A. NettoA. NettsträterC. NeubüserJ. NeundorfF. NiccoliO. NicrosiniY. NieU. NiedermayerJ. NiedzielaA. NiemiS. A. NikitinA. NisatiJ. M. NoM. NonisY. NosochkovM. NovákA. NovokhatskiJ. M. O’CallaghanC. OchandoS. OgurK. OhmiK. OideV. A. OkorokovY. OkumuraC. OleariF. I. OlnessY. OnelM. OrtinoJ. OsborneP. OslandT. OttoK. Y. OyulmazA. OzansoyV. ÖzcanK. ÖzdemirC. E. PagliaroneH. F. Pais da SilvaE. PalmieriL. PalumboA. PampaloniR. -Q. PanM. PanareoO. PanellaG. PanicoG. PanizzoA. A. PankovV. PantsyrnyC. G. PapadopoulosA. PapaefstathiouY. PapaphilippouM. A. ParkerV. ParmaM. PasqualiS. K. PatraR. PattersonH. PaukkunenF. PaussS. PeggsJ. -P. PenttinenG. PeónE. E. PerepelkinE. PerezJ. C. PerezG. PerezF. PérezE. Perez CodinaJ. Perez MoralesM. PerfilovH. PerneggerM. PeruzziC. PesK. PetersS. PetraccaF. PetrielloL. PezzottiS. PfeifferF. PiccininiT. PieloniM. PieriniH. PikhartovaG. PikursE. PilicerP. PiminovC. PiraR. PittauW. PłaczekM. PlaggeT. PlehnM. -A. PleierM. PłoskońM. PodeurH. PodlechT. PodzornyL. PoggioliA. PoironG. PoleselloM. Poli LenerA. PoliniJ. PolinskiS. M. PolozovL. PonceM. PontL. PontecorvoT. PortaluriK. PotamianosC. PrasseM. PrausaA. PreinerstorferE. PrematT. PriceM. PrimaveraF. PrinoM. PrioliJ. ProudfootA. ProvinoT. PugnatN. PukhaevaS. PuławskiD. PulikowskiG. PunziM. PuttiA. PyarelalH. QuackM. QuispeA. RacioppiH. RafiqueV. RaginelM. RaidalN. S. Ramírez-UribeM. J. Ramsey-MusolfR. RataP. RatoffF. RavottiP. Rebello TelesM. ReboudS. RedaelliE. RennerA. E. Rentería-OlivoM. RescignoJ. ReuterA. RibonA. M. RicciW. RieglerS. RiemannB. RiemannT. RiemannJ. M. RiffletR. A. RimmerR. RinaldesiL. RinolfiO. Rios RubirasT. RisseladaA. RivettiL. RivkinT. RizzoT. RobensF. RobertA. J. RobsonE. RochepaultC. RodaG. RodrigoM. Rodríguez-CahuantziC. RoganM. RoigS. Rojas-TorresJ. RojoG. RolandiG. RolandoP. RoloffA. RomanenkoA. RomanovF. RoncaroloA. Rosado SanchezG. RosazL. RossiA. RossiR. RossmanithB. RoussetC. RoyonX. RuanI. RuehlV. Ruhlmann-KleiderR. RuizL. RumyantsevR. RuprechtA. I. RyazanovA. SabaR. SadykovD. Saez de JaureguiM. SahinB. SailerM. SaitoF. SalaG. P. SalamJ. Salfeld-NebgenC. A. SalgadoS. SaliniJ. M. SalleseT. SalmiA. SalzburgerO. A. SampayoS. SanfilippoJ. SantiagoE. SantopintoR. SantoroA. Sanz UllX. SarasolaI. H. SarpünM. SauvainS. SavelyevaR. SawadaG. F. R. SborliniA. SchafferM. SchaumannM. SchenkC. ScheuerleinI. SchienbeinK. SchlengaH. SchmicklerR. SchmidtD. SchoerlingA. SchoningT. Schörner-SadeniusM. SchottD. SchulteP. SchwallerC. SchwanenbergerP. SchwemlingN. SchwergL. ScibileA. SciutoE. ScomparinC. SebastianiB. SeeberM. SegretiP. SelvaM. SelvaggiC. SenatoreA. SenolL. SerinM. SerlucaN. SerraA. SeryiL. SestiniA. SfyrlaM. ShaposhnikovE. ShaposhnikovaB. Y. SharkovD. ShatilovJ. SheltonV. ShiltsevI. P. ShipseyG. D. ShirkovA. ShivajiD. ShwartzT. SianS. SidorovA. SiemkoL. SilvestriniN. SimandF. SimonB. K. SinghA. SiódmokY. SiroisE. SirtoriR. SirvinskaiteB. SitarT. SjöstrandP. SkandsE. SkordisK. SkovpenM. SkrzypekE. SladeP. SlavichR. SlovakV. SmalukV. SmirnovW. SnoeysL. SoffiP. SollanderO. SolovyanovH. K. SoltveitH. SongP. SopickiM. SorbiL. SpallinoM. SpannowskyB. SpataroP. SphicasH. SpiesbergerP. SpillerM. SpiraT. SrivastavaJ. StachelA. StakiaJ. L. StanyardE. StarchenkoA. Y. StarikovA. M. StaśtoM. StateraR. SteerenbergJ. SteggemannA. StenvallF. StivanelloD. StöckingerL. S. StoelM. Stöger-PollachB. StraussM. StuartG. StupakovS. SuA. SubletK. SugitaL. SulakM. K. SullivanS. SultansoyT. SumidaK. SuzukiG. SylvaM. J. SyphersA. SznajderM. TaborelliN. A. TahirM. TakeuchiE. Tal HodC. TambascoJ. TanakaK. TangI. TapanS. TaroniG. F. TartarelliG. TassielliL. TavianT. M. TaylorG. N. TaylorA. M. TeixeiraG. Tejeda-MuñozV. I. TelnovR. TenchiniH. H. J. ten KateK. TerashiA. TesiM. TestaC. TetrelD. TeytelmanJ. ThalerA. ThammS. ThomasM. T. TiirakariV. TikhomirovD. TikhonovH. TimkoV. TisserandL. M. TkachenkoJ. TkaczukJ. P. TockB. ToddE. TodescoR. Tomás GarciaD. TommasiniG. TonelliF. ToralT. TorimsR. TorreZ. TownsendR. TrantD. TreilleL. TrentadueA. TricoliA. TricomiW. TrischukI. S. TropinB. TuchmingA. A. TudoraB. TurbiarzI. Turk CakirM. TurriT. TydecksJ. UsovitschJ. UythovenR. VaglioA. ValassiF. ValchkovaM. A. Valdivia GarciaP. ValenteR. U. ValenteA. -M. Valente-FelicianoG. ValentinoL. Vale SilvaJ. M. ValetR. ValizadehJ. W. F. ValleS. VallecorsaG. ValloneM. van LeeuwenU. H. van RienenL. van Riesen-HauptM. VarastehL. VecchiP. VedrineG. VelevR. VenessA. VenturaW. Venturini DelsolaroM. VerducciC. B. VerhaarenC. VernieriA. P. VerweijO. VerwilligenO. ViazloA. ViciniG. ViehhauserN. VignaroliM. VignoloA. VitranoI. VivarelliS. VlachosM. VogelD. M. VogtV. VölklP. VolkovG. VolpiniJ. von AhnenG. VorotnikovG. G. VoutsinasV. VysotskyU. WagnerR. WallnyL. -T. WangR. WangK. WangB. F. L. WardT. P. WatsonN. K. WatsonZ. WsC. WeilandS. WeinzierlC. P. WelschJ. WenningerM. WidorskiU. A. WiedemannH. -U. WienandsG. WilkinsonP. H. WilliamsA. WinterA. WohlfahrtT. WojtońD. WollmannJ. WomersleyD. WoogX. WuA. WulzerM. K. YanehsariG. YangH. J. YangW. -M. YaoE. YazganV. YermolchikA. YilmazA. YilmazH. -D. YooS. A. YostT. YouC. YoungT. -T. YuF. YuA. ZaborowskaS. G. ZadehM. ZahndM. ZanettiL. ZanottoL. ZawiejskiP. ZeilerM. ZerlauthS. M. ZernovG. Zevi Dell PortaZ. ZhangY. ZhangC. ZhangH. ZhangZ. ZhaoY. -M. ZhongJ. ZhouD. ZhouP. ZhuangG. ZickF. ZimmermannEmail authorJ. Zinn-JustinL. ZivkovicA. V. ZlobinM. ZobovJ. ZupanJ. Zuritathe FCC Collaboration, In response to the 2013 Update of the European Strategy for Particle Physics (EPPSU), the Future Circular Collider (FCC) study was launched as a world-wide international collaboration hosted by CERN. The FCC study covered an energy-frontier hadron collider (FCC-hh), a highest-luminosity high-energy lepton collider (FCC-ee), the corresponding 100km tunnel infrastructure, as well as the physics opportunities of these two colliders, and a high-energy LHC, based on FCC-hh technology. This document constitutes the fourth volume of the FCC Conceptual Design Report, devoted to the High-Energy Large Hadron Collider HE-LHC. It summarizes the HE-LHC physics discovery opportunities, presents the HE-LHC accelerator design, performance reach, and operation plan, discusses the underlying technologies, the civil engineering and technical infrastructure, and also sketches a possible implementation. Combining ingredients from the Large Hadron Collider (LHC), the high-luminosity LHC upgrade and adding novel technologies and approaches, the HE-LHC design aims at a hadron collider with about twice the centre-of-mass collision energy that the LHC can reach. Its performance aims at exploring physics beyond the Standard Model, signi cantly extending the LHC's direct and indirect sensitivity to new physics and discoveries.

Published
2020
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19. Training Performance With Increased Coil Prestress of the 2 m Model Magnet of Beam Separation Dipole for the HL-LHC Upgrade

Author

Ryutaro Okada, Nobuhiro Kimura, Naoki Okada, Hiroshi Kawamata, Kazuhide Tanaka, Kento Suzuki, M. Iida, Ezio Todesco, Naoya Takahashi, Y. Ikemoto, Michinaka Sugano, Tatsushi Nakamoto, Shun Enomoto, Andrea Musso, Norio Higashi, K. Sasaki, Toru Ogitsu, and Hirokatsu Ohata

Subjects
010302 applied physics, Physics, Beam diameter, Large Hadron Collider, Nuclear engineering, Magnetic separation, Superconducting magnet, Condensed Matter Physics, 01 natural sciences, Electronic, Optical and Magnetic Materials, Dipole, Nuclear magnetic resonance, Electromagnetic coil, Dipole magnet, Magnet, 0103 physical sciences, Electrical and Electronic Engineering, 010306 general physics
Abstract

A large aperture beam separation dipole (D1 magnet) is required to generate a field integral of 35 Tm at 12 kA and 1.9 K for the high luminosity upgrade of the large hadron collider (HL-LHC). High-energy accelerator Research Organization (KEK) fabricated the first 2 m model (MBXFS1) and a magnet test was performed in 2015–2016. Although the quench current reached the nominal operating current, training performance was not satisfactory. The measured azimuthal coil pre-stress was completely released below the nominal current, and this was suggested to be the main reason for the insufficient training performance. After the magnet test, MBXFS1 was disassembled and reassembled as MBXFS1b after increasing the coil pre-stress. In this paper, we report the reassembly of the magnet and test results focusing on the training performance.

Published
2018
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20. Quench Protection Heater Study With the 2-m Model Magnet of Beam Separation Dipole for the HL-LHC Upgrade

Author

Toru Ogitsu, Ryutaro Okada, Hiroshi Kawamata, Kento Suzuki, Shun Enomoto, Andrea Musso, Tatsushi Nakamoto, Hirokatsu Ohata, Ezio Todesco, Norio Higashi, Nobuhiro Kimura, M. Iida, Naoki Okada, Michinaka Sugano, and Y. Ikemoto

Subjects
010302 applied physics, Materials science, Large Hadron Collider, Nuclear engineering, Magnetic separation, Superconducting magnet, Condensed Matter Physics, 01 natural sciences, Computer Science::Other, Electronic, Optical and Magnetic Materials, Upgrade, Nuclear magnetic resonance, Dipole magnet, Magnet, 0103 physical sciences, Electrical and Electronic Engineering, 010306 general physics, Beam (structure), Electronic circuit
Abstract

The beam separation dipole magnet (D1), which is being operated in the large hadron collider (LHC), has to be replaced in accordance with upgrade to the high-luminosity LHC. The new D1 will be equipped with several circuits of heaters by which most of the stored energy is dissipated in the whole of the magnet during its quench, thereby avoiding localization of hot spots. Prior to construction of the production magnet, the 2-m mechanical short model is fabricated, and performance of this quench protection heater is evaluated through a series of the cold tests. As a result, we confirm that the maximum hot spot temperature obtained in the measurement reaches the practical limit of 300 K, and determine to design a new heater circuit. In this paper, we report the heater studies together with the prospect for future design of the quench protection heater.

Published
2018
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21. Study of Irradiation Effects on Thermal Characteristics for COMET Pion Capture Solenoid

Author

Ken-ichi Sasaki, Tatsushi Nakamoto, Nobuhiro Shigyo, Ye Yang, Masami Iio, Toru Ogitsu, and Makoto Yoshida

Subjects
Physics, Continuous operation, Solenoid, Particle accelerator, 02 engineering and technology, Superconducting magnet, 021001 nanoscience & nanotechnology, Condensed Matter Physics, 01 natural sciences, Electronic, Optical and Magnetic Materials, law.invention, Nuclear physics, Electromagnetic coil, law, Magnet, 0103 physical sciences, Electromagnetic shielding, Irradiation, Electrical and Electronic Engineering, 010306 general physics, 0210 nano-technology
Abstract

A superconducting magnet system for the COMET experiment is now under construction in the Japan Proton Accelerator Research Complex to achieve the most intense negatively charged muon beam in the world. The main part of superconducting magnet system, the Pion Capture Solenoid, will be exposed to the severe irradiation from the production target inside magnets; consequently, superconducting coils will be heated by interactions with the secondary particle. The degradation on thermal conductivity is also expected in these conduction-cooled superconducting coils as the radiation damage can be accumulated in a continuous operation at cryogenic temperature. To investigate the irradiation influence on thermal characteristics of the magnet, a thermal analysis is performed by modeling the three-dimensional structure of the coil with the consideration of irradiation effects. Possible temperature rise in coils with a beam operation is predicted in terms of stability for a continuous operation. In addition, the impact of irradiation effects on the quench protection is discussed in this paper.

Published
2018
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22. Influence of 3-D Effects on Field Quality in the Straight Part of Accelerator Magnets for the High-Luminosity Large Hadron Collider

Author

Ezio Todesco, Tatsushi Nakamoto, Frederic Savary, E. Nilsson, Pasquale Fabbricatore, Susana Izquierdo Bermudez, Shun Enomoto, Stefania Farinon, and Michinaka Sugano

Subjects
010302 applied physics, Physics, Large Hadron Collider, High Luminosity Large Hadron Collider, Superconducting magnet, Condensed Matter Physics, Accelerators and Storage Rings, 01 natural sciences, Electronic, Optical and Magnetic Materials, Magnetic field, Computational physics, Dipole, Electromagnetic coil, Magnet, 0103 physical sciences, Electrical and Electronic Engineering, 010306 general physics, Saturation (magnetic)
Abstract

A dedicated D1 beam separation dipole is currently being developed at KEK for the large hadron collider luminosity upgrade (HL-LHC). Four 150-mm aperture, 5.6-T magnetic field, and 6.7-m-long Nb–Ti magnets will replace resistive D1 dipoles. The development includes fabrication and testing of 2.2-m model magnets. The dipole has a single-layer coil and thin spacers between coil and iron, giving a nonnegligible impact of saturation on field quality at nominal field. The magnetic design of the straight section coil cross section is based on two-dimensional (2-D) optimization and a separate optimization concerns the coil ends. However, magnetic measurements of the short model showed a large difference (tens of units) between the sextupole harmonic in the straight part and the 2-D calculation. This difference is correctly modeled only by a 3-D analysis: 3-D calculations show that the magnetic field quality in the straight part is influenced by the coil ends, even for the 6.7-m-long magnets. The effect is even more remarkable in the short model. We investigate similar 3-D effects for other magnets, namely the 11-T dipole for HL-LHC. We also consider the case of the 4.5-T recombination magnets for HL-LHC (D2), where the larger space between coil and iron makes this effect less important, but still visible. We conclude the paper by outlining the different classes of accelerator magnets, where this coupling between 3-D effects and iron saturation can be relevant.

Published
2018
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23. Field Measurement to Evaluate Iron Saturation and Coil End Effects in a Modified Model Magnet of Beam Separation Dipole for the HL-LHC Upgrade

Author

Ezio Todesco, Y. Ikemoto, Norio Higashi, Hirokatsu Ohhata, Shun Enomoto, Hiroshi Kawamata, Naoto Takahashi, Toru Ogitsu, Ken-ichi Sasaki, Nobuhiro Kimura, M. Iida, Andrea Musso, Kenichi Tanaka, Kento Suzuki, Naoki Okada, Michinaka Sugano, Ryutaro Okada, and Tatsushi Nakamoto

Subjects
010302 applied physics, Materials science, High Luminosity Large Hadron Collider, Magnetic separation, Superconducting magnet, Condensed Matter Physics, 01 natural sciences, Electronic, Optical and Magnetic Materials, Computational physics, Dipole, Electromagnetic coil, Dipole magnet, Magnet, 0103 physical sciences, Electrical and Electronic Engineering, 010306 general physics, Excitation
Abstract

A beam separation dipole magnet for the high luminosity large hadron collider upgrade is developed. The development of the 2-m-long model magnet (MBXFS1) was initiated so as to evaluate the design and performance of the beam separation dipole magnet. In the first cold test in 2016, the quench performance was not satisfactory because the coil prestress at the pole was completely released during excitation. After reassembly to improve the quench performance, the excitation test of the modified model magnet (MBXFS1b) was performed at 1.9 K in 2017 at KEK. Due to the large coil aperture and limited outer diameter of the iron yoke, the control of iron saturation effects on the field quality has been a design issue. Regarding the magnetic performance, field saturation effects on the transfer function and the multipole field variation along the excitation, and coil end effects to the straight section need to be evaluated by the field measurement. In this paper, field measurement results will be presented and the comparison with the three-dimensional field calculation will be discussed.

Published
2018
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24. Preface

Author

Akihiro, KIKUCHI, primary and Tatsushi, NAKAMOTO, additional

Published
2021
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25. Mechanical Analysis of Pion Capture Superconducting Solenoid System for COMET Experiment at J-PARC

Author

Akio Terashima, Taekyung Ki, Toru Ogitsu, Ye Yang, Ken-ichi Sasaki, Hiroshi Kawamata, Makoto Yoshida, Satoshi Mihara, Masami Iio, Yasuhiro Makida, Tatsushi Nakamoto, Takahiro Okamura, and Michinaka Sugano

Subjects
Physics, Physics::Instrumentation and Detectors, Solenoid, Superconducting magnetic energy storage, Condensed Matter Physics, 01 natural sciences, 010305 fluids & plasmas, Electronic, Optical and Magnetic Materials, Magnetic field, Nuclear physics, Pion, Beamline, Electromagnetic coil, Magnet, 0103 physical sciences, Physics::Accelerator Physics, J-PARC, Electrical and Electronic Engineering, 010306 general physics
Abstract

KEK is currently constructing a long series of superconducting solenoid beamline for the COMET Phase-I experiment at the Hadron facility of J-PARC. The magnet system consists of a 5-T pion capture solenoid, a curved muon transport solenoid, and a large bore detector solenoid. The pion capture solenoid system consists of a large cold mass including four coils with an inner diameter of 1340 mm and a small cold mass including six small coils with an inner diameter of 500 mm. The peak magnetic field on the conductor reaches to 5.4 T at an operation current of 2700 A. This paper presents the design and structural details of a magnet, radiation-resistant coil, cold mass and vacuum vessel, apart from the results of the electromagnetic analysis in two-dimensional (2-D) and 3-D.

Published
2017
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26. Fabrication and Test Results of the First 2 m Model Magnet of Beam Separation Dipole for the HL-LHC Upgrade

Author

Shun Enomoto, Naoto Takahashi, Nobuhiro Kimura, Sigekatu Sugawara, Ken-ichi Sasaki, M. Iida, Ezio Todesco, Hirokatsu Ohata, Naoki Okada, Toru Ogitsu, Norio Higashi, Michinaka Sugano, Kenichi Tanaka, Andrea Musso, Hiroshi Kawamata, Ryutaro Okada, and Tatsushi Nakamoto

Subjects
Physics, Cryostat, Beam diameter, Large Hadron Collider, Physics::Instrumentation and Detectors, Aperture, Nuclear engineering, Niobium-titanium, Condensed Matter Physics, 01 natural sciences, 010305 fluids & plasmas, Electronic, Optical and Magnetic Materials, Nuclear magnetic resonance, Electromagnetic coil, Dipole magnet, Magnet, 0103 physical sciences, Physics::Accelerator Physics, Electrical and Electronic Engineering, 010306 general physics
Abstract

The large aperture superconducting beam separation dipole (D1) must be developed as part of the high luminosity upgrade of the Large Hadron Collider (HL-LHC) at CERN. The most important specifications of the D1 are a coil aperture of 150 mm and field integral of 35 T·m at 12.0 kA and 1.9 K. The technical challenges of this magnet include predicting the changes in the size of the coils during fabrication, achieving a high radiation resistance, and management of the iron saturation. KEK is in charge of developing the D1. After conducting a series of design studies, a design consisting of a single-layer coil based on Nb-Ti technology with a collared yoke structure was selected. The fabrication of the first 2 m model of the D1 started at KEK in 2015. Newly developed radiation resistant glass-fiber-reinforced-plastics were utilized as coil parts in the accelerator magnets for the first time. The 2 m model was subjected to two cycles of cold test in the vertical cryostat at KEK. In this paper, we report on the fabrication of the 2 m model. We also present and discuss the quench test results from the perspective of the coil prestress.

Published
2017
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27. Magnetic Field Measurement of 2-m-Long Model of Beam Separation Dipole for the HL-LHC Upgrade

Author

Ezio Todesco, Shun Enomoto, Toru Ogitsu, Naoto Takahashi, M. Iida, Ken-ichi Sasaki, Shigekatu Sugawara, Kenichi Tanaka, Hiroshi Kawamata, Andrea Musso, Naoki Okada, Nobuhiro Kimura, Norio Higashi, Ryutaro Okada, Hirokatsu Ohhata, Michinaka Sugano, and Tatsushi Nakamoto

Subjects
Physics, 010308 nuclear & particles physics, High Luminosity Large Hadron Collider, Condensed Matter Physics, 01 natural sciences, Electronic, Optical and Magnetic Materials, Magnetic field, Nuclear physics, Dipole, Electromagnetic coil, Dipole magnet, Magnet, 0103 physical sciences, Physics::Accelerator Physics, High Energy Physics::Experiment, Electrical and Electronic Engineering, 010306 general physics, Excitation, Beam (structure)
Abstract

KEK has been developing a beam separation dipole magnet for the high luminosity large hadron collider upgrade. The magnet has a coil aperture of 150 mm and uses NbTi superconducting cable. A dipole magnetic field of 5.6 T is generated at 12 kA at 1.9 K to provide a field integral of 35 T·m. KEK has started the development of the first 2-m-long model magnet to evaluate the design and performance of the beam separation dipole magnet. The excitation test at 1.9 K of the first 2-m-long model magnet was performed from April to June 2016 at KEK. This paper presents the results of the magnetic field measurements of the first 2-m-long model magnet by a rotating coil probe.

Published
2017
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28. The High Luminosity LHC Upgrade Project

Author

Tatsushi Nakamoto

Subjects
Physics, Luminosity (scattering theory), 010308 nuclear & particles physics, 0103 physical sciences, Astronomy, 010306 general physics, 01 natural sciences, Lhc upgrade
Published
2017
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29. Measurement of thermal contact conductance between round-shaped superconducting wires and rectangular slot in copper block for application to cryogenic transfer tube

Author

Masami Iio, Makoto Yoshida, Nobuhiro Kimura, Ye Yang, Yasuhiro Makida, Tatsushi Nakamoto, Taekyung Ki, and Toru Ogitsu

Subjects
Thermal contact conductance, Superconductivity, Fluid Flow and Transfer Processes, Materials science, Physics::Instrumentation and Detectors, Liquid helium, 020209 energy, Mechanical Engineering, chemistry.chemical_element, 02 engineering and technology, Condensed Matter Physics, 01 natural sciences, Kapton, law.invention, chemistry, law, Magnet, 0103 physical sciences, Thermal, 0202 electrical engineering, electronic engineering, information engineering, Tube (fluid conveyance), Composite material, 010306 general physics, Helium
Abstract

At J-PARC (Japan Proton Accelerator Research Complex), the COMET (Coherent Muon to Electron Transition) experiment is being prepared. Pion-capture and muon-transport superconducting solenoid magnets will be used to capture pions and transport muons which are produced by pion decays. Since the radiation level is high near the magnets, a cold box and a current lead box, which supply a two-phase forced helium flow and currents to the magnets, will be located apart from the magnets. To connect the cold box and current lead box to the magnets, unique cryogenic transfer tubes that have thermal joints for installing NbTi superconducting lead wires at the insides of the transfer tubes are necessary. The transfer tubes should be able to make the wires thermally stable. In this paper, thermal contact conductance between three round-shaped NbTi/Cu monolith superconducting wires and a rectangular slot in a copper block is measured from 4.5 K to 10 K in six cases and a concept of a thermal joint is proposed for the unique transfer tube of the muon-transport superconducting solenoid magnet. In the thermal joint, the round-shaped superconducting wires make line contacts with the slot covered with one layer of a Kapton tape. The void volume in the slot is filled with Apiezon N grease. An experimental apparatus that uses liquid helium is utilized for measuring the thermal contact conductance in a sample of the thermal joint. The effect of thermal cycles on the thermal contact conductance is observed. The measured thermal contact conductance is used to determine the length of the thermal joint and the size of the gap between the thermal joints.

Published
2016
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30. Cryogenic system for COMET experiment at J-PARC

Author

Toru Ogitsu, Yasuhiro Makida, Makoto Yoshida, Masami Iio, Taekyung Ki, Tatsushi Nakamoto, Michinaka Sugano, Takahiro Okamura, Ye Yang, Ken-ichi Sasaki, and Satoshi Mihara

Subjects
Physics, Physics::Instrumentation and Detectors, Liquid helium, 020209 energy, Nuclear engineering, General Physics and Astronomy, Refrigeration, chemistry.chemical_element, Particle accelerator, Solenoid, 02 engineering and technology, Superconducting magnet, Cryogenics, 01 natural sciences, law.invention, Nuclear physics, chemistry, law, Magnet, 0103 physical sciences, 0202 electrical engineering, electronic engineering, information engineering, Physics::Accelerator Physics, General Materials Science, 010306 general physics, Helium
Abstract

Superconducting conductors and cryogenic refrigeration are key factors in the accelerator science because they enable the production of magnets needed to control and detect the particles under study. In Japan, a system for COMET (Coherent Muon to Electron Transition), which will produce muon beam lines, is under the construction at J-PARC (Japan Proton Accelerator Research Complex). The system consists of three superconducting magnets; the first is a pion-capture solenoid, the second is a muon-transport solenoid, and the third is a detector solenoid. It is necessary to cool down the magnets efficiently using two-phase helium and maintain them securely at 4.5 K. For stable cryogenic refrigeration of the magnets, a suitable cooling method, structures, and the irradiation effect on materials should be investigated. In this paper, we focus on the development of an overall cryogenic system for cooling the capture and transport solenoids. A conduction-cooling method is considered for cooling the capture and transport solenoids because of the advantages such as the reduction of total heat load, fewer components, and simplified structure. To supply cryogenic fluids (4.5 K liquid helium and 58 K gas helium) and currents to the conduction-cooled magnets subjected to high irradiation, cryogenic components (cooling paths in the magnets, transfer tubes, and a current lead box) are developed. Based on the environment of high irradiation, the conditions (temperature and pressure) of helium in cooling paths are estimated, as well as the temperature of the capture magnet. We develop a dynamic model for quench simulation and estimate the maximum pressure in the cooling pipe when the capture magnet quenches. We conclude with a discussion of the next steps and estimated challenges for the cryogenic system.

Published
2016
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31. Development of a 200-mm Short Model of Beam Separation Dipole for HL-LHC Upgrade

Author

Shun Enomoto, Nobuhiro Kimura, Ezio Todesco, Y. Ikemoto, Michinaka Sugano, Norio Higashi, Toru Ogitsu, Andrea Musso, Naoki Okada, Ken-ichi Sasaki, Qingjin Xu, Hiroshi Kawamata, Ryutaro Okada, and Tatsushi Nakamoto

Subjects
Physics, Aperture, High Luminosity Large Hadron Collider, Condensed Matter Physics, 01 natural sciences, Electronic, Optical and Magnetic Materials, Nuclear physics, Dipole, Dipole magnet, Electromagnetic coil, Magnet, 0103 physical sciences, Physics::Accelerator Physics, Electrical and Electronic Engineering, 010306 general physics, Storage ring, Beam (structure)
Abstract

The High Energy Accelerator Research Organization (KEK) has been developing the beam separation dipole magnet for the High Luminosity Large Hadron Collider (HL-LHC) upgrade. The magnet has a coil aperture of 150 mm, using Nb-Ti superconducting cable, and a dipole magnetic field of 5.6 T will be generated at 12 kA, at 1.9 K, to provide the field integral of 35 T·m. To verify the mechanical behavior of the magnet and to optimize the fabrication processes, we develop a 200-mm short model, which is the cross-sectional cutout of the magnet. The development includes validation of a series of fabrication processes. Coil stress in pole was monitored by strain gauges during collaring, yoking, and cooldown test.

Published
2016
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32. Measurement of displacement cross section of structural materials utilized in the proton accelerator facilities with the kinematic energy above 400 MeV

Author

Tatsushi Nakamoto, Shunsuke Makimura, Makoto Yoshida, Shin-ichiro Meigo, Hiroki Iwamoto, Taku Ishida, Shoichi Hasegawa, Fujio Maekawa, Yosuke Iwamoto, and Hiroki Matsuda

Subjects
Physics, Structural material, Proton, QC1-999, Particle accelerator, 02 engineering and technology, Kinematics, 021001 nanoscience & nanotechnology, 01 natural sciences, Displacement (vector), 010305 fluids & plasmas, law.invention, Computational physics, Cross section (physics), law, 0103 physical sciences, Atom, 0210 nano-technology, Energy (signal processing)
Abstract

For damage estimation of structural material in the accelerator facility, displacement per atom (DPA) is widely employed as an index of the damage calculated based on the displacement cross section obtained with the calculation model. Although the DPA is employed as the standard, the experimental data of displacement cross section are scarce for a proton in the energy region above 20 MeV. Among the calculation models, the difference exists about 8 times so that experimental data of the displacement cross section is crucial to validate the model. To obtain the displacement cross section, we conducted the experiment in J-PARC. As a preliminary result, the displacement cross section of copper was successfully obtained for 3-GeV proton. The present results showed that the widely utilized the Norgertt-Robinson-Torrens (NRT) model overestimates the cross section as suggested by the previous experiment for protons with lower energy.

Published
2020
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33. Influence of Al Composition Thickness on Critical Current Density in Transformation-Processed <tex-math notation='TeX'>$\hbox{Nb}_{3}\hbox{Al}$</tex-math> Superconductors

Author

Takao Takeuchi, Kazuhiko Nakagawa, Tomoaki Takao, S. Kato, Tatsushi Nakamoto, Yasuo Iijima, K. Tomita, Kiyosumi Tsuchiya, Akihiro Kikuchi, Nobuya Banno, and K. Suzuki

Subjects
Superconductivity, Quenching, Materials science, Condensed matter physics, Phase (matter), Critical current, Electrical and Electronic Engineering, Composition (combinatorics), Condensed Matter Physics, Layer thickness, Electronic, Optical and Magnetic Materials
Abstract

The influence of the Al layer thickness on the critical current density $J_{c}$ of transformation-processed $\hbox{Nb}_{3}\hbox{Al}$ superconductors was investigated. The Al layer thickness in the jerry-roll filaments of precursor wires was varied from 120 to 250 nm; the Nb layer thickness is proportional to the Al thickness, keeping the Nb–Al composition ratio to 3. The rapid heating and quenching (RHQ) operation condition was varied within a range of the conditions to form the ductile body-centered cubic (BCC) Nb–Al phase. The RHQ wires were also followed by an areal reduction process prior to the $\hbox{Nb}_{3}\hbox{Al}$ phase transformation. Thinner Al thickness wires show a steeper increase in $J_{c}$ with reduction in the area, whereas thicker Al thickness wires show a slower increase. The best $J_{c}$ performance was obtained for the thinnest Al thickness sample. Without areal reduction, there was not much difference in the optimum $J_{c}$ with respect to the Al thickness.

Published
2015
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34. Status of Superconducting Solenoid System for COMET Phase-I Experiment at J-PARC

Author

Tatsushi Nakamoto, Y. Fukao, Satoshi Mihara, Takahiro Okamura, Michinaka Sugano, Makoto Yoshida, Masami Iio, Ye Yang, Ken-ichi Sasaki, Toru Ogitsu, and Yasuhiro Makida

Subjects
Physics, Particle physics, Muon, Physics::Instrumentation and Detectors, Comet, Solenoid, Superconducting magnetic energy storage, Electron, Condensed Matter Physics, Electronic, Optical and Magnetic Materials, Nuclear physics, Pion, Electromagnetic coil, Physics::Accelerator Physics, High Energy Physics::Experiment, J-PARC, Electrical and Electronic Engineering, Nuclear Experiment
Abstract

The COMET Phase-I experiment now under construction at the Hadron Hall of J-PARC aims to search for coherent neutrinoless conversion of a muon to an electron. The experiment requires a large superconducting solenoid system that consists of 5-T pion capture solenoid and 5~3 T matching solenoid and 3-T 90° pion decay/muon transport curved solenoid. The capture solenoid encloses a target to generate pions. The neutron irradiation generated by the target causes various influences to the capture solenoid. One of the major issues is the cooling of the coil that can be degraded due to irradiation. The analyses and the design that accommodate the irradiation were performed. This paper summarizes the concept of the COMET Phase-I experiment and also the design of the solenoid system, including the analyses associated with the neutron irradiation. Manufacturing of the solenoid system has already started, and its status is also reported in this paper.

Published
2015
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35. Test Results of a Nb3Al/Nb3Sn Subscale Magnet for Accelerator Application

Author

Kiyosumi Tsuchiya, Emanuela Barzi, Ken-ichi Sasaki, Akio Terashima, Akihiro Kikuchi, Takao Takeuchi, Toru Ogitsu, Y. Ikemoto, Naoto Takahashi, Norio Higashi, Shun Enomoto, Akira Yamamoto, Kenichi Tanaka, Alexander V. Zlobin, Masami Iio, Michinaka Sugano, GianLuca Sabbi, Tatsushi Nakamoto, Ryutaro Okada, Qingjin Xu, and Nobuhiro Kimura

Subjects
Superconductivity, Fabrication, Materials science, Condensed matter physics, Nuclear engineering, Condensed Matter Physics, Electronic, Optical and Magnetic Materials, Magnetic field, Electromagnetic coil, Dipole magnet, Magnet, Fermilab, Electrical and Electronic Engineering, Excitation
Abstract

The High Energy Accelerator Research Organization (KEK) has been developing a Nb3Al and Nb3Sn subscale magnet to establish the technology for a high-field accelerator magnet. The development goals are a feasibility demonstration for a Nb3Al cable and the technology acquisition of magnet fabrication with Nb3Al superconductors. KEK developed two double-pancake racetrack coils with Rutherford-type cables composed of 28 Nb3Al wires processed by rapid heating, quenching, and transformation in collaboration with the National Institute for Materials Science and the Fermi National Accelerator Laboratory. The magnet was fabricated to efficiently generate a high magnetic field in a minimum-gap common-coil configuration with two Nb3Al coils sandwiched between two Nb3Sn coils produced by the Lawrence Berkeley National Laboratory. A shell-based structure and a “bladder and key” technique have been used for adjusting coil prestress during both the magnet assembly and the cool down. In the first excitation test of the magnet at 4.5 K performed in June 2014, the highest quench current of the Nb3Sn coil, i.e., 9667 A, was reached at 40 A/s corresponding to 9.0 T in the Nb3Sn coil and 8.2 T in the Nb3Al coil. The quench characteristics of the magnet were studied.

Published
2015
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36. Design Optimization of the New D1 Dipole for HL-LHC Upgrade

Author

E. Todesco, Ken-ichi Sasaki, Masami Iio, Tatsushi Nakamoto, Bernhard Auchmann, Toru Ogitsu, Akira Yamamoto, and Qingjin Xu

Subjects
Physics, Luminosity (scattering theory), Large Hadron Collider, Physics::Instrumentation and Detectors, Superconducting magnet, Condensed Matter Physics, Synchrotron, Electronic, Optical and Magnetic Materials, law.invention, Nuclear physics, Dipole, Upgrade, Nuclear magnetic resonance, law, Electromagnetic coil, Magnet, Electrical and Electronic Engineering
Abstract

The High-Luminosity Large Hadron Collider upgrade (LHC) project aims to increase the peak luminosity of the LHC to 5 ×1034 cm - 2s - 1, and a total integrated luminosity of 3000 fb - 1 from 2020 to 2030 by upgrading the low-beta insertion system for the ATLAS and CMS experiments. The aperture of the insertion magnets including the focusing/defocusing quadrupoles and separation dipoles will be doubled to achieve a smaller β*. This paper presents the latest design updates of the separation dipole D1 magnet, including the study of the different cable types to vary the main field; the modifications of the iron shape for the new design options to minimize the iron saturation effect on field quality; and the optimization of the coil ends to reduce the peak field and higher order harmonic field integrals in the ends.

Published
2014
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37. Analysis of Strain Distribution in A15-Type Superconducting Coils Under Compressive Stress

Author

Tatsushi Nakamoto, Qingjin Xu, Masami Iio, and Akira Yamamoto

Subjects
Superconductivity, Rutherford cable, Materials science, Stress–strain curve, Superconducting magnet, Condensed Matter Physics, Electronic, Optical and Magnetic Materials, Stress (mechanics), Compressive strength, Condensed Matter::Superconductivity, Electrical and Electronic Engineering, Composite material, Type-II superconductor, Electrical conductor
Abstract

The A15-type superconductors (Nb3Sn, Nb3Al) have been used to fabricate the 10 -15-T high-field superconducting magnets. Due to the strain sensitivity of this type of conductors, minimization of the strain in conductors is an important issue to realize the highest critical current density during operation. It is also known that the superconductors in epoxy-impregnated coils exhibit much less critical current degradation than wire samples when subjected to transverse compressive stress, due to the stress buffer effect of the epoxy and insulation materials among strands. This paper presents analytical and numerical investigation of the stress and strain distributions in A15-type superconducting coils, which are usually wound with copper-stabilized Rutherford cable and are epoxy impregnated. Analytical formulas have been derived to calculate the strain in superconductors from the average strain in coils. In addition, a FEM simulation model has been built to get a clear view of the strain distribution between superconductors and the surrounding insulation materials.

Published
2014
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38. Recent R&D on Superconducting Wires for High-Field Magnet

Author

Jun Abe, Akihiro Kikuchi, Yoshinori Yanagisawa, Masato Takahashi, Hideaki Maeda, Stefanus Harjo, Xin Zhe Jin, Akira Yamamoto, Kiyosumi Tsuchiya, Takaaki Iwahashi, Takao Takeuchi, Toru Ogitsu, Tatsushi Nakamoto, Wu Gong, and Michinaka Sugano

Subjects
Superconductivity, Quenching, Materials science, Thermal runaway, business.industry, Mechanical Engineering, Superconducting wire, Electrical engineering, engineering.material, Condensed Matter Physics, Engineering physics, Mechanics of Materials, Electromagnetic coil, Magnet, Electromagnetic shielding, engineering, General Materials Science, Current (fluid), business
Abstract

Development for superconducting wires of materials such as Nb3Al and the high-temperature superconductors (HTS such as REBCO, Bi2223, and Bi2212) has been carried out for high-field magnet applications. It is known that these types of wire exhibit very different characteristics and performance for different applications. The development of Nb3Al wire for high-field accelerator magnet has resulted in remarkable achievements in critical current using a Rapid Heating and Quenching (RHQ) method by High Energy Accelerator Research Organization (KEK) and National Institute for Materials Science (NIMS). As one example of a characteristic of Nb3Al, the strain sensitivity of the critical current in the RHQ-Nb3Al wire is better than that of Nb3Sn wire. A strain study is needed to further the development of a high-filed magnet; therefore, we have carried out experimental studies using the neutron diffractometer at J-PARC Takumi. Researchers have recently achieved the highest critical current density for REBCO wires in a high-field above 15 T. For this reason, REBCO wire has been considered for high-field magnet NMR applications in Riken. But several obstacles remain, including coil degradation, shielding current and thermal runaway. In this paper, R&D on recent advances for applications will be presented.

Published
2014
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39. Recent Progress in Methods for Non-invasive Measurements of Local Strain in Practical Superconducting Wires and Conductors using Quantum Beam Techniques

Author

Yoshinori Tsuchiya, Michinaka Sugano, Kozo Osamura, Hidetoshi Oguro, Shutaro Machiya, Tatsushi Nakamoto, Stefanus Harjo, Hiroshi Suzuki, Xinzhe Jin, Tsutomu Hemmi, Kohki Takahashi, Kentaro Kajiwara, and Satoshi Awaji

Subjects
Superconductivity, Materials science, Condensed matter physics, Strain (chemistry), Non invasive, Electrical conductor, Quantum, Beam (structure)
Published
2014
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40. Neutron diffraction study on martensitic transformation under compressive stress in an ordered Fe3Pt

Author

Takashi Yamaguchi, Tomoyuki Kakeshita, Takashi Fukuda, Tatsushi Nakamoto, and Stefanus Harjo

Subjects
010302 applied physics, Materials science, Condensed matter physics, Neutron diffraction, Alloy, General Physics and Astronomy, 02 engineering and technology, Atmospheric temperature range, engineering.material, 021001 nanoscience & nanotechnology, 01 natural sciences, Tetragonal crystal system, Compressive strength, Diffusionless transformation, Lattice (order), 0103 physical sciences, engineering, 0210 nano-technology, Softening
Abstract

We have studied the structure change of an ordered Fe3Pt (degree of order ∼0.75) under a compressive stress applied in the [001] direction by neutron diffraction. In the absence of the stress, the alloy exhibits a weak first order martensitic transformation at 90 K from the L12-type cubic structure to the L60-type tetragonal structure. Under the compressive stress of 100 MPa, the first order nature of the thermally-induced martensitic transformation was undetectable in the temperature range of between 70 K and 270 K. The first order nature of the stress-induced martensitic transformation was also undetectable in the stress range of between 6 MPa and 300 MPa when tested at 120 K and higher temperatures. Under these conditions, the lattice parameters change continuously both in the cooling process and in the stress-applying process. Despite the disappearance of the first order nature of martensitic transformation, a significant stress-induced softening of lattice, which is regarded as a precursor phenomenon of martensitic transformation, was observed between 120 K and 265 K but not at 93 K and 295 K.We have studied the structure change of an ordered Fe3Pt (degree of order ∼0.75) under a compressive stress applied in the [001] direction by neutron diffraction. In the absence of the stress, the alloy exhibits a weak first order martensitic transformation at 90 K from the L12-type cubic structure to the L60-type tetragonal structure. Under the compressive stress of 100 MPa, the first order nature of the thermally-induced martensitic transformation was undetectable in the temperature range of between 70 K and 270 K. The first order nature of the stress-induced martensitic transformation was also undetectable in the stress range of between 6 MPa and 300 MPa when tested at 120 K and higher temperatures. Under these conditions, the lattice parameters change continuously both in the cooling process and in the stress-applying process. Despite the disappearance of the first order nature of martensitic transformation, a significant stress-induced softening of lattice, which is regarded as a precursor phenomenon...

Published
2019
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41. Positron separators in Superomega muon beamline at J-PARC

Author

Yasuhiro Makida, Akira Yamamoto, T. Nagatomo, Tatsushi Nakamoto, Kusuo Nishiyama, Yasuhiro Miyake, Naritoshi Kawamura, Koichiro Shimomura, Patrick Strasser, A. Koda, Ryutaro Okada, Hirokatsu Ohata, Wataru Higemoto, Amba Datt Pant, Takahiro Okamura, K. Nakahara, Yutaka Ikedo, R. Okubo, H. Fujimori, Shunsuke Makimura, Takashi U. Ito, Y Kobayashi, Toru Ogitsu, Katsuhiko Ishida, Minoru Yoshida, J. Nakamura, T. Adachi, and Ken-ichi Sasaki

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Muon, Wien filter, Physics::Instrumentation and Detectors, Separator (oil production), Nuclear physics, Positron, Beamline, Muon collider, Physics::Accelerator Physics, High Energy Physics::Experiment, J-PARC, Instrumentation, Beam (structure)
Abstract

A positron separator is one of the essential components of a muon beamline to eliminate contamination in the beam, mainly positrons that have the same momentum as muons and are transported together with the beam. In order to eliminate positrons efficiently, we selected a Wien filter type three-stage positron separator for the new muon beamline, called Superomega, that is under construction in the Materials and Life Science Experimental Facility (MLF) of the Japan Accelerator Research Complex (J-PARC). The Superomega muon beamline is the second muon beamline at MLF/J-PARC, and started operation in October of 2012. Here, we report on the features and the test results of the positron separators installed in the Superomega muon beamline.

Published
2013
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42. Superconducting curved transport solenoid with dipole coils for charge selection of the muon beam

Author

Ken-ichi Sasaki, Yutaka Ikedo, K. Nakahara, Hirokatsu Ohhata, R. Ohkubo, T.U. Itoh, Akira Yamamoto, Shunsuke Makimura, Koichiro Shimomura, Akihiro Koda, Minoru Yoshida, Wataru Higemoto, Takahiro Okamura, Yasuhiro Miyake, Yasuhiro Makida, Tatsushi Nakamoto, Amba Datt Pant, Hiroshi Fujimori, Jumpei Nakamura, Ryutaro Okada, Toru Ogitsu, Naritoshi Kawamura, Katsuhiko Ishida, Takashi Nagatomo, Kusuo Nishiyama, Patrick Strasser, and T. Adachi

Subjects
Physics, Superconductivity, Nuclear and High Energy Physics, Muon, Physics::Instrumentation and Detectors, Solid angle, Solenoid, Nuclear physics, Dipole, Beamline, Physics::Accelerator Physics, J-PARC, Instrumentation, Beam (structure)
Abstract

At the J-PARC Muon Science Facility (MUSE) the Super-Omega muon beamline is now under construction in the experimental hall No. 2 of the Materials and Life Science Facility building. Muons up to 45 MeV/c will be extracted with a large acceptance solid angle to produce the world highest intensity pulsed muon beam. This beamline comprises three parts, a normal-conducting capture solenoid, a superconducting curved transport solenoid and an axial focusing solenoid. Since only solenoids are used, both surface μ+ and cloud μ− are extracted simultaneously. To accommodate future experiments that would only require either μ+ or μ− beam, two dipole coils located on the straight section of the curved solenoid provide the muon charge selection by directing one of the beam onto the solenoid inner-wall. The design parameters, the construction status and the initial beam commissioning are reported.

Published
2013
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43. Tensile strain dependence of critical current of RHQ-Nb3Al wires

Author

Akira Yamamoto, Hidetoshi Oguro, Takayoshi Ito, Takao Takeuchi, Kiyosumi Tsuchiya, Akihiro Kikuchi, Xinzhe Jin, Toru Ogitsu, Tatsushi Nakamoto, Satoshi Awaji, and Stefanus Harjo

Subjects
Stress (mechanics), Superconductivity, Quenching, Materials science, Strain (chemistry), Magnet, Neutron diffraction, Ultimate tensile strength, General Physics and Astronomy, General Materials Science, Critical current, Composite material
Abstract

Nb 3 Al superconducting wires produced by rapid heating and quenching (RHQ) have been developed for high-field accelerator magnets. It is known that critical currents of A15 superconductors (e.g., Nb 3 Al and Nb 3 Sn) have a dependence on stress/strain. It is thus important to clarify the stress/strain behavior of the RHQ-Nb 3 Al wires for the development of high-field accelerator magnets. We recently started experimentally investigating the strain dependence of the critical current of the RHQ-Nb 3 Al wires with a Ta interfilament by measuring their critical currents under longitudinal tensile strains. To evaluate the effect of residual strain in Nb 3 Al filaments induced by thermal contraction of the materials in the wire, neutron diffraction measurements were performed at room temperature.

Published
2012
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44. Observation of A15 phase transformation in RHQ-Nb3Al wire by neutron diffraction at high-temperature

Author

Takayoshi Ito, Tsutomu Hemmi, Stefanus Harjo, Takao Takeuchi, Xinzhe Jin, Toru Ogitsu, Akira Yamamoto, Tatsushi Nakamoto, Kiyosumi Tsuchiya, and Akihiro Kikuchi

Subjects
Superconductivity, Quenching, Phase transition, Materials science, Condensed matter physics, Mechanical Engineering, Neutron diffraction, Isotropy, Metals and Alloys, Mechanics of Materials, Magnet, Phase (matter), Materials Chemistry, Solid solution
Abstract

Nb 3 Al superconducting wires produced by rapid heating and quenching (RHQ) method have been developed for application to high field accelerator magnet. In an A15-type superconductor, it is known that residual strain in the superconducting phase induced by thermal contraction after heat treatment influences superconducting properties such as the critical current density. After RHQ treatment, a solid solution of NbAl y with a bcc structure was formed from a jelly-roll of Nb and Al sheets in the wire. To observe the A15 phase transition in the NbAl y and to clarify the mechanism of residual strain generation in the RHQ-Nb 3 Al wire, neutron diffraction measurements were carried out on the J-PARC “TAKUMI” between room-temperature and 800 °C, in which the Nb 3 Al superconducting phase is formed. Here, we report measurements on an RHQ-Nb 3 Al wire with an Nb/Ta composite matrix, using single-peak analysis and multi-peak analysis for peak intensity fitting and peak position fitting, respectively. The phase transition to the A15 was found to occur within a short period about 5 min while the temperature was increasing from 735 to 800 °C. Along the axial direction of the wire, growth of the A15 phase was found to be optimized using a subsequent holding process of 9 h at 800 °C. Following cooling to room temperature, the Nb 3 Al filaments in the wire exhibited an isotropic tensile residual strain of about 0.07%.

Published
2012
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45. Status of the Superomega Muon Beam Line at J-PARC

Author

Shunsuke Makimura, Akira Yamamoto, Naritoshi Kawamura, Kusuo Nishiyama, Kenichi Tanaka, Katsuhiko Ishida, Koichiro Shimomura, Nobuhiro Kimura, Hiroshi Fujimoria, Akihiro Koda, Makoto Yoshida, Wataru Higemoto, Ken-ichi Sasaki, Yasuyuki Matsuda, Akira Sato, Patrick Strasser, K. Nakahara, Yasuhiro Miyake, Yasuhiro Makida, T. Adachi, Tatsushi Nakamoto, Yutaka Ikedo, Toru Ogitsu, and Yasuo Ajima

Subjects
Physics, Muon, Physics::Instrumentation and Detectors, Solid angle, Solenoid, Superconducting magnet, Physics and Astronomy(all), Nuclear physics, Muon beam, Conceptual design, Beamline, Beam optics simulation, Physics::Accelerator Physics, J-PARC, Beam (structure)
Abstract

Superomega muon beamline is currently under construction at Experimental hall No. 2 of Materials and Life Science Facility at J-PARC in Tokai, Japan. The beamline has a large solid angle acceptance, and will produce the highest intensity pulsed muon beam in the world. The beamline is designed to capture both surface positive and cloud negative muons for simultaneous use in a variety of experiments. The expected rate of surface muons for this beamline is 4×108 μ+/s, and that for cloud muons is 107 μ−/s. The beamline consists of the normal-conducting capture solenoid, the superconducting curved transport solenoid and axial focusing solenoid. The construction of the capture solenoid has been completed and installed in March 2009, and the transport solenoid is now fabricated, and will be installed by the end of 2011. The conceptual design of the axial focusing solenoid is completed, and the mechanical design is underway.

Published
2012
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46. Status of Superconducting Magnet System for the J-PARC Neutrino Beam Line

Author

Hirokatsu Ohhata, M. Shibata, A. Jain, Ken-ichi Sasaki, Nobuhiro Kimura, K. Nakayoshi, Takahiro Okamura, A.K. Ghosh, O. Araoka, T. Ishii, M. Iida, Joseph Muratore, R. Iwasaki, H. Kakuno, Toru Ogitsu, Takashi Kobayashi, T. Nakadaira, J. Escallier, Yasuhiro Makida, Tatsushi Nakamoto, G. Ganetis, Y. Fujii, Ramesh Gupta, K. Sakashita, Minoru Yoshida, Michael Anerella, Ryutaro Okada, J. P. Charrier, T. Boussuge, P. Wanderer, Michinaka Sugano, and Brett Parker

Subjects
Cryostat, Physics, Nuclear engineering, Superconducting magnet, Condensed Matter Physics, Electronic, Optical and Magnetic Materials, Nuclear physics, Electromagnetic coil, Magnet, Damages, Recovery procedure, J-PARC, Electrical and Electronic Engineering, Neutrino
Abstract

The Great East Japan earthquake that occurred on March 11, 2011 resulted in devastating damages to J-PARC. Although damages to the superconducting magnet system for the J-PARC neutrino beam line appeared to be relatively small, a long recovery procedure was required to resume the operation. Except for this long shutdown period, the system has been operated stably ensuring good accumulation of the physics data. The paper reports on the operation status including the damages by the earthquake and its recovery process. Repair of the insufficient cooling of steering corrector coils, which was present prior to the earthquake, was also performed during the recovery process. The paper also reports on the repair.

Published
2011
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47. Development of Ta-matrix ${\rm Nb}_{3}{\rm Al}$ Strand and Cable for High-Field Accelerator Magnet

Author

Takao Takeuchi, Alexander Zlobin, Kiyosumi Tsuchiya, Y Kuroda, A.K. Ghosh, Akio Terashima, S. Nimori, Tomoaki Takao, Akihiro Kikuchi, Kazuhide Tanaka, Yasuo Iijima, Nobuya Banno, Tatsushi Nakamoto, Ryuji Yamada, M. Maruyama, Emanuela Barzi, H. Takigawa, and Kazuhiko Nakagawa

Subjects
Superconductivity, Physics::Biological Physics, Quantitative Biology::Biomolecules, Rutherford cable, Fabrication, Large Hadron Collider, Materials science, Superconducting magnet, Condensed Matter Physics, Electronic, Optical and Magnetic Materials, Nuclear magnetic resonance, Magnet, Physics::Accelerator Physics, Fermilab, Electrical and Electronic Engineering, Composite material, Type-II superconductor
Abstract

Research and development of Nb3Al strands and cables for a high field accelerator magnet is ongoing under the framework of the CERN-KEK collaboration. In this program, new Ta-matrix Nb3Al strands were developed and their mechanical properties and superconducting properties were studied. The non-Cu Jc values of these strands were 750 ~ 800 A/mm2 at 15 T and 4.2 K. Using these strands, test fabrication of 27-strand Rutherford cable was carried out in collaboration with NIMS and Fermilab. The properties of the strands extracted from the cable were examined and it was found that there was no degradation of the superconducting properties of the strands. In this paper, we report the fabrication of the strands and the cable in brief and present some of the results obtained by studying their properties.

Published
2011
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48. Superconducting Solenoid Magnets for the COMET Experiment

Author

Minoru Yoshida, Kazuhide Tanaka, Toru Ogitsu, Akira Yamamoto, Atsushi Sato, Masaharu Aoki, Tatsushi Nakamoto, and Y. Kuno

Subjects
Physics, Muon, Physics::Instrumentation and Detectors, Superconducting wire, Solenoid, Superconducting magnet, engineering.material, Condensed Matter Physics, Electronic, Optical and Magnetic Materials, Nuclear physics, Pion, Magnet, Electromagnetic shielding, engineering, Physics::Accelerator Physics, High Energy Physics::Experiment, Electrical and Electronic Engineering, Lepton
Abstract

An intense muon beam is mandatory for next-generation experiments to search for lepton flavor violating processes in the muon sector. The COMET experiment, J-PARC E21, aims to search for muon to electron conversion with an unprecedented sensitivity. All the components of the experiment, such as the pion production target, the muon stopping target and the tracker are embedded in superconducting solenoids, resulting in a total length longer than 30 m. The pions are captured in a 5 T solenoid magnet with a diameter of 1.3 m, and decay to muons in the subsequent 3 T toroidal magnets over a length of 10 m. The pion capture solenoid is designed to be as small as possible, however, thick shielding is necessary within the solenoid to avoid severe radiation from the target. Aluminum-stabilized NbTi superconducting wire is employed to reduce the cold mass and energy deposited in it. The damage of the conductor of the coils should be estimated carefully, since the expected neutron fluence reaches 1022 neutrons/m2. This paper describes the design of the solenoid magnets and R&D programs.

Published
2011
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49. Conceptual Design of a Superconducting Solenoid System for the Super Omega Muon Beam Line at J-PARC

Author

Naritoshi Kawamura, Takahiro Okamura, Minoru Yoshida, Toru Ogitsu, Koichiro Shimomura, K. Nakahara, T. Adachi, Yasuhiro Makida, Tatsushi Nakamoto, Ken-ichi Sasaki, Yasuhiro Miyake, Akihiro Koda, Patrick Strasser, and Yutaka Ikedo

Subjects
Physics, Solenoid, Superconducting magnet, Condensed Matter Physics, Synchrotron, Electronic, Optical and Magnetic Materials, law.invention, Magnetic field, Nuclear physics, Beamline, law, Magnet, Physics::Accelerator Physics, J-PARC, Electrical and Electronic Engineering, Beam (structure)
Abstract

A 3-GeV (333 μA, 1.0 MW) proton beam from the J-PARC Rapid Cycle Synchrotron passes through a graphite target producing muons in the Materials and Life Science Facility. Muons of various momenta of up to 50 MeV/c and of both electric charges are captured and transported to an experimental area by using an axial magnetic field in the bore of solenoid magnets. This beam line, named Super Omega, is composed of a normal conducting MIC (Mineral Insulation Cable) magnet for capture, a curved superconducting solenoid system for transportation, and an axial focusing magnet system. Once in the experimental area, the muon beam is focused onto an experimental target for various purposes. The superconducting solenoid system is composed of one 6-m long straight section and two 45-degree segmented curved sections at both ends of the straight section. A magnetic field of about 2 T is applied in the transportation channel of 300 mm in diameter. The conceptual design of this solenoid system is reported.

Published
2011
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50. Quench Protection of Curved Solenoids for High Intensity Muon Beamlines

Author

Yasuhiro Makida, Minoru Yoshida, Tatsushi Nakamoto, Ken-ichi Sasaki, T. Adachi, Atsushi Sato, Akira Yamamoto, Yutaka Ikedo, Y. Kuno, Yasuhiro Miyake, and Toru Ogitsu

Subjects
Physics, Superconductivity, Muon, Physics::Instrumentation and Detectors, business.industry, Heating element, High Energy Physics::Lattice, High intensity, Physics::Medical Physics, Solenoid, Superconducting magnet, Physics::Classical Physics, Condensed Matter Physics, Electronic, Optical and Magnetic Materials, Nuclear physics, Optics, Beamline, Electromagnetic coil, Physics::Accelerator Physics, Electrical and Electronic Engineering, business
Abstract

A quench protection system for superconducting curved segmented solenoids has been experimentally studied. The curved solenoids consist of short straight solenoids aligned along a curved beamline axis. The quench propagation between the short solenoids may not naturally occur because of the separation between the solenoids, and an artificial quench need to be induced by a protection heater for each short solenoid to boost the quench propagation. A protection heater driven by the coil self current was tested with a model coil.

Published
2011
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