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31 results on '"29.30.Aj"'

1. Atomic masses of intermediate-mass neutron-deficient nuclei with relative uncertainty down to 35-ppb via multireflection time-of-flight mass spectrograph.

Author

Kimura, S., Ito, Y., Kaji, D., Schury, P., Wada, M., Haba, H., Hashimoto, T., Hirayama, Y., MacCormick, M., Miyatake, H., Moon, J.Y., Morimoto, K., Mukai, M., Murray, I., Ozawa, A., Rosenbusch, M., Schatz, H., Takamine, A., Tanaka, T., and Watanabe, Y.X.

Subjects
*ATOMIC mass, *TIME-of-flight mass spectrometry, *MASS measurement, *NEUTRONS, *MASS (Physics)
Abstract

High-precision mass measurements of Cu 63 , Zn 64 − 66 , Ga 65 , Ge 65 − 67 , As 67 , Br 78 , 81 , Rb 80 , and Sr 79 were performed utilizing a multireflection time-of-flight mass spectrograph combined with the gas-filled recoil ion separator GARIS-II. In the case of Ga 65 , a mass uncertainty of 2.1 keV, corresponding to a relative precision of δm / m = 3.5 × 10 −8 , was obtained and the mass value is in excellent agreement with the 2016 Atomic Mass Evaluation. For Ge 67 and Br 81 , where masses were previously deduced through indirect measurements, discrepancies with literature values were found. The feasibility of using this device for mass measurements of more neutron-deficient nuclei, which have significant impact on the rp -process pathway, is discussed. [ABSTRACT FROM AUTHOR]

Published
2018
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2. Comparison of measured electron energy spectra for six matched, radiotherapy accelerators

Author

Kenneth R. Hogstrom, John P. Gibbons, Daniel W. Neck, and David J. McLaughlin

Subjects
magnetic energy spectrometer, 29.27.Fh, 87.55.Qr, 87.56.Fc, electron energy spectra, Electrons, Electron, Spectral line, 29.30.Aj, beam matching, 030218 nuclear medicine & medical imaging, 03 medical and health sciences, 0302 clinical medicine, Optics, Neoplasms, Radiation Oncology Physics, Humans, Radiology, Nuclear Medicine and imaging, Instrumentation, Physics, Radiation, Spectrometer, Phantoms, Imaging, business.industry, 87.56.bd, Radiotherapy Planning, Computer-Assisted, Radiotherapy Dosage, Full width at half maximum, 030220 oncology & carcinogenesis, Magnet, percent dose vs depth, Beam matching, Radiotherapy, Intensity-Modulated, Particle Accelerators, business, Monte Carlo Method, Beam (structure), Energy (signal processing)
Abstract

This study compares energy spectra of the multiple electron beams of individual radiotherapy machines, as well as the sets of spectra across multiple matched machines. Also, energy spectrum metrics are compared with central‐axis percent depth‐dose (PDD) metrics. Methods A lightweight, permanent magnet spectrometer was used to measure energy spectra for seven electron beams (7–20 MeV) on six matched Elekta Infinity accelerators with the MLCi2 treatment head. PDD measurements in the distal falloff region provided R 50 and R 80–20 metrics in Plastic Water®, which correlated with energy spectrum metrics, peak mean energy (PME) and full‐width at half maximum (FWHM). Results Visual inspection of energy spectra and their metrics showed whether beams on single machines were properly tuned, i.e., FWHM is expected to increase and peak height decrease monotonically with increased PME. Also, PME spacings are expected to be approximately equal for 7–13 MeV beams (0.5‐cm R90 spacing) and for 13–16 MeV beams (1.0‐cm R90 spacing). Most machines failed these expectations, presumably due to tolerances for initial beam matching (0.05 cm in R 90; 0.10 cm in R 80–20) and ongoing quality assurance (0.2 cm in R 50). Also, comparison of energy spectra or metrics for a single beam energy (six machines) showed outlying spectra. These variations in energy spectra provided ample data spread for correlating PME and FWHM with PDD metrics. Least‐squares fits showed that R 50 and R 80–20 varied linearly and supralinearly with PME, respectively; however, both suggested a secondary dependence on FWHM. Hence, PME and FWHM could serve as surrogates for R 50 and R 80–20 for beam tuning by the accelerator engineer, possibly being more sensitive (e.g., 0.1 cm in R 80–20 corresponded to 2.0 MeV in FWHM). Conclusions Results of this study suggest a lightweight, permanent magnet spectrometer could be a useful beam‐tuning instrument for the accelerator engineer to (a) match electron beams prior to beam commissioning, (b) tune electron beams for the duration of their clinical use, and (c) provide estimates of PDD metrics following machine maintenance. However, a real‐time version of the spectrometer is needed to be practical.

Published
2018
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3. Production and trapping of radioactive atoms at the TRIμP facility

Author

Traykov, E., Dammalapati, U., De, S., Dermois, O.C., Huisman, L., Jungmann, K., Kruithof, W., Mol, A.J., Onderwater, C.J.G., Rogachevskiy, A., da Silva e Silva, M., Sohani, M., Versolato, O., Willmann, L., and Wilschut, H.W.

Subjects
*MECHANICS (Physics), *DIFFUSION, *ANISOTROPY, *ANTIMATTER
Abstract

Abstract: The structures for the TRIμP facility have been completed and commissioned. At the facility radioactive nuclides are produced to study fundamental interactions and symmetries. An important feature is the possibility to trap radioactive atoms in order to obtain and hold a pure substrate-free sample for precision measurements. In the TRIμP facility a production target is followed by a magnetic separator, where radioactive isotopes are produced in inverse reaction kinematics. Separation up to 99.95% could be achieved for 21Na. A novel transmitting thermal ionizing device was developed to stop the energetic isotopes. Some 50% of stopped 21Na could be extracted and transported as low energy singly charged ions into a radio frequency quadrupole cooler and buncher with 35% transmission efficiency. The ions are transported lossless via a drift tube and a low energy electrostatic beam line into the experimental setup. Such ions can be neutralized on hot metal foils and the resulting atoms can be stored in a magneto-optical trap. The functioning of that principle was demonstrated with stable Na extracted from the thermal ionizer, radioactive beams will follow next. [Copyright &y& Elsevier]

Published
2008
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4. Atomic masses of intermediate-mass neutron-deficient nuclei with relative uncertainty down to 35-ppb via multireflection time-of-flight mass spectrograph

Author

M. Mukai, Daiya Kaji, Y. X. Watanabe, Hermann Wollnik, Michiharu Wada, Peter Schury, Hendrik Schatz, Hiromitsu Haba, T. Tanaka, S. Kimura, Y. Ito, Yoshikazu Hirayama, Hiroari Miyatake, I. Murray, J.Y. Moon, T. Hashimoto, Marco Rosenbusch, Akira Ozawa, M. MacCormick, A. Takamine, Kouji Morimoto, Institut de Physique Nucléaire d'Orsay (IPNO), and Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)

Subjects
GARIS-II, Analytical chemistry, FOS: Physical sciences, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Mass spectrometry, MRTOF-MS, 01 natural sciences, 29.30.Aj, Ion, Recoil, 0103 physical sciences, Neutron, Physical and Theoretical Chemistry, Nuclear Experiment (nucl-ex), 010306 general physics, Nuclear Experiment, Instrumentation, Spectroscopy, 010308 nuclear & particles physics, Chemistry, rp -Process, Condensed Matter Physics, 26.30.Ca, Atomic mass, Time of flight, rp-Process, 21.10.Dr, Relative precision, Nuclear masses
Abstract

High-precision mass measurements of $^{63}$Cu, $^{64-66}$Zn, $^{65}$Ga, $^{65-67}$Ge, $^{67}$As, $^{78,81}$Br, $^{80}$Rb, and $^{79}$Sr were performed utilizing a multireflection time-of-flight mass spectrograph combined with the gas-filled recoil ion separator GARIS-II. In the case of $^{65}$Ga, a mass uncertainty of 2.1 keV, corresponding to a relative precision of $\delta m / m = 3.5\times10^{-8}$, was obtained and the mass value is in excellent agreement with the 2016 Atomic Mass Evaluation. For $^{67}$Ge and $^{81}$Br, where masses were previously deduced through indirect measurements, discrepancies with literature values were found. The feasibility of using this device for mass measurements of nuclides more neutron-deficient side, which have significant impact on the $rp$-process pathway, is discussed., Comment: 15 pages, 6 figures, 1 table

Published
2017
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5. Energy Acceptance of the St. George Recoil Separator

Author

Gwenaelle Gilardy, M. Moran, Manoel Couder, C. Seymour, Jaclyn Schmitt, Zach Meisel, Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre d'Etudes Nucléaires de Bordeaux Gradignan ( CENBG ), and Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS ( IN2P3 ) -Centre National de la Recherche Scientifique ( CNRS )

Subjects
Nuclear reaction, Nuclear and High Energy Physics, Physics - Instrumentation and Detectors, Hydrogen, chemistry.chemical_element, FOS: Physical sciences, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 7. Clean energy, 01 natural sciences, 29.30.Aj, Nuclear physics, Neon, Rigidity (electromagnetism), Recoil, Nucleosynthesis, Recoil mass separator, 0103 physical sciences, Radiative transfer, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], [ PHYS.NEXP ] Physics [physics]/Nuclear Experiment [nucl-ex], Nuclear Experiment (nucl-ex), 010306 general physics, Nuclear Experiment, [ PHYS.PHYS.PHYS-INS-DET ] Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], 010303 astronomy & astrophysics, Instrumentation, Helium, Physics, Radiative alpha-capture, 26.20.Fj, Instrumentation and Detectors (physics.ins-det), chemistry, Atomic physics
Abstract

Radiative alpha-capture, ($\alpha,\gamma$), reactions play a critical role in nucleosynthesis and nuclear energy generation in a variety of astrophysical environments. The St. George recoil separator at the University of Notre Dame's Nuclear Science Laboratory was developed to measure ($\alpha,\gamma$) reactions in inverse kinematics via recoil detection in order to obtain nuclear reaction cross sections at the low energies of astrophysical interest, while avoiding the $\gamma$-background that plagues traditional measurement techniques. Due to the $\gamma$-ray produced by the nuclear reaction at the target location, recoil nuclei are produced with a variety of energies and angles, all of which must be accepted by St. George in order to accurately determine the reaction cross section. We demonstrate the energy acceptance of the St. George recoil separator using primary beams of helium, hydrogen, neon, and oxygen, spanning the magnetic and electric rigidity phase space populated by recoils of anticipated ($\alpha,\gamma$) reaction measurements. We found the performance of St. George meets the design specifications, demonstrating its suitability for ($\alpha,\gamma$) reaction measurements of astrophysical interest., Comment: Accepted to Nuclear Instruments and Methods in Physics Research A

Published
2017
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11. Complex nuclear-structure phenomena in the cooling down of highly excited nuclear systems

Author

M. V. Ricciardi, A.V. Ignatyuk, P. Napolitani, O. Yordanov, F. Rejmund, K.-H. Schmidt, A. Kelic, Grand Accélérateur National d'Ions Lourds (GANIL), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), D. Amadova, A. Krugler, and P. Tlusty

Subjects
NUCLEAR REACTIONS, Nuclear reaction, Physics, 25.75.-q, 29.30.Aj, 21.10.-k, Nuclear and High Energy Physics, NUCLEAR STRUCTURE, Nuclear Theory, Nuclear structure, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Nuclear matter, 238U, Superfluidity, nuclide identification by high-resolution magnetic spectrometer, complex even-odd structure in nuclide production, Nuclear fission, Excited state, Phase (matter), production yields of light residues, Ti, Atomic physics, Nuclear Experiment, Excitation, Ebeam=1A GeV
Abstract

Complex structural effects in the nuclide production from the projectile fragmentation of 1 A GeV 238 U nuclei in a titanium target, manifested as an even-odd effect, are reported. The structure seems to be insensitive to the excitation energy induced in the reaction. This is in contrast to the prominent structural features found in nuclear fission and in transfer reactions, which gradually disappear with increasing excitation energy. Most of the features of the results are reproduced using the statistical model of nuclear reactions, treating the pairing correlations in a consistent way both in the masses and in the level densities. The structures appear as the result of the condensation process of heated nuclear matter while cooling down in the evaporation process. As such, it can be considered a manifestation of the passage from the normal liquid phase of the nucleus to its superfluid phase.

Published
2005
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12. Studying of hypernuclei with nuclotron beams

Author

Averyanov, A. V., Avramenko, S. A., Aksinenko, V. D., Anikina, M. Kh., Bazylev, S. N., Balandin, V. P., Batusov, Yu. A., Belikov, Yu. A., Borzunov, Yu. T., Borodina, O. V., Golokhvastov, A. I., Golovanov, L. B., Granja, C., Ivanov, A. B., Ivanov, Yu. L., Isupov, A. Yu., Kohout, Z., Korotkova, A. M., Litvinenko, A. G., Lukstiņš, J., Malakhov, A. I., Majling, L., Majlingova, O., Manyakov, P. K., Matyushin, V. T., Migulina, I. I., Nikolaevsky, G. P., Okhrimenko, O. B., Parfenov, A. N., Parfenova, N. G., Peresedov, V. F., Plyashkevich, S. N., Pospišil, S., Rukoyatkin, P. A., Saitov, I. S., Salmin, R. A., Slepnev, V. M., Slepnev, I. V., Solar, M., Sopko, B., Sopko, V., Strokovsky, E. A., Tereshchenko, V. V., Feshchenko, A. A., Horazdovsky, T., Chren, D., Chencov, Yu. A., and Yudin, I. P.

Published
2008
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23. A cheap and compact mass spectrometer for radioactive ions based on a Wien filter

Author

M. G. Saint-Laurent, O. Tuske, Jean-Yves Pacquet, L. Maunoury, C. Pierret, Brassy, Chantal, Centre de recherche sur les Ions, les MAtériaux et la Photonique (CIMAP - UMR 6252), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS), Grand Accélérateur National d'Ions Lourds (GANIL), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Département d'Astrophysique, de physique des Particules, de physique Nucléaire et de l'Instrumentation Associée (DAPNIA), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche sur les Matériaux Avancés (IRMA), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Institut national des sciences appliquées Rouen Normandie (INSA Rouen Normandie), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Rouen Normandie (UNIROUEN), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), and Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Nuclear and High Energy Physics, [PHYS.PHYS.PHYS-ACC-PH]Physics [physics]/Physics [physics]/Accelerator Physics [physics.acc-ph], Mass spectrometer, 02 engineering and technology, Plasma sources, Mass spectrometry, 01 natural sciences, 7. Clean energy, Ion, 0103 physical sciences, Instrumentation, 010302 applied physics, Wien filter, Spectrometer, Chemistry, [PHYS.PHYS.PHYS-ACC-PH] Physics [physics]/Physics [physics]/Accelerator Physics [physics.acc-ph], 021001 nanoscience & nanotechnology, PACS: 07.77.Ka, 07.75.+h, 29.30.Aj, 41.85.Qg, Ion source, Beamline, Physics::Accelerator Physics, Radioactive beam, Atomic physics, 0210 nano-technology, Hybrid mass spectrometer
Abstract

International audience; This paper presents simulations of a mass spectrometer composed of one or two Wien filters. The ion source used is MONO1000 ECRIS. This ion source can produce singly charged ions with high efficiency, especially for gaseous materials. After extraction, the ions are mass selected and can be injected either into a beam line towards an experiment area or in an N+ charge booster. Due to its compactness and simplicity the proposed spectrometer is well adapted for preparing and analyzing radioactive beams. The simulations are based on the SIMION 3D [http://www.simion.com/] software.

Published
2008

24. Multinucleon transfer reactions in closed-shell nuclei

Author

F. Recchia, D. R. Napoli, C. A. Ur, M. D. Salsac, E. Farnea, J. J. Valiente-Dobón, P. J. R. Mason, S. M. Lenzi, R. Menegazzo, Suzana Szilner, A. Latina, E. Fioretto, B. Guiot, S. Lunardi, N. Marginean, G. Montagnoli, F. Scarlassara, L. Corradi, G. de Angelis, S. Beghini, F. Haas, G. Pollarolo, B. R. Behera, R. Marginean, F. Della Vedova, A. M. Stefanini, M. Nespolo, M. Romoli, I. V. Pokrovsky, A. Gadea, M. Trotta, Neven Soić, Département Recherches Subatomiques (DRS-IPHC), and Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS)

Subjects
Physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, Phonon, Gamma ray, Física, Coulomb barrier, FOS: Physical sciences, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Kinetic energy, 01 natural sciences, multinucleon transfer reactions, PRISMA+CLARA, 40Ca+96Zr and 90Zr+208Pb, grazing reactions, semiclasical models, Pairing, 0103 physical sciences, Gamma spectroscopy, Atomic physics, Nuclear Experiment (nucl-ex), 010306 general physics, Open shell, Nuclear Experiment, Excitation, 25.70.Hi, 29.30.Aj, 24.10.-i, 23.20.Lv
Abstract

Multinucleon transfer reactions in 40Ca+96Zr and 90Zr+208Pb have been measured at energies close to the Coulomb barrier in a high resolution gamma-particle coincidence experiment. The large solid angle magnetic spectrometer PRISMA coupled to the CLARA gamma-array has been employed. Trajectory reconstruction has been applied for the complete identification of transfer products. Mass and charge yields, total kinetic energy losses, gamma transitions of the binary reaction partners, and comparison of data with semiclassical calculations are reported. Specific transitions in 95Zr populated in one particle transfer channels are discussed in terms of particle-phonon couplings. The gamma decays from states in 42Ca in the excitation energy region expected from pairing vibrations are also observed., Comment: 10 pages, 9 figures

Published
2007

25. High precision mass measurements of 29-33Mg and the shell-opening effect at N=20

Author

Lunney, David, Audi, Georges, De Saintsimon, Michel, Gaulard, Carole, Thibault, Catherine, Vieira, Nelson, Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (CSNSM), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), and ISOLDE

Subjects
21.10.Dr, 27.30.+t, 29.30.Aj, Binding energies and masses 20 \leq A \leq 38 nuclides charged particle spectrometers: electric and magnetic, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]
Abstract

submitted to EPJ A (11-OCT-2004); High precision mass measurements have been performed on the exotic magnesium isotopes 29-33Mg using the MISTRAL radiofrequency spectrometer, especially suited to very short-lived nuclides. This method, combined with the powerful tool of resonant laser ionization at ISOLDE, has provided a significant reduction of uncertainty for the masses of the most exotic Mg isotopes: a relative error of 7X10-7 was achieved for the weakly produced 33Mg that has a half-life of only 90 ms. Moreover, the mass of 33Mg is found to change by over 250 keV. Verifying and minimizing binding energy uncertainties in this region of the nuclear chart is important for understanding the phenomenon of shell opening: the lack of binding energy that is normally associated with magic numbers.

Published
2006
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26. Evaporation residues produced in spallation of 208Pb by protons at 500 MeV

Author

AUDOUIN, L., TASSAN-GOT, L., ARMBRUSTER, P., BENLLIURE, J., BERNAS, M., BOUDARD, A., CASAREJOS, E., CZAJKOWSKI, S., ENQVIST, T., FERNÁNDEZ-DOMÍNGUEZ, B., JURADO, B., LEGRAIN, R., CROSS, Maltese, LERAY, S., MUSTAPHA, B., PEREIRA, J., PRAVIKOFF, M., REJMUND, F., RICCIARDI, M.-V., SCHMIDT, K.-H., STÉPHAN, C., TAIEB, J., VOLANT, C., WLAZ&#322O, W., Institut de Physique Nucléaire d'Orsay (IPNO), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Helmholtz zentrum für Schwerionenforschung GmbH (GSI)

Subjects
Evaporation residues, Isotopic production cross sections, Spallation reactions, FOS: Physical sciences, Accelerator-driven system, Charge-pickup cross sections, 25.40.Sc, 25.40.Kv, 28.50.Ft, 29.30.Aj, 29.40.Cs, 34.50.Bw, Nuclear Experiment (nucl-ex), [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Nuclear Experiment, Multiple reactions in target
Abstract

PACS; The production cross sections of fragmentation–evaporation residues in the reaction Pb+p at Click to view the MathML source have been measured using the inverse-kinematics method and the FRS spectrometer (GSI). Fragments were identified in nuclear charge using ionisation chambers. The mass identification was performed event-by-event using the Bρ–TOF–ΔE technique. Although partially-unresolved ionic charge states induced an ambiguity on the mass of some heavy fragments, production rates could be obtained with a high accuracy by systematically accounting for the polluting ionic charge states. The contribution of multiple reactions in the target was subtracted using a new, partly self-consistent code. The isobaric distributions are found to have a shape very close to the one observed in experiments at higher energy. Kinematic properties of the fragments were also measured. The total and the isotopic cross sections, including charge-pickup cross sections, are in good agreement with previous measurements and models. The data are discussed in the light of previous spallation measurements, especially on lead at 1 GeV.

Published
2006
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27. The upgraded D0 detector

Author

Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, D.L., Adams, M., Adams, T., Agelou, M., Agram, J.L., Ahmed, S.N., Ahn, S.H., Ahsan, M., Alexeev, G.D., Alkhazov, G., Alton, A., Alverson, G., Alves, G.A., Anastasoaie, M., Andeen, T., Anderson, J.T., Anderson, S., Andrieu, B., Angstadt, R., Anosov, V., Arnoud, Y., Arov, M., Askew, A., Asman, B., Assis Jesus, A.C.S., Atramentov, O., Autermann, C., Avila, C., Babukhadia, L., Bacon, T.C., Badaud, F., Baden, A., Baffioni, S., Bagby, L., Baldin, B., Balm, P.W., Banerjee, P., Banerjee, S., Barberis, E., Bardon, O., Barg, W., Bargassa, P., Baringer, P., Barnes, C., Barreto, J., Bartlett, J.F., Bassler, U., Bhattacharjee, M., Baturitsky, M.A., Bauer, D., A. Bean, A., Baumbaugh, B., S. Beauceron, B., Begalli, M., Beaudette, F., Begel, M., Bellavance, A., Beri, S.B., G. Bernardi, A., Bernhard, R., Bertram, I., Besançon, M., Besson, A., Beuselinck, R., Beutel, D., Bezzubov, V.A., Bhat, P.C., Bhatnagar, V., M. Binder, A., Biscarat, C., Bishoff, A., Black, K.M., Blackler, I., Blazey, G., Blekman, F., Blessing, S., Bloch, D., Blumenschein, U., Bockenthein, E., Bodyagin, V., Boehnlein, A., Boeriu, O., T.A. Bolton, B., Bonamy, P., Bonifas, D., Borcherding, F., Borissov, G., Bos, K., Bose, T., Boswell, C., Bowden, M., Brandt, A., Briskin, G., Brock, R., Brooijmans, G., Bross, A., Buchanan, N.J., Buchholz, D., Buehler, M., Buescher, V., Burdin, S., Burke, S., Burnett, T.H., Busato, Emmanuel, Buszello, C.P., Butler, D., Butler, J.M., Cammin, J., Caron, S., Bystricky, J., Canal, L., Canelli, F., Carvalho, W., Casey, B.C.K., Casey, D., Cason, N.M., H. Castilla-Valdez, B., Chakrabarti, S., Chakraborty, D., Chan, K.M., Chandra, A., Chapin, D., Charles, F., Cheu, E., Chevalier, L., Chi, E., Chiche, R., Cho, D.K., Choate, R., Choi, S., Choudhary, B., Chopra, S., Christenson, J.H., Christiansen, T., Christofek, L., Churin, I., Cisko, G., Claes, D., Clark, A.R., Clément, B., Clément, C., Coadou, Y., Colling, D.J., Coney, L., B. Connolly, B., Cooke, M., Cooper, W.E., Coppage, D., Corcoran, M., Coss, J., Cothenet, A., Cousinou, M.-C., Cox, B., Crépé-Renaudin, S., Cristetiu, M., Cummings, M.A.C., Cutts, D., da Motta, H., Das, M., Davies, B., Davies, G., Davis, G.A., Davis, W., De, K., de Jong, P., de Jong, S.J., de La Cruz-Burelo, E., de La Taille, C., de Oliveira Martins, C., Dean, S., Degenhardt, J.D., Déliot, F., Delsart, P.A., del Signore, K., Demaat, R., Demarteau, M., Demina, R., Demine, P., Denisov, D., Denisov, S.P., Desai, S., Diehl, H.T., Diesburg, M., Doets, M., Doidge, M., Dong, H., Doulas, S., Dudko, L.V., Duflot, L., Dugad, S.R., Duperrin, A., Dvornikov, O., J. Dyer, B., Dyshkant, A., Eads, M., Edmunds, D., Edwards, T., Ellison, J., Elmsheuser, J., Eltzroth, J.T., Elvira, V.D., Eno, S., Ermolov, P., Eroshin, O.V., Estrada, J., Evans, D., Evans, H., Evdokimov, A., Evdokimov, V.N., Fagan, J., Fast, J., Fatakia, S.N., Fein, D., Feligioni, L., Ferapontov, A.V., Ferbel, T., Ferreira, M.J., Fiedler, F., Filthaut, F., Fisher, W., Fisk, H.E., Fleck, I., Fitzpatrick, T., Flattum, E., Fleuret, F., Flores, R., Foglesong, J., Fortner, M., Fox, H., Franklin, C., Freeman, W., Fu, S., Fuess, S., Gadfort, T., Galea, C.F., Gallas, E., Galyaev, E., M. Gao, B., Garcia, C., Garcia-Bellido, A., Gardner, J., Gavrilov, V., Gay, A., Gay, Pascal, Gelé, D., Gelhaus, R., Genser, K., Gerber, C.E., Gershtein, Y., Gillberge, D., Ginther, G., Gobbi, B., Goldmann, K., Golling, T., Gollub, N., Golovtsov, V., G¸omez, B., Gomez, G., Gomez, R., Goodwin, R., Gornushkin, Y., Gounder, K., Goussiou, A., D. Graham, B., Graham, G., Grannis, P.D., Gray, K., Greder, S., Green, D.R., Green, J., Green, J.A., Greenlee, H., Greenwood, Z.D., Gregores, E.M., Grinstein, S., Gris, Ph., Grivaz, J.-F., Groer, L., Grunendahl, S., Grunewald, M.W., Gu, W., Guglielmo, J., Gupta, Anupam, Gurzhiev, S.N., Gutierrez, G., Gutierrez, P., Haas, A., Hadley, N.J., Haggard, E., Haggerty, H., Hagopian, S., Hall, I., Hall, R.E., Han, C., Han, L., Hance, R., Hanagaki, K., Hanlet, P., Hansen, Scott, Harder, K., Harel, A., Harrington, R., Hauptman, J.M., Hauser, R., Hays, C., Hays, J., Hazen, E., Hebbeker, T., Hebert, Christian, Hedin, D., Heinmiller, J.M., Heinson, A.P., Heintz, U., Hensel, C., Hesketh, G., Hildreth, M.D., R. Hirosky, B., Hobbs, J.D., Hoeneisen, B., Hohlfeld, M., Hong, S.J., Hooper, R., Hou, S., Houben, P., Hu, Y., Huang, J., Y. Huang, A., Hynek, V., Huffman, D., Iashvili, I., Illingworth, R., Ito, A.S., Jabeen, S., Jacquier, Y., Jaffré, M., Jain, S., Jain, V., Jakobs, K., Jayanti, R., Jenkins, A., Jesik, R., Jiang, Yuchao, Johns, K., Johnson, M., Johnson, P., Jonckheere, A., Jonsson, P., J¨ostlein, H., Jouravlev, N., Juarez, M., Juste, A., Kaan, A.P., Kado, M.M., K¨afer, D., Kahl, W., Kahn, S., Kajfasz, E., Kalinin, A.M., Kalk, J., Kalmani, S.D., Karmanov, D., Kasper, J., Katsanos, I., Kau, D., Kaur, R., Z. Ke, A., Kehoe, R., Kermiche, S., Kesisoglou, S., Khanov, A., Kharchilava, A., Kharzheev, Y.M., Kim, H., Kim, K.H., Kim, T.J., Kirsch, N., Klima, B., Klute, M., Kohli, J.M., J.-P. Konrath, A., Komissarov, E.V., Kopal, M., Korablev, V.M., Kostritski, A., Kotcher, J., Kothari, B., Kotwal, A.V., Koubarovsky, A., Kozelov, A.V., Kozminski, J., Kryemadhi, A., Kouznetsov, O., Krane, J., Kravchuk, N., Krempetz, K., Krider, J., Krishnaswamy, M.R., Krzywdzinski, S., Kubantsev, M., Kubinski, R., Kuchinsky, N., Kuleshov, S., Kulik, Y., Kumar, A., Kunori, S., Kupco, A., Kurca, T., Kvita, J., Kuznetsov, V.E., Kwarciany, R., Lager, S., Lahrichi, N., Landsberg, G., Larwill, M., Laurens, P., Lavigne, B., Lazoflores, J., Le Bihan, A.C., Le Meur, G., Lebrun, P., Lee, S.W., Lee, W.M., Leflat, A., Leggett, C., Lehner, F., Leitner, R., Leonidopoulos, C., Leveque, J., Lewis, P., Li, J., Li, Q.Z., Li, Xiaojian, Lima, J.G.R., Lincoln, D., Lindenmeyer, C., Linn, S.L., Linnemann, J., Lipaev, V.V., Lipton, R., Litmaath, M., Lizarazo, J., Lobo, L., Lobodenko, A., Lokajicek, M., Lounis, A., Love, P., Lu, J., Lubatti, H.J., Lucotte, A., Lueking, L., Luo, C., M. Lynker, A., A.L. Lyon, B., Machado, E., Maciel, A.K.A., Madaras, R.J., M¨attig, P., Magass, C., Magerkurth, A., Magnan, A.M., Maity, M., Makovec, N., Mal, P.K., Malbouisson, H.B., Malik, S., Malyshev, V.L., Manakov, V., Mao, H.S., Maravin, Y., Markley, D., Markus, M., Marshall, T., M. Martens, A., Martin, M., Martin-Chassard, G., Mattingly, S.E.K., Matulik, M., Mayorov, A.A., Mccarthy, R., Mccroskey, R., Mckenna, M., Mcmahon, T., Meder, D., Melanson, H.L., Melnitchouk, A., Mendes, A., Mendoza, D., Mendoza, Luis, Meng, X., Merekov, Y.P., Merkin, M., Merritt, K.W., Meyer, A., Meyer, J., Michaut, M., Miao, C., Miettinen, H., Mihalcea, D., Mikhailov, V., Miller, D., Mitrevski, J., Molina, J., Mondal, N.K., Montgomery, H.E., Moore, R.W., Moulik, T., Muanza, G.-S., Mostafa, M., Moua, S., Mokhov, N., Mulders, M., Mundim, L., Mutaf, Y.D., Nagaraj, P., Nagy, E., Naimuddin, M., Nang, F., Narain, M., Narasimhan, V.S., Narayanan, A., Naumann, N.A., Neal, H.A., Negret, J.P., Nelson, S., Neuenschwander, R.T., Neustroev, P., Noeding, C., Nomerotski, A., Novaes, S.F., Nozdrin, A., Nunnemann, T., Nurczyk, A., Nurse, E., O'Dell, V., O'Neil, D.C., Oguri, V., Olis, D., Oliveira, N., Olivier, B., Olsen, J., Oshima, N., Oshinowo, B.O., Otero y Garz¸on, G.J., Padley, P., Papageorgiou, K., Parashar, N., Park, J., Park, S.K., Parsons, J., Partridge, R., Parua, N., Patwa, A., Pawloski, G., Perea, P.M., Perez, Emile, Peters, O., P¸etroff, P., Petteni, M., Phaf, L., Piegaia, R., Pleier, M.-A., Podesta-Lerma, P.L.M., Podstavkov, V.M., Pogorelov, Y., M.-E. Pol, B., Pompo&#711s, A., Polosov, P., Pope, B.G., Popkov, E., Porokhovoy, S., Prado da Silva, W.L., Pritchard, W., Prokhorov, I., Prosper, H.B., Protopopescu, S., Przybycien, M.B., Qian, J., Quadt, A., Quinn, B., Ramberg, E., Ramirez-Gomez, R., Rani, K.J., Ranjan, K., Rao, M.V.S., Rapidis, P.A., Rapisarda, S., Raskowski, J., Ratoff, P.N., Ray, R.E., Reay, N.W., Rechenmacher, R., Reddy, L.V., Regan, T., Renardy, J.-F., Reucroft, S., Rha, J., Ridel, M., Rijssenbeek, M., Ripp-Baudot, I., Rizatdinova, F., Robinson, S., Rodrigues, R.F., Roco, M., Rotolo, C., Royon, C., Rubinov, P., Ruchti, R., R. Rucinski, B., Rud, V.I., Russakovich, N., Russo, P., Sabirov, B., Sajot, G., S¸anchez-Hern¸andez, A., Sanders, M.P., Santoro, A., Satyanarayana, B., Savage, G., Sawyer, L., Scanlon, T., Schaile, D., Schamberger, R.D., Scheglov, Y., Schellman, H., Schieferdecker, P., Schmitt, C., Schwanenberger, C., Schukin, A.A., Schwartzman, A., Schwienhorst, R., Sengupta, S., Severini, H., Shabalina, E., Shamim, M., Shankar, H.C., Shary, V., Shchukin, A.A., Sheahan, P., Shephard, W.D., R.K. Shivpuri, B., Shishkin, A.A., Shpakov, D., Shupe, M., Sidwell, R.A., Simak, V., Sirotenko, V., Skow, D., Skubic, P., Slattery, P., Smith, D.E., Smith, R.P., Smolek, K., Snow, G.R., Snow, J., Snyder, S., S¨oldner-Rembold, S., Song, X., Song, Y., Sonnenschein, L., Sopczak, A., Sor¸&#305n, V., Sosebee, M., Soustruznik, K., Souza, M., Spartana, N., Spurlock, B., Stanton, N.R., Stark, J., Steele, J., Stefanik, A., Steinberg, J., Steinbr¨uck, G., Stevenson, K., V. Stolin, A., Stone, A., Stoyanova, D.A., Strandberg, J., Strang, M.A., Strauss, M., Str¨ohmer, R., Strom, D., Strovink, M., Stutte, L., Sumowidagdo, S., Sznajder, A., Talby, M., Tentindo-Repond, S., Tamburello, P., Taylor, W., Telford, P., Temple, J., Terentyev, N., Teterin, V., Thomas, E., Thompson, J., Thooris, B., Titov, M., Toback, D., Tokmenin, V.V., Tolian, C., Tomoto, M., Tompkins, D., Toole, T., Torborg, J., Touze, F., Towers, S., Trefzger, T., Trincaz-Duvoid, S., Trippe, T.G., Tsybychev, D., Tuchming, B., Tully, C., Turcot, A.S., Tuts, P.M., Utes, M., Uvarov, L., Uvarov, S., Uzunyan, S., Vachon, B., van den Berg, P.J., van Gemmeren, P., van Kooten, R., W.M. van Leeuwen, A., Varelas, N., Varnes, E.W., Vartapetian, A., Vasilyev, I.A., Vaupel, M., Vaz, M., Verdier, P., Vertogradov, L.S., Verzocchi, M., Vigneault, M., Villeneuve-Seguier, F., Vishwanath, P.R., Vlimant, J.-R., von Toerne, E., Vorobyov, A., Vreeswijk, M., Vu Anh, T., Vysotsky, V., H.D. Wahl, C., Walker, R., Wallace, N., Wang, L., Wang, Z.-M., Warchol, J., Warsinsky, M., Watts, G., Wayne, M., M. Weber, B., Weerts, H., Wegner, M., Wermes, N., Wetstein, M., White, A., White, V., Whiteson, D., Wicke, D., Wijnen, T., Wijngaarden, D.A., Wilcer, N., Willutzki, H., Wilson, G.W., Wimpenny, S.J., Wittlin, J., Wlodek, T., Wobisch, M., Womersley, J., Wood, D.R., Wyatt, T.R., Wu, Z., Xie, Y., Xu, Q., Xuan, N., S. Yacoob, B., Yamada, R., Yan, M., Yarema, R., Yasuda, T., Yatsunenko, Y.A., Yen, Y., Yip, K., Yoo, H.D., Yoffe, F., Youn, S.W., Yu, J., Yurkewicz, A., Zabi, A., Zanabria, M., Zatserklyaniy, A., Zdrazil, M., Zeitnitz, C., Zhang, B., Zhang, D., Zhang, X., Zhao, T., Zhao, Z., Zheng, H., B. Zhou, B., Zhou, B., Zhu, J., Zielinski, M., Zieminska, D., A. Zieminski, A., R. Zitoun, A., Zmuda, T., Zutshi, V., Zviagintsev, S., Zverev, E.G., Zylberstejnr, A., Geurkov, G., Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Corpusculaire - Clermont-Ferrand (LPC), Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), D0, Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), and Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Aix Marseille Université (AMU)

Subjects
D0, Physics - Instrumentation and Detectors, 29.30.Aj, 29.40.Mc, 29.40.Vj, 29.40.Gx, Physics::Instrumentation and Detectors, Fermilab, DZero, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], FOS: Physical sciences, Physics::Accelerator Physics, High Energy Physics::Experiment, Instrumentation and Detectors (physics.ins-det), [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], Tevatron Run II
Abstract

The D0 experiment enjoyed a very successful data-collection run at the Fermilab Tevatron collider between 1992 and 1996. Since then, the detector has been upgraded to take advantage of improvements to the Tevatron and to enhance its physics capabilities. We describe the new elements of the detector, including the silicon microstrip tracker, central fiber tracker, solenoidal magnet, preshower detectors, forward muon detector, and forward proton detector. The uranium/liquid-argon calorimeters and central muon detector, remaining from Run I, are discussed briefly. We also present the associated electronics, triggering, and data acquisition systems, along with the design and implementation of software specific to D0., Submitted to Nucl. Instrum. Methods A. 142 pages, 77 figures. Version with high resolution figures is available at http://www-d0.fnal.gov/www_buffer/pub/pub_283.ps

Published
2006
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28. Mass measurements of the shortest-lived nuclides à la MISTRAL

Author

C. Gaulard, C. Thibault, G. Audi, M. de Saint Simon, N. Vieira, D. Lunney, Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (CSNSM), and Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11)

Subjects
Physics, Wigner energy, Large Hadron Collider, Mass excess, Spectrometer, 010308 nuclear & particles physics, Atomic masses, 21.10.Dr, 27.50.+e, 29.30.Aj, Nuclear binding energy, N=Z nuclides, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Condensed Matter Physics, 01 natural sciences, ISOLTRAP, Atomic mass, Nuclear physics, 0103 physical sciences, RF mass spectrometer, Nuclide, Physical and Theoretical Chemistry, Wigner effect, 010306 general physics, Instrumentation, Spectroscopy
Abstract

Dedicated to H.-J. Kluge on the occasion of his 65th birthday anniversary - Jürgen Kluge Special Issue; At Princeton in the 1960's, L.G. Smith invented an instrument of astonishing accuracy and rapid measurement time, derived from his so-called mass synchrometer. Using the same principle, a radiofrequency spectrometer was constructed in Orsay to measure masses of the shortest-lived nuclides at Cern's Isolde facility. Smith's spectrometer is now a museum piece, making the Orsay version (since baptized, MISTRAL) the sole example of such an instrument and the only one ever to be used on-line. Here we report on a measurement of the 65 ms half-life, N=Z nuclide $^{74}Rb$ performed with MISTRAL. The measured mass excess of -51944(117) keV is compared with that obtained by ISOLTRAP, since independent measurements using different techniques assure a healthy gene pool for the recommended masses of the atomic mass evaluation. The nuclide $^{74}Rb$ is the heaviest for which a precise mass is of importance for the so-called Wigner energy. A discussion is presented concerning this Wigner energy, perhaps the last component of nuclear mass formulas resisting microscopic treatment.

Published
2006
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29. A new expression for the resolution of a uniform magnetic field analyser

Author

Evelyne Cottereau-Larson, Robert Meunier, Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (CSNSM), and Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11)

Subjects
Physics, Nuclear and High Energy Physics, Beam diameter, Ion beam, 010308 nuclear & particles physics, business.industry, High Energy Physics::Phenomenology, Analyser, 01 natural sciences, Magnetic field, 41.85.Lc, 41.85.Ja, 29.30.Aj, Magnetic analyser, Optics, Amplitude, Deflection (physics), 0103 physical sciences, Physics::Accelerator Physics, Thermal emittance, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], Resolution, 010306 general physics, business, Instrumentation, Computer Science::Databases
Abstract

The resolving power is characteristic of the quality of the analysis of an ion beam in a magnetic sector; it can be expressed as function of the angle of deflection of the sector, of the position and the amplitude of the maximum radial extension of the beam in the sector and of its emittance. An optimum configuration can be deduced, defined by a symmetry of the beam in the sector with respect to the half-angle of the deflection.

Published
1997
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30. First measurement of the $\pi^+\pi^-$ atom lifetime

Author

Adeva, B., Afanasyev, L., Benayoun, M., Benelli, A., Berka, Z., Brekhovskikh, V., Caragheorgheopol, G., Cechak, T., Chiba, M., Constantinescu, S., Detraz, C., Dreossi, D., Drijard, D., Dudarev, A., Evangelou, I., Ferro-Luzzi, M., Gallas, M.V., Gerndt, J., Giacomich, R., Gianotti, P., Goldin, D., Gómez, F., Gorin, A., Gorchakov, O., Guaraldo, C., Hansroul, M., Hosek, R., Iliescu, M., Karpukhin, V., Kluson, J., Kobayashi, M., Kokkas, P., Komarov, V., Kruglov, V., Kruglova, L., Kulikov, A., Kuptsov, A., Kurochkin, I., Kuroda, K.-I., Lamberto, A., Lanaro, A., Lapshin, V., Lednicky, R., Leruste, P., Levi Sandri, P., Lopez Aguera, A., Lucherini, V., Maki, T., Manthos, N., Manuilov, I., Montanet, L., Narjoux, J.-L., Nemenov, L., Nikitin, M., Núñez Pardo, T., Okada, K., Olchevskii, V., Pazos, A., Pentia, M., Penzo, A., Perreau, J.-M., Petrascu, C., Pló, M., Ponta, T., Pop, D., Rappazzo, G.F., Rodriguez Fernandez, A., Romero, A., Ryazantsev, A., Rykalin, V., Santamarina, C., Saborido, J., Schacher, J., Schuetz, Ch.P., Sidorov, A., Smolik, J., Takeutchi, F., Tarasov, A., Tauscher, L., Tobar, M.J., Trusov, S., Utkin, V., Vázquez Doce, O., Vázquez, P., Vlachos, S., Yazkov, V., Yoshimura, Y., Zhabitsky, M., Zrelov, P., Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Horia Hulubei National Institute of Physics and Nuclear Engineering (NIPNE), IFIN-HH, European Organization for Nuclear Research (CERN), Istituto Nazionale di Fisica Nucleare, Sezione di Trieste (INFN, Sezione di Trieste), Istituto Nazionale di Fisica Nucleare (INFN), Laboratori Nazionali di Frascati (LNF), and DIRAC

Subjects
pi(-) mesons, formalism, DIRAC experiment, scattering, Pion scattering, pionium, excitation, elementary atom, pionium atom, matter, High Energy Physics - Experiment, pion scattering, Elementary atom, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Pionium atom, spectrometer, 36.10.-k, 32.70.Cs, 25.80.E, 25.80.Gn, 29.30.Aj, dirac experiment, cross-sections, relativistic elementary atoms, energy
Abstract

The goal of the DIRAC experiment at CERN (PS212) is to measure the $\pi^+\pi^-$ atom lifetime with 10% precision. Such a measurement would yield a precision of 5% on the value of the $S$-wave $\pi\pi$ scattering lengths combination $|a_0-a_2|$. Based on part of the collected data we present a first result on the lifetime, $\tau=[2.91 ^{+0.49}_{-0.62}]\times 10^{-15}$ s, and discuss the major systematic errors. This lifetime corresponds to $|a_0-a_2|=0.264 ^{+0.033}_{-0.020} m_{\pi}^{-1}$., Comment: 18 pages, 6 figures

Published
2005
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31. Absolute calibration for a broad range single shot electron spectrometer

Author

J.-P. Larbre, V. De Waele, H. Monard, Victor Malka, Y. Glinec, Mehran Mostafavi, Jérôme Faure, Jean-Louis Marignier, A. Guemnie-Tafo, Laboratoire d'optique appliquée (LOA), École Nationale Supérieure de Techniques Avancées (ENSTA Paris)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Chimie Physique D'Orsay (LCPO), and Université Paris-Sud - Paris 11 (UP11)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Electron spectrometer, plasma light propagation, electron accelerators, PACS 07.81.+a, 07.77.Ka, 29.30.Aj, 29.30.Ep, 29.20.-c, 52.38.Ph, 52.38.Kd, Electron, 01 natural sciences, Electromagnetic radiation, Electron spectroscopy, electron beams, 010305 fluids & plasmas, law.invention, Optics, law, 0103 physical sciences, particle beam diagnostics, plasma accelerators, 010306 general physics, Instrumentation, electron spectrometers, Physics, [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], Spectrometer, business.industry, Particle accelerator, calibration, Picosecond, Measuring instrument, Physics::Accelerator Physics, [PHYS.PHYS.PHYS-CHEM-PH]Physics [physics]/Physics [physics]/Chemical Physics [physics.chem-ph], business
Abstract

International audience; This article gives a detailed description of a single shot electron spectrometer which was used to characterize electron beams produced by laser-plasma interaction. Contrary to conventional electron sources, electron beams from laser-plasma accelerators can produce a broad range of energies. Therefore, diagnosing these electron spectra requires specific attention and experimental development. Here, we provide an absolute calibration of the Lanex Kodak Fine screen on a laser-triggered radio frequency picosecond electron accelerator. The efficiency of scintillating screens irradiated by electron beams has never been investigated so far. This absolute calibration is then compared to charge measurements from an integrating current transformer for quasimonoenergetic electron spectra from laser-plasma interaction.

Published
2006
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