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Start Over Author "Bauer P." Journal ieee transactions on applied superconductivity
144 results on '"Bauer P."'

3. Results of HTS Current Lead Series Manufacturing for ITER

Author

Kaverin, D., primary, Bauer, P., additional, Gung, C-Y., additional, Han, Q., additional, Kun, L., additional, Liu, C., additional, Ran, Q., additional, Shu, D., additional, He, X., additional, Dong, Y., additional, Liu, X., additional, Yu, A., additional, and Niu, E., additional

Published
2024
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4. AC Losses Calculations for the ITER Correction Coils During Plasma Operation

Author

Bauer, P., Breschi, M., Cavallucci, L., Duchateau, J. L., Simon, F., Torre, A., and Turck, B.

Abstract

While the ITER magnet system assembly is progressing, models are being developed to predict the performances of the coils in preparation of the ITER magnet commissioning and operation. In particular, the AC losses generated in the conductors during a plasma scenario need to be estimated in order to predict the magnet thermo-hydraulic performances. The largest AC losses during plasma operation are expected in the CS (Central Solenoid) and PF (Poloidal Field) coils and the respective AC loss estimations were previously published (P. Bauer et al. 2023). This paper discusses the results of simulations of AC losses in the ITER Correction Coils (CC) during the long ITER plasma pulse. These calculations take into account the electromagnetic screening by the ITER passive structures, most importantly the vacuum vessel, showing its impact on the AC losses. The results are also compared to earlier predictions.

Published
2024
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6. Coupling and Hysteresis Loss Measurements on the ITER CS Module #4

Author

Breschi, M., Cavallucci, L., Bauer, P., Vostner, A., Bonifetto, R., Zappatore, A., Zanino, R., and Martovetsky, N.

Abstract

The fourth CS Module (CSM#4) of the ITER Central Solenoid was tested in November/December 2022 at the premises of General Atomics, Poway, US. During the measurement campaign, the CSM#4 was submitted to dumps of the transport current from different initial values (from 0 to 40 kA) to 0 kA. The tests were performed both in virgin conditions and after 10 slow current cycles. This work analyses the experimental dumps of the CSM#4 to determine the losses in the CICC via the measurement of the energy deposited in the supercritical helium. The losses in the magnet are presented pointing out the impact of the slow current cycles. The latter also allow one measuring the hysteresis losses of the magnet. In the previous module tests, as well as in the tests of a single layer solenoid (referred to as CS Insert), it was very difficult to retrieve reliable values of the hysteresis losses in the CS conductor. However, the knowledge of hysteresis losses is crucial for a correct heat inventory of the magnet in operation. This study reports the results of their measurement, which represents a relevant added value of the CSM#4 tests. Finally, the experimental data are compared with the results of analytical models developed for the loss computation.

Published
2024
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7. A Study on Quench Detection for Cable-in-Conduit Conductors With Co-Wound Tapes

Author

Colombo, Gabriele, Bauer, Pierre, Breschi, Marco, and Martovetsky, Nicolai

Abstract

The primary Quench Detection System (QDS) of the Central Solenoid (CS) of the ITER magnet system must be able to distinguish the resistive component of the voltage, arising during quench, from the inductive one due to time-varying magnetic fluxes. This task is especially challenging for the six modules composing the CS (CSMs), with a coil self-inductance of the order of ∼1 H, subjected to current ramps up to ∼10 kA/s. Each CSM is equipped with stainless-steel tapes wrapped around the outer conduit of the conductor, referred to as Co-Wound Tapes (CWTs), linked to a magnetic flux approximating the one linked to the conductor itself. This work focuses on the definition of a model able to compute the voltages measured by the QDS with the high precision required. The analysis is based on a 2D axisymmetric FEM model of the entire CSM in a stand-alone configuration. A novel 3D approach based on an integral computation method allows one to account for the twisting of the conductor sub-cables of the last cabling stage (petals). The model is applied to quantify the impact of three main error sources contributing to the residual voltage signal measured by the QDS: the difference in self-field flux linked to the conductor and to the CWT, the inhomogeneity of the background field and the twisting of the petals.

Published
2024
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11. AC Losses in the Second Module of the ITER Central Solenoid

Author

Breschi, M., primary, Cavallucci, L., additional, Bauer, P., additional, Gauthier, F., additional, Bonifetto, R., additional, Zappatore, A., additional, Zanino, R., additional, Martovetsky, N., additional, Khumthong, K., additional, Ortiz, E., additional, and Sheeron, J., additional

Published
2022
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13. AC Losses Calculations for the ITER CS and PF Magnet Systems During Plasma Operation

Author

Bauer, Pierre, Breschi, Marco, Cavallucci, Lorenzo, Duchateau, Jean-Luc, Gauthier, Florent, Ilyin, Yury, Schild, Thierry, Torre, Alexandre, and Turck, Bernard

Abstract

While the ITER magnet system assembly is progressing, models are being developed to predict the performances of the coils in support of the preparation of commissioning and operation. In particular, the AC losses generated in the coils during a plasma scenario need to be estimated as input to thermo-hydraulic performance simulations. The largest AC losses during plasma operation are expected in the CS and PF coils. This paper discusses the results of simulations of AC losses in these coils during a representative ITER plasma pulse. These calculations also take into account the electromagnetic screening provided by the ITER passive structures, most importantly the vacuum vessel, discussing its impact on the conductor AC losses. The results will also be compared to earlier predictions. Finally, the CS and PF coil AC losses expected during commissioning will be briefly discussed.

Published
2023
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14. Test results of 52/68 kA trial HTS current leads for ITER

Author

Bauer, P., Bi, Y., Cheng, A., Cheng, Y., Devred, A., Ding, K., Huang, X., Liu, C., Lin, X., Mitchell, N., Sahu, A., Shen, G., Song, Y., Wang, Z., Zhang, H., Yu, J., and Zhou, T.

Subjects
High temperature superconductors -- Design and construction, Superconducting magnets -- Testing, Technical institutes -- Management, Company business management, Business, Electronics, Electronics and electrical industries, International Thermonuclear Experimental Reactor -- Management
Published
2010

15. Design of the ITER TF magnet feeder systems

Author

Song, Y., Bauer, P., Bi, Y., Chen, Y., Cheng, Y., Devred, A., Rodriguez-Mateos, F., Ding, K., Huang, X., Lu, K., Mitchell, N., Sahu, A., Shen, G., Wang, Z., and Zhou, T.

Subjects
Barium compounds -- Magnetic properties, Barium compounds -- Electric properties, Barium compounds -- Thermal properties, Copper oxide superconductors -- Magnetic properties, Copper oxide superconductors -- Electric properties, Copper oxide superconductors -- Thermal properties, Nuclear reactors -- Design and construction, Superconductive devices -- Design and construction, Technical institutes -- Management, Yttrium -- Magnetic properties, Yttrium -- Electric properties, Yttrium -- Thermal properties, Company business management, Business, Electronics, Electronics and electrical industries, International Thermonuclear Experimental Reactor -- Management
Published
2010

16. Development of the coil terminal boxes for the ITER magnet feeder systems

Author

Sahu, A.K., Bauer, P., Bi, Y., Chen, Y., Cheng, Y., Devred, A., Ding, K., Huang, X., Liu, S., Lu, K., Mitchell, N., Peng, Y., Shen, G., Song, Y., Wang, Z., and Zhou, T.

Subjects
Liquid helium -- Usage, Niobium -- Magnetic properties, Niobium -- Thermal properties, Niobium -- Electric properties, Superconducting magnets -- Design and construction, Technical institutes -- Management, Titanium alloys -- Magnetic properties, Titanium alloys -- Electric properties, Titanium alloys -- Thermal properties, Company business management, Business, Electronics, Electronics and electrical industries, International Thermonuclear Experimental Reactor -- Management
Published
2010

17. Design proposal for the ITER feeder busbars

Author

Calvi, M., Bauer, P., Bessette, D., Cau, F., Marinucci, C., and Bruzzone, P.

Subjects
Niobium -- Magnetic properties, Niobium -- Electric properties, Nuclear reactors -- Design and construction, Superconducting magnets -- Design and construction, Technical institutes -- Management, Titanium -- Magnetic properties, Titanium -- Electric properties, Company business management, Business, Electronics, Electronics and electrical industries, International Thermonuclear Experimental Reactor -- Management
Published
2010

18. Overview of the ITER correction coils design

Author

Foussat, A., Libeyre, P., Mitchell, N., Gribov, Y., Jong, C.T.J., Bessette, D., Gallix, R., Bauer, P., and Sahu, A.

Subjects
Electrical conduits -- Usage, Fatigue testing machines -- Analysis, Niobium -- Magnetic properties, Niobium -- Electric properties, Nuclear reactors -- Design and construction, Superconducting magnets -- Mechanical properties, Superconducting magnets -- Design and construction, Technical institutes -- Management, Titanium alloys -- Magnetic properties, Titanium alloys -- Electric properties, Materials -- Fatigue, Materials -- Analysis, Company business management, Business, Electronics, Electronics and electrical industries, International Thermonuclear Experimental Reactor -- Management
Published
2010

19. R&D towards HTS current leads for ITER

Author

Bauer, P., Yanfang Bi, Anyi Cheng, Devred, A., Kaisong Ding, Xiongyi Huang, Kun Lu, Mitchell, N., Sahu, A.K., Guang Shen, Yuntao Song, and Tingzhi Zhou

Subjects
Bismuth -- Thermal properties, Bismuth -- Magnetic properties, Bismuth -- Electric properties, High temperature superconductors -- Usage, Liquid helium -- Usage, Nuclear reactors -- Design and construction, Business, Electronics, Electronics and electrical industries
Published
2009

20. Effect of different cutting techniques on the surface morphology and composition of niobium

Author

Cooper, C.A., Wu, A., Bauer, P., and Antoine, C.

Subjects
Electric discharges -- Evaluation, Electric discharges through gases -- Evaluation, Niobium -- Electric properties, Niobium -- Magnetic properties, Superconducting magnets -- Design and construction, Superconducting magnets -- Composition, Business, Electronics, Electronics and electrical industries
Published
2009

21. Development of the EFDA dipole high field conductor

Author

Vostner, A., Bauer, P., Wesche, R., Vetrella, U. Besi, Stepanov, B., della Corte, A., Portone, A., Salpietro, E., and Bruzzone, P.

Subjects
Magnetic fields -- Analysis, Niobium -- Magnetic properties, Niobium -- Thermal properties, Superconducting magnets -- Evaluation, Tin alloys -- Magnetic properties, Tin alloys -- Thermal properties, Business, Electronics, Electronics and electrical industries
Abstract

High-energy physics (HEP) type [Nb.sub.3]Sn strands with a [J.sub.c] ~ 2400 A/[mm.sup.2] are applied to a steel Cable-in-Conduit Conductors (CICC). The high-field (HF) conductor qualification process, the design modifications and the analysis of the test results are discussed.

Published
2008

22. The [Nb.sub.3]Sn option for the ITER PF6 coil

Author

Portone, A., Bauer, P., Salpietro, E., Vostner, A., and Lucas, J.

Subjects
Metals -- Quenching, Metals -- Analysis, Superconductors -- Thermal properties, Superconductors -- Magnetic properties, Tin alloys -- Magnetic properties, Tin alloys -- Electric properties, Niobium -- Magnetic properties, Niobium -- Electric properties, Business, Electronics, Electronics and electrical industries
Abstract

The Poloidal Field Coil 6 (PF6) coil design based on [Nb.sub.3]Sn superconductor, which has delivered the required temperature margin as well as the higher performance capability, is examined. The design analysis has discussed the performance parameters of the coil including the hot spot temperature and quench propagation.

Published
2008

23. Joint design for the EDIPO

Author

Di Zenobio, A., della Corte, A., Muzzi, L., Turtu, W., Bauer, P., Portone, A., Salpietro, E., Amend, J., and Theisen, E.

Subjects
Dipole moments -- Analysis, Electric resistance -- Analysis, Superconducting magnets -- Design and construction, Business, Electronics, Electronics and electrical industries
Abstract

A new joint design is developed and patented by ENEA in the framework of the EFDA dipole (EDIPO) activities. The analysis has shown a resistance < 0.5 n[omega], while the first trial of adapting it to the EDIPO realization needs have given a value 10 times higher.

Published
2008

24. Crystal orientations near welds in high RRR niobium with very large grains

Author

Baars, D., Jiang, H., Bieler, T., Compton, C., Bauer, P., and Grimm, T.

Subjects
Niobium -- Electric properties, Nucleation -- Analysis, Microstructure -- Research, Business, Electronics, Electronics and electrical industries
Abstract

Orientation imaging microscopy (OIM) was used for assessing the crystal orientations near weld in high residual resistivity ratio (RRR) niobium with very large grains. Results suggest the development of a solidification microstructure with random crystal orientations in the fusion zone during welding due to heterogeneous nucleation near a tri-crystal boundary.

Published
2007

25. Mechanical properties of high RRR niobium with different texture

Author

Jiang, H., Baars, D., Zamiri, A., Antonie, C., Bauer, P., Bieler, T.R., Pourboghrat, F., Compton, C., and Grimm, T.L.

Subjects
Niobium -- Electric properties, Niobium -- Mechanical properties, Polycrystalline semiconductors -- Electric properties, Polycrystalline semiconductors -- Mechanical properties, Anisotropy -- Analysis, Business, Electronics, Electronics and electrical industries
Abstract

The mechanical properties of high purity bulk niobium with different texture and grain size are examined. Findings reveal that the elongated and non-uniform grain size appears to have a stronger effect on formability.

Published
2007

26. Measurements of the persistent current decay and snapback effect in Tevatron dipole magnets

Author

Velev, G.V., Bauer, P., DiMarco, J., Hanft, R., Lamm, M., Schlabach, P., Sylvester, C., Tartaglia, M., and Tompkins, J.C.

Subjects
Analog to digital converters -- Usage, Magnetic fields -- Measurement, Superconducting magnets -- Usage, Business, Electronics, Electronics and electrical industries
Abstract

Fast Digital Signal Processor (DSP)-based Analog to Digital converter technology was used for performing a detailed program of magnetic measurements on twelve Tevatron dipoles. Results suggest the observation of relatively large decay with average amplitude of 0.45 [plusmn] 0.10 units and mean lifetime of 0.61 [plusmn] 0.06s in Tevatron dipoles after very short injections.

Published
2007

27. Effect of thermo-mechanical stress during quench on Nb[subscript 3]Sn cable performance

Author

Imbasciati, L., Bauer, P., Ambrosio, G., Lamm, M.J., Miller, J.R., Miller, G.E., and Ziobin, A.V.

Subjects
Superconducting magnets -- Research, Particle accelerators -- Research, Business, Electronics, Electronics and electrical industries
Abstract

Thermo-mechanical stress during quench on Nb[subscript 3]Sn cable performance is investigated and reported.

Published
2003

28. Fabrication and test of a racetrack magnet using pre-reacted Nb[subscript 3]Sn cable

Author

Ambrosio, G., Andreev, N., Barzi, E., Bauer, P., Bhashyam, R., Carcagno, R., Chichili, D., Ewald, K., Feher, S., Imbasciati, L., Limon, P., Lamm, M., Novitski, I., Orris, D., Pischalnikov, Y., Sylvester, C., Tartaglia, M., Tompkins, J., and Zlobin, A.V.

Subjects
Superconducting magnets -- Research, Business, Electronics, Electronics and electrical industries
Abstract

A racetrack magnet using pre-reacted Nb[subscript 3]Sn cable is fabricated and tested at Fermilab.

Published
2003

29. Conceptual design study of Nb[subscript 3]Sn low-beta quadrupoles for 2nd generation LHC IRs

Author

Zlobin, A.V., Ambrosio, G., Andreev, N., Barzi, E., Bauer, P., Chichili, D., Huang, Y., Imbasciati, L., Kashikhin, V.V., Lamm, M., Limon, P., Novitski, I., Peterson, T., Strait, J.B., Yadav, S., and Yamada, R.

Subjects
Particle accelerators -- Research, Superconducting magnets -- Research, Business, Electronics, Electronics and electrical industries
Abstract

Design of Nb[subscript 3]Sn low-beta quadrupoles for 2nd generation Large Hadron Collider (LHC) interaction regions (IR) is discussed.

Published
2003

30. Superconductor and cable R&D for high field accelerator magnets at Fermilab

Author

Barzi, E., Ambrosio, G., Andreev, N., Bauer, P., Chichili, D., Fratini, M., Elementi, L., Hoffman, J., Limon, P.J., Mattafirri, S., Rey, J.M., Yamada, R., and Zlobin, A.V.

Subjects
United States. Department of Energy. Fermi National Accelerator Laboratory -- Research, Superconducting magnets -- Research, Electrical equipment and supplies industry -- Research, Particle accelerators -- Research, Nuclear industry -- Research, Industrial equipment and supplies industry -- Research, Electrical engineering, Business, Electronics, Electronics and electrical industries, European Organization for Nuclear Research -- Conferences, meetings and seminars
Abstract

Results of Nb[subscript 3]Sn strand-and-cable R&D under way in the High Field Magnet proram at Fermilab are reported. Magnets for the Very Large Hadron Collider (VLHC) are being developed.

Published
2002

31. Quench performance and mechanical behavior of the first Fermilab-built prototype high gradient quadrupole for the LHC interaction regions

Author

Andreev, N., Arkan, T., Bauer, P., Bossert, R., Brandt, J., Carson, J., Caspi, S., Chichili, D.R., DiMarco, J., Feher, S., Ghosh, A., Glass, H., Kerby, J., Lamm, M.J., Makarov, A., McInturff, A.D., Nicol, T., Nobrega, A., Novitski, I., Orris, D., Peterson, T., Rabehl, R., Robotham, W., Scanlan, R., Schlabach, P., Sylvester, C., Strait, J., tartaglia, M., Tompkins, J.C., Velev, G., Yadav, S., and Zlobin, A.V.

Subjects
United States. Department of Energy. Fermi National Accelerator Laboratory -- Research, Superconducting magnets -- Research, Electrical equipment and supplies industry -- Research, Particle accelerators -- Research, Nuclear industry -- Research, Industrial equipment and supplies industry -- Research, Magnets -- Research, Electrical engineering, Business, Electronics, Electronics and electrical industries, European Organization for Nuclear Research -- Research
Abstract

Test results for a prototype quadrupole magnet, developed for the inner triplet Large Hadron Collider (LHC), are discussed. Quench performance indicates that the production procedure is well controlled and production tooling is adequate.

Published
2002

32. R&D for a single-layer Nb[subscript 3]Sn common coil dipole using the react-and-wind fabrication technique

Author

Ambrosio, G., Andreev, N., Barzi, E., Bauer, P., Chichili, D.R., Ewald, K., Feher, S., Imbasciati, L., Kashikhim, V.V., Limon, P.J., Litvinenko, L., Novitski, I., Rey, J.M., Scanlan, R.M., Yadav, S., Yamada, R., and Zlobin, A.V.

Subjects
United States. Department of Energy. Fermi National Accelerator Laboratory -- Research, Superconducting magnets -- Research, Electrical equipment and supplies industry -- Research, Magnetic dipoles -- Research, Particle accelerators -- Research, Nuclear industry -- Research, Industrial equipment and supplies industry -- Research, Electrical engineering, Business, Electronics, Electronics and electrical industries, European Organization for Nuclear Research -- Research
Abstract

Development of a single-layer common-coil magnet is being finalized at Fermilab. The magnet, which incorporates innovative design and technology features, is meant to be used in a future Very Large Hadron Collider.

Published
2002

33. The influence of accelerator physics on the magnet design of a very large hadron collider

Author

Bauer, P., Dietrich, M., Foster, G.W., Kashikhin, V.V., Limon, P.J., Shiltsev, V., and Solyak, N.

Subjects
Particle accelerators -- Research, Nuclear industry -- Research, Industrial equipment and supplies industry -- Research, Superconducting magnets -- Research, Electrical equipment and supplies industry -- Research, Electrical engineering, Business, Electronics, Electronics and electrical industries, European Organization for Nuclear Research -- Conferences, meetings and seminars
Abstract

The influence of accelerator physics on the design of magnets for very high-energy hadron colliders is discussed. Limiting specifications of a very large hadron collider (VLHC) model are estimated, and their effect on the design of accelerator magnets is examined.

Published
2002

34. Fabrication and testing of Rutherford-type cables for react and wind accelerator magnets

Author

Bauer, P., Ambrosio, G., Andreev, N., Barzi, E., Dietderich, D., Ewald, K., Fratini, M., Ghosh, A.K., Highley, H.C., Kim, S.W., Miller, G., Miller, J., Ozelis, J., and Scanlan, R.M.

Subjects
Magnets -- Research, Superconductors -- Research, Business, Electronics, Electronics and electrical industries
Abstract

Rutherford-type cables for react and wind accelerator magnets were fabricated and tested.

Published
2001

35. Design and mechanical analysis of a single-layer common coil dipole for VLHC

Author

Novitski, I., Andreev, N., Ambrosio, G., Bauer, P., Kashikhin, V.V., and Zlobin, A.V.

Subjects
Hadrons -- Usage, Magnetic dipoles -- Design and construction, Business, Electronics, Electronics and electrical industries
Abstract

The development of a T block-type common coil dipole magnet for a future Very Large Hadron Collider is discussed.

Published
2001

36. Development of react and wind common coil dipoles for VLHC

Author

Ambrosio G., Andreev, N., Barzi, E., Bauer, P., Chichili, D., Ewald, K., Imbasciati, L., Kashikhin, V., Kim, S.W., Limon, P., Novitski, I., Ozelis, J.P., Scanlan, R., Sabbi, G., and Zlobin, A.

Subjects
Hadrons -- Research, Superconducting magnets -- Research, Business, Electronics, Electronics and electrical industries
Abstract

React and wind common coil dipoles for VLHC hadron colliders are investigated.

Published
2001

37. Quench performance of Fermilab model magnets for the LHC inner triplet quadrupoles

Author

Tompkins, J.C.; Orris, D.; Feher, S.; Andreev, N., Velev, G.; Ozelis, J.P.; Ghosh, A.; Arkan, T., Yadav, S.; Peterson, T.; Glass, H.; Bauer, P., Zlobin, A.V.; Rabehl, R.; Kerby, J.; Bossert, R., Robotham, W.; Lamm, M.J.; Brandt, J., Scanlan, R.; Makarov, A.; Carson, J., Schlabach, P.; McInturff, A.D.; Caspi, S., Sylvester, C.; Nobrega, A.; Chichili, D.R., Strait, J.; Novitski, I.; Chiesa, L., and Tartaglia, M.; Ogitsu, T.; DiMarco, J.

Subjects
United States. Department of Energy. Fermi National Accelerator Laboratory -- Research, Superconducting magnets -- Research, Superconductivity -- Equipment and supplies, Business, Electronics, Electronics and electrical industries
Abstract

Research is presented describing the measurement of quenches in model magnets for the Large Hadron Collider (LHC) inner triplet quadrupoles, being developed and tested by the Fermi National Accelerator Laboratory. The model superconducting quadrupoles are 2m long with 70mm diameter bores.

Published
2001

38. Busbar studies for the LHC interaction region quadrupoles

Author

Bauer, P., Chiesa, L., Feher, S., Kerby, J., Lamm, M., Orris, D., Sylvester, C., Tompkins, J.C., and Zlobin, A.V.

Subjects
United States. Department of Energy. Fermi National Accelerator Laboratory -- Equipment and supplies, Bus conductors (Electricity) -- Research, Superconducting magnets -- Research, Superconductivity -- Equipment and supplies, Business, Electronics, Electronics and electrical industries, High Energy Acceleration Research Organization -- Equipment and supplies
Abstract

Research is presented describing studies conducted to find the most suitable busbar design for Large Hadron Collider (LHC) interaction region (IR) magnets. The Fermi National Accelerator Laboratory and the High Energy Acceleration Research Organization are developing the superconducting quadrupole magents for the LHC IR.

Published
2001

39. Quench protection of the LHC inner triplet quadrupoles built at Fermilab

Author

Tompkins, J.C.; Bauer, P., Zlobin, A.V.; Bossert, R., Chiesa, L., DiMarco, J., Feher, S., Lamm, M.J., McInturff, A.D., Nobrega, A., Orris, D., and Tartaglia, M.

Subjects
United States. Department of Energy. Fermi National Accelerator Laboratory -- Equipment and supplies, Metals -- Quenching, Superconducting magnets -- Research, Superconductivity -- Equipment and supplies, Business, Electronics, Electronics and electrical industries
Abstract

Research is presented describing quench protection in the Large Hadron Collider high gradient inner triplet quadrupoles being built as part of the US-LHC Accelerator project at the Fermi National Accelerator Laboratory. Eight two-meter model quadrupoles have been built and tested, and the results used to optimize heater performance.

Published
2001

40. Field quality in Fermilab-built models of quadrupole magnets for the LHC interaction region

Author

Tartaglia, M.; Orris, D.; Ghosh, A.; Andreev, N., Tompkins, J.C.; Ozelis, J.P.; Glass, H.; Arkan, T., Velev, G.; Peterson, T.; Kashikhin, V.V.; Bauer, P., Yadav, S.; Rabehl, R.; Kerby, J.; Bossert, R., Zlobin, A.V.; Robotham, W.; Lamm, M.J.; Brandt, J., Sabbi, G.; McInturff, A.D.; Caspi, S., Scanlan, R.; Makarov, A.A.; Chichili, D.R., Schlabach, P.; Nobrega, A.; Carson, J., Sylvester, C.; Novitski, I.; DiMarco, J., and Strait, J.; Ogitsu, T.; Feher, S.

Subjects
United States. Department of Energy. Fermi National Accelerator Laboratory -- Equipment and supplies, Magnetic fields -- Research, Superconductivity -- Equipment and supplies, Business, Electronics, Electronics and electrical industries
Abstract

The US-LHC Accelerator Project is developing superconducting quadrupole magnets specifically for Large Hadrom Collider's interaction regions. Models of the magnets have been built in order to study their performance, and the results are presented and compared with the field quality required.

Published
2001

41. Status of the LHC inner triplet quadropole program at Fermilab

Author

Scanlan, R.; Nobrega, A.; Dimarco, J.; Andreev, N., Schlabach, P.; Novitski, I.; Feher, S.; Arkan, T., Sylvester, P.; Ogitsu, T.; Ghosh, A.; Bauer, P., Strait, J.; Orris, D.; Glass, H.; Bossert, R., Tartaglia, M.; Ozelis, J.P.; Huang, Y.; Brandt, J., Tompkins, J.C.; Page, T.; Kerby, J.; Carson, J., Velev, G.; Peterson, T.; Lamm, M.; Caspi, S., Yadav, S.; Rabehl, R.; Markarov, A.A.; Chichili, D.R., Zlobin, A.V.; Robotham, W.; McInturff, A.D.; Chiesa, L., and Sabbi, G.; Nicol, T.; Darve, C.

Subjects
United States. Department of Energy. Fermi National Accelerator Laboratory -- Equipment and supplies, Cryonics -- Equipment and supplies, Superconductivity -- Measurement, Business, Electronics, Electronics and electrical industries
Abstract

The Fermi National Accelerator Laboratory (Fermilab) is developing an inner triplet quadrupole for the Large Hadron Collider at the European Laboratory for Nuclear Research (CERN) in Switzerland. The magnet must have a 215 T/m gradient across a 70mm coil bore, and should operate at 1.9K in superfluid helium.

Published
2001

42. Conceptual design of a common coil dipole for VLHC

Author

Sabbi, G., Ambrosio, G., Andreev, N., Barzi, E., Bauer, P., Ewald, K., Limon, P., Novitski, I., Ozelis, J., Higley, H., and Scanlan, R.

Subjects
Magnetic circuits -- Research, Superconducting magnets -- Design and construction, Business, Electronics, Electronics and electrical industries
Abstract

The design of a react-and-wind common coil dipole, including magnetic design, quench protection and mechanical support issues, is reported.

Published
2000

43. Study of the react and wind technique for a Nb3Sn common coil dipole

Author

Ambrosio, G., Andreev, N., Barzi, E., Bauer, P., Ewald, K., Ozelis, J., Sabbi, G., and Dietderich, D.

Subjects
Magnetic dipoles -- Research, Business, Electronics, Electronics and electrical industries
Abstract

The react and wind technique for a Nb3Sn common coil dipole is described and the results of measurements on strands and cable layout are reported.

Published
2000

44. Quench behavior of quadruople model magnets for the LHC inner triplets at Fermilab

Author

Andreev, N., Arkan, T., Bauer, P., Bossert, R., Brandt, J., Chichili, D.R., Carson, J., DiMarco, J., Feher, s., Glass, H., Kerby, J., Lamm, M.J., Makarov, A., Nobrega, a., Novitski, I., Ogitsu, T., Orris, D., Ozelis, J.P., Rabehl, R., Robotham, W., Sabbi, G., Schlabach, P., Sylvester, C., Strait, J., Tartaglia, M., Tomplins, J.C., Yadav, S., Zlobin,a.V., Caspi, S., McInturff, A.D., Scanlan, R., and Ghosh, A.

Subjects
Superconducting magnets -- Research, Business, Electronics, Electronics and electrical industries
Abstract

The LHC inner triplets at Fermilab were investigated with regard to quench behavior of quadrupole model magnets.

Published
2000

45. Field quality in Fermilab-built models of high gradient quadrupole magnets for the LHC interaction regions

Author

Andreev, N., Arkan, T., Bauer, P., Bossert, R., Brandt, J., Chichili, D.R., Carson, J., DiMarco, J., Feher, S., Glass, H., Kerby, J., Lamm, M.J., Makarov, A.a., Nobrega, A., Novitski, I., Ogitsu, T., Orris, D., Ozelis, J.P., Peterson, T., Rabehl, R., Robotham, W., Sabbi, G., Schlabach, P., Sylvester, C., Strait, J., Tartaglia, M., Tompkins, J.C., Yadav, S., Zlobin, A.V., Caspi, S., McInturff, D., Scanlan, R., and Ghosh, A.

Subjects
Superconducting magnets -- Research, Business, Electronics, Electronics and electrical industries
Abstract

The development of the superconducting quadrupole magnets for the interaction areas of the Large Hadron Collider is examined.

Published
2000

46. Recent results from the LHC inner triplet quadrupole development program at Fermilab

Author

Andreev, N., Arkan, T.t., Bauer, P., Bossert, R., Brandt, J., Chichili, D.R., Carson, J., DiMarco, J., Feher, S., Kerby, J., Lamm, M.J., Limon, P.J., Makarov, A., Nobrega, A., Novitski, I., Ogitsu, T., Orris, D., Ozelis, J.P., Robotham, W., Sabbi, G., Schlabach, P., Strait, J., Tartaglia, M., Tompkins, J.C., Yadav, s., Zlobin, A.V., Caspi, S., McInturff, A.D., Scanlan, R., and Ghosh, a.

Subjects
Hadrons -- Usage, Superconductors -- Research, Business, Electronics, Electronics and electrical industries
Abstract

The Large Hadron Collider Inner Triple Quadrupole Development Program at Fermilab is discussed.

Published
2000

47. Minimum quench energies of LHC strands

Author

Bauer, P., Wolf, R., and Oberli, L.

Subjects
Helium -- Usage, Particle accelerators -- Design and construction, Superconductive devices -- Analysis, Business, Electronics, Electronics and electrical industries
Abstract

A study aimed at establishing the influence of a number of strand parameters on the Minimum Quench Energy (MQE) of the Large Hadron Collider (LHC) prototype strands has been initiated within the framework of the project. The MQE analysis includes the study of the effect of such parameters as Cu/Sc ratio, RRR, coating, cooling and billet design on the LHC prototype while it is operating in a superfluid helium environment at 1.9 degrees Kelvin in peak-fields of 9 T.

Published
1999

48. Tip heater for Minimum Quench Energy measurements on superconducting strands

Author

Bauer, P., Donnier, J., and Oberli, L.

Subjects
Particle accelerators -- Design and construction, Superconducting magnets -- Evaluation, Superconductors -- Thermal properties, Temperature measurements -- Methods, Business, Electronics, Electronics and electrical industries
Abstract

The application of the electrical graphite-paste heater technique in measuring the Minimum Quench Energy (MQE) needed for the strands of the Large Hadron Collider (LHC) main magnets is described. The MQE is the least amount of heat pulse required to produce a quench under operating conditions. The tip-heater configuration is capable of generating a heat pulse in a thin resistive graphite paste deposit located on top of a small tip that is pressed by a clamp against the sample.

Published
1999

49. Transient stability of LHC strands

Author

Baynham, D.E., Cragg, D.A., Coombs, R.C., Bauer, P., and Wolf, R.

Subjects
Particle accelerators -- Design and construction, Superconducting magnets -- Evaluation, Superconductors -- Magnetic properties, Business, Electronics, Electronics and electrical industries
Abstract

A description of the theoretical modeling and transient stability measurement conducted on single strands from the Large Hadron Collider (LHC) cable is presented. The LHC is designed to operate at 1.9 degrees Kelvin to reach the high bending fields that are required for the optimum operation of the dipole magnets. The 'porous' design of the coil and cable matrix is aimed at allowing the helium coolant to penetrate the cable to enhance its stability.

Published
1999

50. Minimum quench energy measurements on single strands for LHC main magnets

Author

Ghosh, A.K., Sampson, W.B., Bauer, P., and Oberli, L.

Subjects
Electromagnetic measurements -- Methods, Stability -- Research, Superconducting magnets -- Research, Business, Electronics, Electronics and electrical industries
Abstract

Research was conducted to examine the effect of different strand designs, copper to superconductor ratios and the source of the niobium-titanium alloy on Minimum Quench Energies (MQE). The MQE calculations on strands for the Large Hadron Collider magnets reveal that general variations in the strand design, coating and matrix RRR and the NbTi source do not substantially modify MQE at high currents even in superfluid helium.

Published
1999

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