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Test results of TQS03: A LARP shell-based Nb$_3$Sn quadrupole using 108/127 conductor
Future insertion quadrupoles with large apertures and high gradients will be required for the Phase II luminosity upgrade (10$^{35}$ cm$^{−2}$s$^{−1}$) of the Large Hadron Collider (LHC). Although improved designs, based on NbTi, are being considered as an intermediate step for the Phase I upgrade,...
Autores principales: | , , , , , , , , , , , , , , , , , |
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Lenguaje: | eng |
Publicado: |
2010
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Materias: | |
Acceso en línea: | https://dx.doi.org/10.1088/1742-6596/234/3/032010 http://cds.cern.ch/record/2631730 |
_version_ | 1780959623085293568 |
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author | Felice, H Ambrosio, G Bajko, M Barzi, E Bordini, B Bossert, R Caspi, S Dietderich, D Ferracin, P Feuvrier, J Ghosh, A Godeke, A Lizarazo, J Rossi, L Sabbi, G Wanderer, P Wang, X Zlobin, A V |
author_facet | Felice, H Ambrosio, G Bajko, M Barzi, E Bordini, B Bossert, R Caspi, S Dietderich, D Ferracin, P Feuvrier, J Ghosh, A Godeke, A Lizarazo, J Rossi, L Sabbi, G Wanderer, P Wang, X Zlobin, A V |
author_sort | Felice, H |
collection | CERN |
description | Future insertion quadrupoles with large apertures and high gradients will be required for the Phase II luminosity upgrade (10$^{35}$ cm$^{−2}$s$^{−1}$) of the Large Hadron Collider (LHC). Although improved designs, based on NbTi, are being considered as an intermediate step for the Phase I upgrade, the Nb$_3$Sn conductor is presently the best option that meets the ultimate performance goals for both operating field and temperature margin. As part of the development of Nb$_3$Sn magnet technology, the LHC Accelerator Research Program (LARP) developed and tested several 1-meter long, 90-mm aperture Nb$_3$Sn quadrupoles. The first two series of magnet used OST MJR 54/61 (TQ01 series) and OST RRP 54/61 (TQ02 series) strands. The third series (TQ03) used OST RRP 108/127 conductor. The larger number of sub-elements and the consequent reduction of the effective filament size, together with an increased fraction of copper and a lower Jc were expected to improve the conductor stability. The new coils were tested in the TQS03 series using a shell structure assembled with keys and bladders. The objective of the first test (TQS03a) was to evaluate the performances of the 108/127 conductor and, in particular, its behaviour at 1.9 K, while the second test (TQS03b) investigated the impact on high azimuthal pre-stress on the magnet performance. This paper reports on TQS03 fabrication, the strain gauge measurements performed during assembly, cool-down, excitation and the quench behaviour of the two magnets. |
id | oai-inspirehep.net-1665941 |
institution | Organización Europea para la Investigación Nuclear |
language | eng |
publishDate | 2010 |
record_format | invenio |
spelling | oai-inspirehep.net-16659412021-02-09T10:04:53Zdoi:10.1088/1742-6596/234/3/032010http://cds.cern.ch/record/2631730engFelice, HAmbrosio, GBajko, MBarzi, EBordini, BBossert, RCaspi, SDietderich, DFerracin, PFeuvrier, JGhosh, AGodeke, ALizarazo, JRossi, LSabbi, GWanderer, PWang, XZlobin, A VTest results of TQS03: A LARP shell-based Nb$_3$Sn quadrupole using 108/127 conductorAccelerators and Storage RingsAccelerators and Storage RingsFuture insertion quadrupoles with large apertures and high gradients will be required for the Phase II luminosity upgrade (10$^{35}$ cm$^{−2}$s$^{−1}$) of the Large Hadron Collider (LHC). Although improved designs, based on NbTi, are being considered as an intermediate step for the Phase I upgrade, the Nb$_3$Sn conductor is presently the best option that meets the ultimate performance goals for both operating field and temperature margin. As part of the development of Nb$_3$Sn magnet technology, the LHC Accelerator Research Program (LARP) developed and tested several 1-meter long, 90-mm aperture Nb$_3$Sn quadrupoles. The first two series of magnet used OST MJR 54/61 (TQ01 series) and OST RRP 54/61 (TQ02 series) strands. The third series (TQ03) used OST RRP 108/127 conductor. The larger number of sub-elements and the consequent reduction of the effective filament size, together with an increased fraction of copper and a lower Jc were expected to improve the conductor stability. The new coils were tested in the TQS03 series using a shell structure assembled with keys and bladders. The objective of the first test (TQS03a) was to evaluate the performances of the 108/127 conductor and, in particular, its behaviour at 1.9 K, while the second test (TQS03b) investigated the impact on high azimuthal pre-stress on the magnet performance. This paper reports on TQS03 fabrication, the strain gauge measurements performed during assembly, cool-down, excitation and the quench behaviour of the two magnets.oai:inspirehep.net:16659412010 |
spellingShingle | Accelerators and Storage Rings Accelerators and Storage Rings Felice, H Ambrosio, G Bajko, M Barzi, E Bordini, B Bossert, R Caspi, S Dietderich, D Ferracin, P Feuvrier, J Ghosh, A Godeke, A Lizarazo, J Rossi, L Sabbi, G Wanderer, P Wang, X Zlobin, A V Test results of TQS03: A LARP shell-based Nb$_3$Sn quadrupole using 108/127 conductor |
title | Test results of TQS03: A LARP shell-based Nb$_3$Sn quadrupole using 108/127 conductor |
title_full | Test results of TQS03: A LARP shell-based Nb$_3$Sn quadrupole using 108/127 conductor |
title_fullStr | Test results of TQS03: A LARP shell-based Nb$_3$Sn quadrupole using 108/127 conductor |
title_full_unstemmed | Test results of TQS03: A LARP shell-based Nb$_3$Sn quadrupole using 108/127 conductor |
title_short | Test results of TQS03: A LARP shell-based Nb$_3$Sn quadrupole using 108/127 conductor |
title_sort | test results of tqs03: a larp shell-based nb$_3$sn quadrupole using 108/127 conductor |
topic | Accelerators and Storage Rings Accelerators and Storage Rings |
url | https://dx.doi.org/10.1088/1742-6596/234/3/032010 http://cds.cern.ch/record/2631730 |
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