Test Results of the first 3.7 m Long Nb3Sn Quadrupole by LARP and Future Plans

Journal Article · Sun Aug 01 04:00:00 EDT 2010 · IEEE Transactions on Applied Superconductivity

DOI:https://doi.org/10.1109/TASC.2010.2089586· OSTI ID:1048938

Ambrosio, G; Andreev, N; Anerella, M; Barzi, E; Bingham, B; Bocian, D; Bossert, R; Caspi, S; Chlachidize, G; Dietderich, D; Escallier, J; Felice, H; Ferracin, P; Ghosh, A; Godeke, A; Hafalia, R; Hannaford, R; Jochen, G; Kashikhin, V V; Kim, M J ; Kovach, P; Lamm, M; McInturff, A; Muratore, J; Nobrega, F; Novitsky, I; Orris, D; Prebys, E; Prestemon, S; Sabbi, G L; Schmalzle, J; Sylvester, C; Tartaglia, M; Turrioni, D; Velev, G; Wanderer, P; Whitson, G; Zlobin, A V

In December 2009 during its first cold test, LQS01, the first long Nb{sub 3}Sn Quadrupole made by LARP (LHC Accelerator Research Program, a collaboration of BNL, FNAL, LBNL and SLAC), reached its target field gradient of 200 T/m. This target was set in 2005 by the US Department fo Energy, CERN and LARP, as a significant milestone toward the development of Nb{sub 3}Sn quadrupoles for possible use in LHC luminosity upgrades. LQS01 is a 90 mm aperture, 3.7 m long quadrupole using Nb{sub 3}Sn coils. The coil layout is equal to the layout used in the LARP Technological Quadrupoles (TQC and TQS models). Pre-stress and support are provided by a segmented aluminum shell pre-loaded using bladders and keys, similarly to the TQS models. After the first test the magnet was disassembled, reassembled with an optimized pre-stress, and reached 222 T/m at 4.5 K. In this paper we present the results of both tests and the next steps of the Long Quadrupole R&D.

• Research Organization: Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, CA (US)
• Sponsoring Organization: Accelerator& Fusion Research Division
• DOE Contract Number: AC02-05CH11231
• OSTI ID: 1048938
• Report Number(s): LBNL-5002E
• Journal Information: IEEE Transactions on Applied Superconductivity, Journal Name: IEEE Transactions on Applied Superconductivity Journal Issue: 3 Vol. 21; ISSN 1051-8223
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
LARP
Nb{sub 3}Sn
long magnet
superconducting magnet