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Title: Summary of Test Results of MQXFS1—The First Short Model 150 mm Aperture Nb3Sn Quadrupole for the High-Luminosity LHC Upgrade

Journal Article · · IEEE Transactions on Applied Superconductivity
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  1. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
  2. Brookhaven National Lab. (BNL), Upton, NY (United States)
  3. European Organization for Nuclear Research (CERN), Geneva (Switzerland)
  4. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  5. Alternative Energies and Atomic Energy Commission (CEA), Saclay (France)
  6. Tampere Univ. of Technology, Tampere (Finland)
+ Show Author Affiliations

The development of Nb3Sn quadrupole magnets for the High-Luminosity LHC upgrade is a joint venture between the US LHC Accelerator Research Program (LARP)* and CERN with the goal of fabricating large aperture quadrupoles for the LHC interaction regions (IR). The inner triplet (low-β) NbTi quadrupoles in the IR will be replaced by the stronger Nb3Sn magnets boosting the LHC program of having 10-fold increase in integrated luminosity after the foreseen upgrades. Previously, LARP conducted successful tests of short and long models with up to 120 mm aperture. The first short 150 mm aperture quadrupole model MQXFS1 was assembled with coils fabricated by both CERN and LARP. The magnet demonstrated a strong performance at Fermilab's vertical magnet test facility reaching the LHC operating limits. This paper presents the latest results from MQXFS1 tests with changed prestress levels. The overall magnet performance, including quench training and memory, ramp rate, and temperature dependence, is also summarized.

Research Organization:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), High Energy Physics (HEP)
Grant/Contract Number:
AC02-05CH11231; AC02-07CH11359
OSTI ID:
1561887
Journal Information:
IEEE Transactions on Applied Superconductivity, Vol. 28, Issue 3; ISSN 1051-8223
Publisher:
Institute of Electrical and Electronics Engineers (IEEE)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 24 works
Citation information provided by
Web of Science

Cited By (2)

Implications of the strain irreversibility cliff on the fabrication of particle-accelerator magnets made of restacked-rod-process Nb3Sn wires journal April 2019
More time for Nb 3 Sn magnet conductors journal September 2018

Figures / Tables (9)

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Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
High Luminosity Large Hadron Collider (LHC)
interaction regions
low-β quadrupoles
Nb3Sn magnets