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Title: Fabrication and Assembly Performance of the First 4.2 m MQXFA Magnet and Mechanical Model for the Hi-Lumi LHC Upgrade

Journal Article · · IEEE Transactions on Applied Superconductivity
ORCiD logo [1];  [2];  [1];  [3]; ORCiD logo [4];  [3];  [3];  [3];  [3];  [1];  [1]; ORCiD logo [3]
  1. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  2. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
  3. European Organization for Nuclear Research (CERN), Geneva (Switzerland)
  4. CEA Saclay, Saclay (France)
+ Show Author Affiliations

Here, the LHC accelerator research program (LARP), in collaboration with CERN and under the scope of the high luminosity upgrade of the Large Hadron Collider, is in the prototyping stage in the development of a 150 mm aperture high-field Nb3Sn quadrupole magnet called MQXF. This magnet is mechanically supported using a shell-based support structure, which has been extensively demonstrated on several R&D models within LARP, as well as in the more recent short (1.2 m magnetic length) MQXF model program. The MQXFA magnets are each 4.2 m magnetic length, and the first mechanical long model, MQXFA1M (using aluminum surrogate coils), and MQXFAP1 prototype magnet (the first prototype with Nb3Sn coils) have been assembled at the LBNL. In this paper, we summarize the tooling and the assembly processes, and discuss the mechanical performance of these first two assemblies, comparing strain gauge data with finite element model analysis, as well as the near-term plans for the long MQXF magnet program.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), High Energy Physics (HEP)
Grant/Contract Number:
AC02-07CH11359; AC02-05CH11231
OSTI ID:
1452786
Alternate ID(s):
OSTI ID: 1561883
Report Number(s):
FERMILAB-PUB-17-372-TD; 1671477; TRN: US1900981
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: 10 works
Citation information provided by
Web of Science

Figures / Tables (19)

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Table II(p. 3)table Table II
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Table III(p. 5)table Table III
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Figure 12(p. 6)figure Figure 12
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Table V(p. 6)table Table V
Table VI(p. 7)table Table VI

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43 PARTICLE ACCELERATORS
superconducting magnet
superconducting coils
high luminosity LHC
MQXF
quadrupole