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Design of the Fermilab Pre-Series Cold Mass for the HL-LHC Accelerator Upgrade Project

Journal Article · · IEEE Transactions on Applied Superconductivity
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  1. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
  2. European Organization for Nuclear Research, Geneva (Switzerland
+ Show Author Affiliations
Here as part of the U.S. contribution to the HL-LHC Accelerator Upgrade Project (AUP), Fermilab is designing and building cold masses suitable for use in the LHC interaction regions. The cold mass provides a vacuum-tight helium enclosure for the magnets. Two magnets are aligned both axially and in cross section at Fermilab based on survey and warm magnetic measurements. Bus work and instrumentation is added. A welded stainless steel vacuum-tight shell surrounds the two magnets, and the structure is prepared for insertion into the cryostat. This paper summarizes the design of the cold mass including alignment, bus work, weld details, and instrumentation.
Research Organization:
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
OSTI ID:
1856006
Report Number(s):
FERMILAB-PUB-22-092-TD; THU-PO3-112-02; oai:inspirehep.net:2056668
Journal Information:
IEEE Transactions on Applied Superconductivity, Journal Name: IEEE Transactions on Applied Superconductivity Journal Issue: 6 Vol. 32; ISSN 1051-8223
Publisher:
IEEECopyright Statement
Country of Publication:
United States
Language:
English

References (8)

The High Luminosity LHC interaction region magnets towards series production journal March 2021
Development of a high gradient quadrupole for the LHC interaction regions journal June 1997
Construction experience with MQXB quadrupole magnets built at Fermilab for the LHC interaction regions journal June 2003
Quench Protection System Optimization for the High Luminosity LHC Nb $_3$Sn Quadrupoles journal June 2017
Fabrication and Assembly Performance of the First 4.2 m MQXFA Magnet and Mechanical Model for the Hi-Lumi LHC Upgrade journal April 2018
The HL-LHC Low-β Quadrupole Magnet MQXF: From Short Models to Long Prototypes journal August 2019
Characterization of NbTi Busbar for HL-LHC Interaction Region Quadrupoles journal June 2020
Test Results of the First Pre-Series Quadrupole Magnets for the LHC Hi-Lumi Upgrade journal August 2021

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Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
LMQXFA
bus
cold mass
expansion loop
instruments
lead
magnetic separation
magnetic tunneling
quadrupole
steel
superconducting magnets
welding