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Title: Assembly of a Mechanical Model of MQXFB, the 7.2-m-Long Low-$$\beta$$ Quadrupole for the High-Luminosity LHC Upgrade

Journal Article · · IEEE Transactions on Applied Superconductivity
ORCiD logo [1]; ORCiD logo [2];  [1]; ORCiD logo [3]; ORCiD logo [1];  [3];  [3];  [3]; ORCiD logo [3]; ORCiD logo [1]; ORCiD logo [3]; ORCiD logo [1];  [3]; ORCiD logo [1];  [3];  [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)

The Nb3Sn low-$$β$$ quadrupole MQXF is being developed as a part of the High-Luminosity large hadron collider (LHC) upgrade project. The magnet will be produced in two different configurations, sharing the same cross section but with different lengths. A 7.2-m mechanical model of MQXFB was recently assembled at European Organization for Nuclear Research (CERN) with one copper coil, two low-grade coils, and one rejected coil. Coil dimensions were measured with a portable coordinate measurement machine. The coil pack shimming was designed in order to optimize the field quality and the contacts between the coils and the collars. The azimuthal preload target was defined using the short models experience. The mechanical behavior during loading was monitored by means of strain gauges. The results of this study demonstrated that the structure can provide the required prestress to the coils.

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:
AC02-05CH11231; AC02-07CH11359
OSTI ID:
1561944
Alternate ID(s):
OSTI ID: 1498557
Report Number(s):
FERMILAB-PUB-19-053; FERMILAB-PUB-19-053-TD; ark:/13030/qt6zr4w07d; TRN: US2000666
Journal Information:
IEEE Transactions on Applied Superconductivity, Vol. 29, Issue 5; ISSN 1051-8223
Publisher:
Institute of Electrical and Electronics Engineers (IEEE)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 4 works
Citation information provided by
Web of Science

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