Assembly of a Mechanical Model of MQXFB, the 7.2-m-Long Low-$$\beta$$ Quadrupole for the High-Luminosity LHC Upgrade
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
- 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
Web of Science
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