Cryogenic testing of HL-LHC Q1/Q3 cryo-assemblies at Fermilab

Conference · Thu May 29 04:00:00 EDT 2025 · No journal information

OSTI ID:2568552

Rabehl, R. ^[1]; Barba, M. ^[1]; Chlachidze, G. ^[1]; Feher, S. ^[1]

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1. Fermilab

Fermilab is conducting horizontal cryogenic testing of Q1/Q3 cryo-assemblies for the high-luminosity LHC upgrade (HL-LHC). Cryo-assemblies are installed on the upgraded Fermilab horizontal test stand previously used for testing the LHC inner triplet quadrupoles. The cryogenic process requirements of these tests include controlled cool-down and warm-up with a 100 K maximum temperature differential between the two ends of the cold mass, operation of a 1.3 bar, 1.9 K bath of subcooled superfluid helium during power testing and magnetic measurements, and operation at pressure up to 18 bar with full helium recovery after a quench. This paper presents the operational experience gained from the first tests as well as improvement for subsequent tests.

• Research Organization: Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
• Sponsoring Organization: US Department of Energy
• DOE Contract Number: 89243024CSC000002
• OSTI ID: 2568552
• Report Number(s): FERMILAB-CONF-25-0274-TD; oai:inspirehep.net:2926396
• Conference Information: Journal Name: No journal information
• Country of Publication: United States
• Language: English