An upgraded cryogenic test stand for HL-LHC cryo-assemblies

The Fermilab horizontal test stand previously used for testing the LHC inner triplet quadrupoles has been upgraded to test cryo-assemblies for the high-luminosity LHC upgrade (HL-LHC). The test requirements of these new cryo-assemblies required additional capabilities of the test stand cryogenic sys...

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Bibliographic Details
Published in:IOP conference series. Materials Science and Engineering 2022-05, Vol.1240 (1), p.12078
Main Authors: Rabehl, R, Al Atassi, O, Chlachidze, G, Feher, S, Koshelev, S, Ranpariya, S
Format: Article
Language:English
Subjects:
Assemblies
Cryogenic equipment
Luminosity
Quadrupoles
Test stands
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Summary:The Fermilab horizontal test stand previously used for testing the LHC inner triplet quadrupoles has been upgraded to test cryo-assemblies for the high-luminosity LHC upgrade (HL-LHC). The test requirements of these new cryo-assemblies required additional capabilities of the test stand cryogenic system, including controlled cool-down and warm-up, helium recovery after a quench, and operation at higher pressures. Most of these upgrades were completed to support a zero-magnet test in late 2020, with the remainder of the upgrades completed to support the first pre-series cryo-assembly test in early 2022. An overview of the design and initial operating experience of the upgraded test stand cryogenic system and associated process controls system are presented in this paper.
ISSN:1757-8981
1757-899X
DOI:10.1088/1757-899X/1240/1/012078