AUP first Pre-series Cold Mass Installation into the Cryostat

Conference · Mon Sep 11 04:00:00 EDT 2023

DOI:https://doi.org/10.2172/2006505· OSTI ID:2006505

Strauss, T. ^[1]; S. Feher a, S. a ^[1]; Rabehl, R. ^[1]; Struik, M. ^[2]; Ramos, D. ^[2]

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1. Fermilab
2. CERN

For the Hi-Lumi LHC Upgrade (HL-LHC) new high field and large-aperture quadrupole magnets for the low-beta inner triplets (Q1, Q2, Q3) are being built. These new quadrupole magnets are based on Nb3Sn superconducting technology. As part of the US-HiLumi Accelerator Upgrade Project (AUP) ten Cryostat Assemblies (LQXFA) for Q1 and Q3 replacement will be built, tested and delivered to CERN. The first of the LQXFA was assembled and tested at Fermi National Accelerator Laboratory (FNAL) during the fall of 2022 and spring 2023. We will present the integration work of the Cold Mass assembly into the Cryostat Kit provided by CERN. Each Cold Mass contains two trained MQXFA magnets of ~ 5 m length installed in a stainless-steel helium pressure vessel. The Cold Mass will be surrounded by cryostat shields, piping, and vacuum vessel. We will discuss the metrology survey results and present the LQXFA measurements prior testing at the Fermilab Magnet Test facility and lessons learned.

• Research Organization: Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
• Sponsoring Organization: USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
• DOE Contract Number: AC02-07CH11359
• OSTI ID: 2006505
• Report Number(s): FERMILAB-POSTER-23-291-TD; oai:inspirehep.net:2696099
• Country of Publication: United States
• Language: English

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