Operational Experience of the NML Cryogenic Plant at the FAST Test Facility

Journal Article · Wed Jun 25 04:00:00 EDT 2025 · No journal information

DOI:https://doi.org/10.48550/arXiv.2506.20663· OSTI ID:2570448

Wallace, Timothy ^[1]; Creus-Prats, Joaquim ^[1]; Hurd, Joseph ^[1]; White, Michael J. ^[1]; Makara, Jerry ^[1]; Pei, Liujin ^[1]; Hansen, Benjamin ^[1]; Theilacker, Jay ^[1]; Bossert, Rick ^[1]; Martinez, Alexander ^[1]; Santucci, James K. ^[1]; Romanov, Sasha ^[1]

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1. Fermilab

The NML cryogenic plant cools two individually cryostated superconducting radio frequency (SRF) capture cavities and one prototype ILC cryomodule with eight SRF cavities. This complex accelerates electrons at 150 MeV for the Integrable Optics Test Accelerator (IOTA) ring, located at the Fermilab Accelerator Science and Technology (FAST) facility. The cryogenic plant is composed of two nitrogen precooled Tevatron satellite refrigerators, two Mycom 2016C compressors, a cryogenic distribution system, a Frick purifier compressor, two charcoal bed adsorber purifiers, and a liquid ring vacuum pump with a roots booster. The SRF cavities are immersed in a 2.0 K liquid helium bath, shielded with a 5 K gaseous helium shield and a liquid nitrogen cooled thermal shield. Since 2019, this R&D accelerator complex has gone through four science runs with an average duration of 12 months. Operational experience for each run, availability metrics, performance data and common outages are presented in this paper.

• Research Organization: Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
• Sponsoring Organization: US Department of Energy
• DOE Contract Number: 89243024CSC000002
• OSTI ID: 2570448
• Report Number(s): FERMILAB-PUB-25-0385-AD-TD; oai:inspirehep.net:2939035; arXiv:2506.20663
• Journal Information: No journal information, Journal Name: No journal information
• Country of Publication: United States
• Language: English