Investigation of Thermal Acoustic Effects on SRF Cavities within CM1 at Fermilab

Conference · Wed Jun 01 04:00:00 EDT 2016

DOI:https://doi.org/10.18429/JACoW-IPAC2016-WEPMR005· OSTI ID:1289939

McGee, Mike ^[1]; Harms, Elvin ^[1]; Klebaner, Arkadiy ^[1]; Leibfritz, Jerry ^[1]; Martinez, Alex ^[1]; Pischalnikov, Yuriy ^[1]; Schappert, Warren ^[1]

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1. Fermilab

Two TESLA-style 8-cavity cryomodules have been operated at Fermilab Accelerator Science and Technology (FAST), formerly the Superconducting Radio Frequency (SRF) Accelerator Test Facility. Operational instabilities were revealed during Radio Frequency (RF) power studies. These observations were complemented by the characterization of thermal acoustic effects on cavity microphonics manifested by apparent noisy boiling of helium involving vapor bubble and liquid vibration. The thermal acoustic measurements also consider pressure and temperature spikes which drive the phenomenon at low and high frequencies.

• 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: 1289939
• Report Number(s): FERMILAB-CONF-16-152-AD-TD; arXiv:1607.00358; 1470170
• Country of Publication: United States
• Language: English

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