Simulation of Conduction Cooled SRF Cavity
- Univ. of Alabama, Birmingham, AL (United States)
SRF cavities are used heavily in high energy physics research, and simplifying operation of SRF cavities could enable their use in many fields of industry. Liquid helium coolant systems are a notable complexity of operating SRF cavities, and replacing liquid helium with cryocooler conduction cooling is an important research and development interest. As part of this effort, a system consisting of a 650 MHz single cell cavity, a commercial grade pulse tube refrigerator, and an aluminum thermal link was simulated through finite element analysis. The electromagnetic fields inside the cavity, heat flow through the system, and temperature distribution of the thermal link and cavity were calculated. Based on the simulations, the pulse tube refrigerator is capable of supplying adequate cooling power to a cavity with \ce{Nb3Sn} coating operating with an accelerating gradient between 6 and 12 MV/m. The maximum simulated temperature of the cavity was below 7 K, and the oscilla tions in temperature introduced by the pulse tube refrigerator were shown to dampen in amplitude before reaching the cavity surface.
- Research Organization:
- Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), High Energy Physics (HEP)
- DOE Contract Number:
- AC02-07CH11359
- OSTI ID:
- 1477991
- Report Number(s):
- FERMILAB-SLIDES-18-109-LDRD; oai:inspirehep.net:1698201
- Country of Publication:
- United States
- Language:
- English
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