Speaker
Description
The EIC Hadron Storage Ring (HSR) reuses the RHIC yellow ring with substantial reconfiguration. A major challenge is mitigating beam-induced heating of cryogenic components caused by the shorter hadron bunches and an average beam current three times that of RHIC. In addition, large transverse beam offsets at injection due to helical magnet itself generate asymmetric resistive-wall losses in the cryogenic BPM region. To limit these losses, the HSR helical magnet assembly uses a new copper-plated stainless-steel beam pipe with an amorphous-carbon coating. This paper presents heating and thermal analysis of the HSR cryogenic helical magnet and BPM assembly. Thermal simulations show narrow thermal margin for the helical magnet unit, and adequate margin for the BPM assembly.
Funding Agency
Work supported by Brookhaven Science Associates, LLC under Contract
No. DE-SC0012704 with the U.S. Department of Energy
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