著者

山田 一成 大関 和貴 須田 健嗣

出版者

公益社団法人 低温工学・超電導学会 (旧 社団法人 低温工学協会)

雑誌

低温工学 (ISSN:03892441)

巻号頁・発行日

vol.56, no.4, pp.201-208, 2021 (Released:2021-07-20)

参考文献数

18

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A helium cryogenics system for the superconducting heavy-ion linear accelerator (SRILAC) has been introduced at the RIKEN Nishina Center. The SRILAC contains a total of 10 superconducting quarter-wave-length resonators made of pure niobium materials installed in 3 cryomodules; which realizes the beam energy upgrade of the existing room-temperature linear accelerator. The refrigerator, a HELIAL MF manufactured by Air Liquide, has successfully accomplished a cooling capacity of about 730 W and a sufficient helium pressure stability with a fluctuation less than ±0.4 kPa. The cryogenic system started operation in October 2019, and the SRILAC has been supplying beams to experiments since June 2020, along with a stable operation of the cryogenics system. This article provides an overview of the cryomodule and the helium cryogenics system as well as the operational status of the helium cryogenics system.