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윤성운(Sungwoon Yoon),최철진(Chul Jin Choi),박광명(Kwangmyung Park),안정훈(Jeong Hun An),안원(Won Ahn),김기원(Gi Won Kim),박승기(Seoung Ki Park),이용만(Young Man Lee) 대한기계학회 2015 대한기계학회 춘추학술대회 Vol.2015 No.11
The first Korean heavy ion linear accelerator, named RAON, will be operating at 2 K. The 2 K temperature can be achieved using superfluid helium (at 2.0 K, 23.4 Torr). In the SRF test facility, superfluid helium at 2 K is produced by the 2K-system which consists of a 2K-module, a warm pump system, and a control system. The 2K-module is a sort of cryomodule to keep the superfluid helium at 2 K. The warm pump system pumps down the vapor pressure of liquid helium and the control system keeps the vapor pressure at 23.4 Torr with a butterfly valve. This paper presents the operation procedure of the 2K-system and the result of cooldown test.