Title :
First Commissioning Results of the KSTAR Cryogenic System
Author :
Kim, Yaung-Soo ; Park, Y.M. ; Lee, Y.J. ; Kwag, S.W. ; Chang, Y.B. ; Song, N.H. ; Woo, I.S. ; Park, H.T. ; Cho, K.W. ; Chang, H.S. ; Park, D.S. ; Joo, J.J. ; Moon, K.M. ; Park, K.R. ; Chu, Yong ; Yonekawa, Hirofumi ; Kim, Y.O. ; Bang, E.N. ; Kim, H.K. ; K
Author_Institution :
Nat. Fusion Res. Inst., Daejeon, South Korea
fDate :
6/1/2009 12:00:00 AM
Abstract :
The cryogenic system for the KSTAR superconducting (SC) magnets has been commissioned. It consists of a cold box, distribution boxes (DB) and cryogenic transfer lines. The cold box and DB #1 provide 600 g/s of supercritical helium to cool the SC magnets, their SC bus-lines, and the magnet support structures. It also provides 17.5 g/s of liquid helium to the current leads and supplies cold helium flow to the thermal shields. The main duties of the DB #2 are the relative distribution of the cryogenic helium among the cooling channels of each KSTAR cold component and the emergency release of over-pressurized helium during abnormal events such as quenches of the SC magnets. After individual commissioning, the system was integrated and cooled down with the KSTAR device. In this paper, the construction and commissioning results of the KSTAR cryogenic system will be introduced. In addition, we will present the cool-down results of the KSTAR device.
Keywords :
Tokamak devices; cryogenics; liquid helium; superconducting magnets; He; KSTAR cold component; KSTAR commissioning; KSTAR cryogenic system; KSTAR superconducting magnets; cold box; cold helium flow; cryogenic helium; cryogenic transfer lines; current leads; distribution boxes; liquid helium; quenching; superconducting bus-lines; supercritical helium; thermal shields; tokamak; Cooling; cryogenics; superconducting magnet; tokamak;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2009.2018488
