Journal of the Korean Physical Society

pISSN 0374-4884 eISSN 1976-8524


J. Korean Phy. Soc. 2006; 49(9(6)): 272

Published online December 20, 2006

Copyright © The Korean Physical Society.

Jacketing of CICC for KSTAR Superconducting Magnet System

B. S. Lim, J. Y. Choi, S. I. Lee, C. S. Kim, I. S. Woo, D. J. Kim, N. H. Song, W. W. Park, Y. J. Song, D. K. Lee, J. J. Joo, G. S. Lee, S. J. An, K. P. Kim, M. S. Ko, W. Chung, K. Pak, H. K. Park, K. Kim and J. S. Bak


The KSTAR (Korea Superconducting Tokamak Advanced Research) superconducting magnet system consists of 16 TF (Toroidal Field) and 14 PF (Poloidal Field) coils. Internally-cooled cabled superconductors will be used for the magnet system. The magnet system adopts a superconducting CICC (Cable-In-Conduit Conductor) type conductor. It uses two different types of CICCs, Nb$_{3}$Sn cable with Incoloy alloy 908 (afterward, Incoloy 908) conduit and NbTi cable with 316LN stainless-steel conduit. A continuous CICC jacketing system is developed for the CICC jacketing and it uses the tube-mill process which consists of forming, welding, sizing and squaring procedures. The cabling process for TF and PF superconducting cable and the fabrication process of each CICC (TF CICC and PF CICC) are described. The welding of conduit materials is also discussed. The fabrication results including the geometrical specification will be discussed.