Journal of the Korean Physical Society

pISSN 0374-4884 eISSN 1976-8524


J. Korean Phy. Soc. 2006; 49(9(6)): 263

Published online December 20, 2006

Copyright © The Korean Physical Society.

Coil Encasing and VPI Process of the KSTAR Toroidal Field Magnet System

H. T. Kim, C. H. Choi, J. W. Sa, H. K. Park, K. H. Hong, H. Shin, J. S. Bak and K. M. Nam


The magnet system of the Korea Superconducting Tokamak Advanced Research (KSTAR) consists of 16 toroidal field (TF) coils, 4 pairs of central solenoid (CS) coils, and 3 pairs of outer poloidal field (PF) coils. Each TF coil structure has a height of 4.2 m, a width of 3.5 m, and a toroidal angle of 22.5$^circ$. The TF coil generates high electromagnetic loads such as in-plane and out-of-plane forces during operation, due to the high coil current. A rigid support structure is required to withstand these loads. The TF coil winding pack (WP) is encased in a structure to enhance mechanical stability. The TF coil structure consists of a case part and a cover part. The two important processes are insertion of the coil winding pack and the filling of the assembly gap for manufacturing the TF magnet. In this paper, the requirements and procedures for the assembly of the TF coil winding pack and structure are presented.