Present Status of the KSTAR Superconducting Magnet System Development

The mission of Korea Superconducting Tokamak Advanced Research (KSTAR)project is to develop an advanced steady-state superconducting tokamak for establishing a sci-entific and technological basis for an attractive fusion reactor. Because one of the KSTAR missionis to achieve a steady-state operation, the use of superconducting coils is an obvious choice for themagnet system. The KSTAR superconducting magnet system consists of 16 Toroidal Field (TF)coils and 14 Poloidal Field (PF) coils. Internally-cooled Cable-In-Conduit Conductors (CICC) areput into use in both the TF and PF coil systems. The TF coil system provides a field of 3.5 Tat the plasma center and the PF coil system is able to provide a flux swing of 17 V-sec. Themajor achievement in KSTAR magnet-system development includes the development of CICC,the development of a full-size TF model coil, the development of a coil system for backgroundmagnetic-field generation, the construction of a large-scale superconducting magnet and CICCtest facility.