Fabrication of the KSTAR superconducting CICC

AC Loss Characteristics of the KSTAR CSMC Estimated by Pulse Test

“…The major parameters of the CSMC are shown in Table I. The tube-mill process is adopted for the jacketing of CICC [3], [4].…”

Hydraulic Behaviors of KSTAR PF Coils in Operation

“…In the past, several preliminary tests of Nb 3 Sn coil and magnet like ITER Toroidal Field Model Coil (TFMC) and Central Solenoid Model Coil (CSMC) were carried out and the Experimental Advanced Superconducting Tokamak (EAST) of China has also operated since 2006, however only KSTAR can show us the integrated performance as full magnet system using ITER-like superconductors. Most of all KSTAR followed a unique procedure of manufacture like the continuous winding scheme of coil to reduce the electrical and hydraulic joint resistance [2] and then we carried out the room temperature tests of each coil as a part of the quality assurance activities until completion of tokamak. Especially, we didn't carry out the cool-down and current charging tests of the whole KSTAR coils except several model coil tests.…”

Development of CICC for KSTAR Superconducting Magnet System

“…It is a nickel-ferrous alloy and the general micro-structure of Incoloy 908 is a single phase austenitic structure. The strengthening is achieved by precipitation of during the superconductor reaction [4].…”

“…The STS 316LN belongs to the austenitic family of stainless steels which are noted for their corrosion resistance and high tensile strength [4].…”

“…To determine the strip joint angle, tensile test has been performed at various joint angle. The mechanical properties of 45 degree joint is superior to other joints and the strip joint is prepared by 45 degree [4]. Strip joint parts are welded by automatic GTAW(Gas Tungsten Arc Welding).…”