[1N01-07] Engineering and Design for Nuclear Fusion (Heat and Mass-transfer Characteristic, Engineering Design)

[1N07] A fast discharge scheme of toroidal field coils for a fusion demo reactor

*yasuyuki Itoh¹, Hiroyasu Utoh^2,3, Yoshiteru Sakamoto^2,3, Ryoji Hiwatari^2,3 (1. Fukui University of Technology, 2. National Institutes for Quantum and Radiological Science and Technology, 3. Joint Special Design Team for Fusion DEMO)

Keywords:fusion demo reactor, toroidal field coil, fast discharge, insulation voltage, inductance

An inductance of toroidal field (TF) magnet in a fusion demo reactor is 3-4 times greater than that of ITER. The higher value of the inductance increases a turn insulation voltage generated in emergency fast discharge processes. We propose a fast discharge scheme of TF coils for avoiding the voltage increase with electrically dividing the magnet into two systems.