Recent Advances of Scintillator-Based Escaping Fast Ion Diagnostics in Toroidal Fusion Plasmas in Japan, Korea, and China

Abstract

The scintillator-based fast-ion loss detector (FILD) project in Japan, Korea, and China has been accelerated in an international collaboration framework to enhance comprehensive understanding of fast-ion behaviors in toroidal fusion plasmas. The FILDs in LHD heliotron, KSTAR, HL-2A, and EAST tokamaks are successfully working as a result of joint work. Physics experiments on fast ions, such as effects of Alfvénic mode, tearing mode, resonant magnetic perturbation field, and disruption on fast-ion behaviors are ongoing. This paper describes the FILD developed for each device and those effects on fast ions in LHD, KSTAR, HL-2A, and EAST.

Keywords:

• Fast ion
• fast-ion loss detector
• fast-ion-driven MHD instability

Acknowledgments

This work was supported by the JSPS-NRF-NSFC A3 Foresight Program on critical physics issues specific to steady-state sustainment of high-performance plasmas in the field of Plasma Physics (NSFC: No.11261140328, and NRF: No. 2012K2A2A6000443).