TY - JOUR
T1 - Current status and prospect of plasma control system for steady-state operation on QUEST
AU - Hasegawa, Makoto
AU - Nakamura, Kazuo
AU - Zushi, Hideki
AU - Hanada, Kazuaki
AU - Fujisawa, Akihide
AU - Tokunaga, Kazutoshi
AU - Idei, Hiroshi
AU - Nagashima, Yoshihiko
AU - Kawasaki, Shoji
AU - Nakashima, Hisatoshi
AU - Higashijima, Aki
N1 - Funding Information:
This work was supported by and conducted as part of NIFS Collaboration Research Program NIFS14KUTR100 and NIFS13KUTR085 , and JSPS KAKENHI Grant Number 24760699 . This work was also supported in part by the Collaborative Research Program of the Research Institute for Applied Mechanics, Kyushu University .
Publisher Copyright:
© 2016 Elsevier B.V.
PY - 2016/11/15
Y1 - 2016/11/15
N2 - The plasma control system (PCS) of QUEST is developed according to the progress of QUEST project. Since one of the critical goals of the project is to achieve the steady-state operation with high temperature vacuum vessel wall, the PCS is also required to have the capability to control the plasma for a long period. For the increase of the loads to processing power of the PCS, the PCS is decentralized with the use of reflective memories (RFMs). The PCS controls the plasma edge position with the real-time identification of plasma current and its position. This identification is done with not only flux loops but also hall sensors. The gas fueling method by piezo valve with monitoring the Hα signal filtered by a digital low-pass filter are proposed and suitable for the steady-state operation on QUEST. The present status and prospect of the PCS are presented with recent topics.
AB - The plasma control system (PCS) of QUEST is developed according to the progress of QUEST project. Since one of the critical goals of the project is to achieve the steady-state operation with high temperature vacuum vessel wall, the PCS is also required to have the capability to control the plasma for a long period. For the increase of the loads to processing power of the PCS, the PCS is decentralized with the use of reflective memories (RFMs). The PCS controls the plasma edge position with the real-time identification of plasma current and its position. This identification is done with not only flux loops but also hall sensors. The gas fueling method by piezo valve with monitoring the Hα signal filtered by a digital low-pass filter are proposed and suitable for the steady-state operation on QUEST. The present status and prospect of the PCS are presented with recent topics.
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U2 - 10.1016/j.fusengdes.2016.04.016
DO - 10.1016/j.fusengdes.2016.04.016
M3 - Article
AN - SCOPUS:84963650342
SN - 0920-3796
VL - 112
SP - 699
EP - 702
JO - Fusion Engineering and Design
JF - Fusion Engineering and Design
ER -