Real Time MHD Mode Control Using ECCD in KSTAR: Plan and Requirements

被引：10

作者：

Joung, M. ^{[1
]}

Woo, M. H. ^{[1
]}

Jeong, J. H. ^{[1
]}

Hahn, S. H. ^{[1
]}

Yun, S. W. ^{[1
]}

Lee, W. R. ^{[1
]}

Bae, Y. S. ^{[1
]}

Oh, Y. K. ^{[1
]}

Kwak, J. G. ^{[1
]}

Yang, H. L. ^{[1
]}

Namkung, W. ^{[2
]}

Park, H. ^{[2
]}

Cho, M. H. ^{[2
]}

Kim, M. H. ^{[3
]}

Kim, K. J. ^{[3
]}

Na, Y. S. ^{[3
]}

Hosea, J. ^{[4
]}

Ellis, R. ^{[4
]}

机构：

[1] Natl Fus Res Inst, 52 Eoeun Dong, Taejon, South Korea

[2] POSTECH, Dept Phys, Gyeongangbukdo, South Korea

[3] Seoul Natl Univ Daehakdong, Dept Nucl Engn, Seoul, South Korea

[4] Princeton Plasma Phys Lab, Princeton, NJ 08542 USA

来源：

RADIOFREQUENCY POWER IN PLASMAS | 2014年 / 1580卷

关键词：

NTM; Suppression; Real time control; ECH; Steerable Mirror; KSTAR;

D O I：

10.1063/1.4864599

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

For a high-performance, advanced tokamak mode in KSTAR, we have been developing a real-time control system of MHD modes such as sawtooth and Neo-classical Tearing Mode (NTM) by ECH/ECCD. The active feedback control loop will be also added to the mirror position and the real-time detection of the mode position. In this year, for the stabilization of NTM that is crucial to plasma performance we have implemented open-loop ECH antenna control system in KSTAR Plasma Control System (PCS) for ECH mirror movement during a single plasma discharge. KSTAR 170 GHz ECH launcher which was designed and fabricated by collaboration with PPPL and POSTECH has a final mirror of a poloidally and toroidally steerable mirror. The poloidal steering motion is only controlled in the real-time NTM control system and its maximum steering speed is 10 degree/sec by DC motor. However, the latency of the mirror control system and the return period of ECH antenna mirror angle are not fast because the existing launcher mirror control system is based on PLC which is connected to the KSTAR machine network through serial to LAN converter. In this paper, we present the design of real time NTM control system, ECH requirements, and the upgrade plan.

引用

页码：506 / 509

页数：4

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