Feedback control of resistive wall modes by saddle coils in RFX-mod

被引：26

作者：

Bolzonella, T. ^{[1
]}

Cavinato, M. ^{[1
]}

Gaio, E. ^{[1
]}

Grando, L. ^{[1
]}

Luchetta, A. ^{[1
]}

Manduchi, G. ^{[1
]}

Marchiori, G. ^{[1
]}

Marrelli, L. ^{[1
]}

Paccagnella, R. ^{[1
]}

Soppelsa, A. ^{[1
]}

Zanca, P. ^{[1
]}

机构：

[1] Assoc EURATOM ENEA Fus, Consorzio RFX, I-35127 Padua, Italy

来源：

FUSION ENGINEERING AND DESIGN | 2007年 / 82卷 / 5-14期

基金：

欧盟地平线“2020”;

关键词：

resistive wall modes; MHD mode control; feedback control; digital control system;

D O I：

10.1016/j.fusengdes.2007.05.020

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

Active control of resistive wall modes (RWMs) is a key issue for high-beta operation of future tokamaks, including ITER. RFX has been recently modified to specifically address this issue by means of a new saddle coil system, which is the most powerful and flexible among all fusion devices, including 192 coils covering the whole torus. Unstable RWMs have been experimentally observed during the recent machine operation, showing poloidal and toroidal components m = 1, 2 < vertical bar n vertical bar < 7 and growth times of some tens of ms, consistent with theoretical predictions. RFX-mod addresses the control of RWMs by acting on the magnetic field configuration at the plasma boundary. The system aims not only at RWM stabilization, but also at interaction with tearing modes. By means of the system, successful experimental campaigns have been executed demonstrating the feasibility of RWM active control. The paper discusses on the system engineering and technological features and presents the results achieved. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：1064 / 1072

页数：9

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