Real time magnetic control of the snowflake plasma configuration in the TCV tokamak

被引：7

作者：

Anand, H. ^{[1
]}

Coda, S. ^{[1
]}

Felici, F. ^{[1
]}

Galperti, C. ^{[1
]}

Moret, J-M ^{[1
]}

Labit, B. ^{[1
]}

Reimerdes, H. ^{[1
]}

Maurizio, R. ^{[1
]}

机构：

[1] Ecole Polytech Fed Lausanne, SPC, EPFL SB SPC, Stn 13, CH-1015 Lausanne, Switzerland

来源：

NUCLEAR FUSION | 2019年 / 59卷 / 12期

基金：

瑞士国家科学基金会;

关键词：

tokamak control; real-time; snowflake control; plasma shape control; real time equilibrium reconstruction; advanced plasma configuration; BOUNDARY; DIVERTOR;

D O I：

10.1088/1741-4326/ab4440

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

The novel plasma position and shape controller of the TCV tokamak aids in the precise control of complex configurations such as snowflake (SF) divertors. The ability of the controller design to simultaneously control the position, shape, divertor leg and X-points is extended to various SF plasma configurations. The unique feature of ordering the controlled variables from the most easily to the least easily controlled, while respecting the hardware limits on the poloidal-field coil currents, is exploited in particular to provide reliable control of SF equilibria with closely spaced X-points, approaching the exact snowflake. The off-line optimisation of the control parameters and their experimental implementation on snowflake plasma configuration is reported. The performance of the new controller is compared with the legacy TCV analogue controller for a SF plasma discharge. The new controller is successful in providing a marked improvement over the legacy TCV controller with respect to sigma, the main parameter of interest for this study.

引用

页数：9

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