Modeling and control of plasma rotation for NSTX using neoclassical toroidal viscosity and neutral beam injection

被引：26

作者：

Goumiri, I. R. ^{[1
]}

Rowley, C. W. ^{[1
]}

Sabbagh, S. A. ^{[2
]}

Gates, D. A. ^{[3
]}

Gerhardt, S. P. ^{[3
]}

Boyer, M. D. ^{[3
]}

Andre, R. ^{[3
]}

Kolemen, E. ^{[3
]}

Taira, K. ^{[4
]}

机构：

[1] Princeton Univ, Dept Mech & Aerosp Engn, Princeton, NJ 08544 USA

[2] Columbia Univ, Dept Appl Phys & Appl Math, New York, NY 10027 USA

[3] Princeton Plasma Phys Lab, Princeton, NJ 08544 USA

[4] Florida State Univ, Dept Mech Engn, Tallahassee, FL 32310 USA

来源：

NUCLEAR FUSION | 2016年 / 56卷 / 03期

关键词：

magnetic confinement; feedback control; rotation Control; neutral beam injection; neoclassical toroidal viscosity; NSTX; TRANSPORT; PROFILES; ENERGY;

D O I：

10.1088/0029-5515/56/3/036023

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：

A model-based feedback system is presented to control plasma rotation in a magnetically confined toroidal fusion device, to maintain plasma stability for long-pulse operation. This research uses experimental measurements from the National Spherical Torus Experiment (NSTX) and is aimed at controlling plasma rotation using two different types of actuation: momentum from injected neutral beams and neoclassical toroidal viscosity generated by three-dimensional applied magnetic fields. Based on the data-driven model obtained, a feedback controller is designed, and predictive simulations using the TRANSP plasma transport code show that the controller is able to attain desired plasma rotation profiles given practical constraints on the actuators and the available measurements of rotation.

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