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

I. R. Goumiri; Clarence Worth Rowley; S. A. Sabbagh; D. A. Gates; S. P. Gerhardt; M. D. Boyer; R. Andre; Egemen Kolemen; K. Taira

doi:10.1088/0029-5515/56/3/036023

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

I. R. Goumiri, Clarence Worth Rowley, S. A. Sabbagh, D. A. Gates, S. P. Gerhardt, M. D. Boyer, R. Andre, Egemen Kolemen, K. Taira

Research output: Contribution to journal › Article › peer-review

29 Scopus citations

Abstract

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.

Original language	English (US)
Article number	036023
Journal	Nuclear Fusion
Volume	56
Issue number	3
DOIs	https://doi.org/10.1088/0029-5515/56/3/036023
State	Published - Feb 19 2016

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics
Condensed Matter Physics

Keywords

NSTX
feedback control
magnetic confinement
neoclassical toroidal viscosity
neutral beam injection
rotation Control

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10.1088/0029-5515/56/3/036023

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title = "Modeling and control of plasma rotation for NSTX using neoclassical toroidal viscosity and neutral beam injection",

abstract = "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.",

keywords = "NSTX, feedback control, magnetic confinement, neoclassical toroidal viscosity, neutral beam injection, rotation Control",

author = "Goumiri, {I. R.} and Rowley, {Clarence Worth} and Sabbagh, {S. A.} and Gates, {D. A.} and Gerhardt, {S. P.} and Boyer, {M. D.} and R. Andre and Egemen Kolemen and K. Taira",

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AU - Goumiri, I. R.

AU - Rowley, Clarence Worth

AU - Sabbagh, S. A.

AU - Gates, D. A.

AU - Gerhardt, S. P.

AU - Boyer, M. D.

AU - Andre, R.

AU - Kolemen, Egemen

AU - Taira, K.

PY - 2016/2/19

Y1 - 2016/2/19

N2 - 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.

AB - 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.

KW - NSTX

KW - feedback control

KW - magnetic confinement

KW - neoclassical toroidal viscosity

KW - neutral beam injection

KW - rotation Control

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

Abstract

All Science Journal Classification (ASJC) codes

Keywords

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