skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Plasma Shape Control on the National Spherical Torus Experiment (NSTX) using Real-time Equilibrium Reconstruction

Abstract

Plasma shape control using real-time equilibrium reconstruction has been implemented on the National Spherical Torus Experiment (NSTX). The rtEFIT code originally developed for use on DIII-D was adapted for use on NSTX. The real-time equilibria provide calculations of the flux at points on the plasma boundary, which is used as input to a shape control algorithm known as isoflux control. The flux at the desired boundary location is compared to a reference flux value, and this flux error is used as the basic feedback quantity for the poloidal-field coils on NSTX. The hardware that comprises the control system is described, as well as the software infrastructure. Examples of precise boundary control are also presented.

Authors:
; ; ; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Princeton Plasma Physics Lab., Princeton, NJ (US)
Sponsoring Org.:
USDOE Office of Science (SC) (US)
OSTI Identifier:
839126
Report Number(s):
PPPL-4063
TRN: US0501598
DOE Contract Number:  
AC02-76CH03073
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: 15 Apr 2005
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ALGORITHMS; CONTROL SYSTEMS; DOUBLET-3 DEVICE; FEEDBACK; PLASMA; SHAPE; AUTOMATIC CONTROL; EQUILIBRIUM, MHD; SPHERICAL TORUS

Citation Formats

Gates, D A, Ferron, J R, Bell, M, Gibney, T, Johnson, R, Marsala, R J, Mastrovito, D, Menard, J E, Mueller, D, Penaflor, B, Sabbagh, S A, and Stevenson, T. Plasma Shape Control on the National Spherical Torus Experiment (NSTX) using Real-time Equilibrium Reconstruction. United States: N. p., 2005. Web. doi:10.2172/839126.
Gates, D A, Ferron, J R, Bell, M, Gibney, T, Johnson, R, Marsala, R J, Mastrovito, D, Menard, J E, Mueller, D, Penaflor, B, Sabbagh, S A, & Stevenson, T. Plasma Shape Control on the National Spherical Torus Experiment (NSTX) using Real-time Equilibrium Reconstruction. United States. https://doi.org/10.2172/839126
Gates, D A, Ferron, J R, Bell, M, Gibney, T, Johnson, R, Marsala, R J, Mastrovito, D, Menard, J E, Mueller, D, Penaflor, B, Sabbagh, S A, and Stevenson, T. Fri . "Plasma Shape Control on the National Spherical Torus Experiment (NSTX) using Real-time Equilibrium Reconstruction". United States. https://doi.org/10.2172/839126. https://www.osti.gov/servlets/purl/839126.
@article{osti_839126,
title = {Plasma Shape Control on the National Spherical Torus Experiment (NSTX) using Real-time Equilibrium Reconstruction},
author = {Gates, D A and Ferron, J R and Bell, M and Gibney, T and Johnson, R and Marsala, R J and Mastrovito, D and Menard, J E and Mueller, D and Penaflor, B and Sabbagh, S A and Stevenson, T},
abstractNote = {Plasma shape control using real-time equilibrium reconstruction has been implemented on the National Spherical Torus Experiment (NSTX). The rtEFIT code originally developed for use on DIII-D was adapted for use on NSTX. The real-time equilibria provide calculations of the flux at points on the plasma boundary, which is used as input to a shape control algorithm known as isoflux control. The flux at the desired boundary location is compared to a reference flux value, and this flux error is used as the basic feedback quantity for the poloidal-field coils on NSTX. The hardware that comprises the control system is described, as well as the software infrastructure. Examples of precise boundary control are also presented.},
doi = {10.2172/839126},
url = {https://www.osti.gov/biblio/839126}, journal = {},
number = ,
volume = ,
place = {United States},
year = {2005},
month = {4}
}