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Title: A digital control system for external magnetohydrodynamic modes in tokamak plasmas

Abstract

A feedback system for controlling external, long-wavelength magnetohydrodynamic activity is described. The system is comprised of a network of localized magnetic pickup and control coils driven by four independent, low-latency field-programable gate array controllers. The control algorithm incorporates digital spatial filtering to resolve low mode number activity, temporal filtering to correct for frequency-dependent amplitude and phase transfer effects in the control hardware, and a Kalman filter to distinguish the unstable plasma mode from noise.

Authors:
; ; ; ; ;  [1]
  1. Department of Applied Physics and Applied Mathematics, Columbia University, New York, New York 10027 (United States)
Publication Date:
OSTI Identifier:
22053467
Resource Type:
Journal Article
Journal Name:
Review of Scientific Instruments
Additional Journal Information:
Journal Volume: 80; Journal Issue: 4; Other Information: (c) 2009 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0034-6748
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; ALGORITHMS; AMPLITUDES; CONTROL; CONTROL SYSTEMS; FEEDBACK; FREQUENCY DEPENDENCE; PLASMA; PLASMA INSTABILITY; TOKAMAK DEVICES; WAVELENGTHS

Citation Formats

Hanson, J M, Klein, A J, Mauel, M E, Maurer, D A, Navratil, G A, and Pedersen, T Sunn. A digital control system for external magnetohydrodynamic modes in tokamak plasmas. United States: N. p., 2009. Web. doi:10.1063/1.3112607.
Hanson, J M, Klein, A J, Mauel, M E, Maurer, D A, Navratil, G A, & Pedersen, T Sunn. A digital control system for external magnetohydrodynamic modes in tokamak plasmas. United States. https://doi.org/10.1063/1.3112607
Hanson, J M, Klein, A J, Mauel, M E, Maurer, D A, Navratil, G A, and Pedersen, T Sunn. 2009. "A digital control system for external magnetohydrodynamic modes in tokamak plasmas". United States. https://doi.org/10.1063/1.3112607.
@article{osti_22053467,
title = {A digital control system for external magnetohydrodynamic modes in tokamak plasmas},
author = {Hanson, J M and Klein, A J and Mauel, M E and Maurer, D A and Navratil, G A and Pedersen, T Sunn},
abstractNote = {A feedback system for controlling external, long-wavelength magnetohydrodynamic activity is described. The system is comprised of a network of localized magnetic pickup and control coils driven by four independent, low-latency field-programable gate array controllers. The control algorithm incorporates digital spatial filtering to resolve low mode number activity, temporal filtering to correct for frequency-dependent amplitude and phase transfer effects in the control hardware, and a Kalman filter to distinguish the unstable plasma mode from noise.},
doi = {10.1063/1.3112607},
url = {https://www.osti.gov/biblio/22053467}, journal = {Review of Scientific Instruments},
issn = {0034-6748},
number = 4,
volume = 80,
place = {United States},
year = {Wed Apr 15 00:00:00 EDT 2009},
month = {Wed Apr 15 00:00:00 EDT 2009}
}