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Multivariable shape control development on the DIII-D tokamak [electronic resource].

Published
Washington, D.C. : United States. Dept. of Energy. Office of Energy Research, 1997.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
5 pages : digital, PDF file
Additional Creators
General Atomic Company, United States. Department of Energy. Office of Energy Research, and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
In this paper, the authors describe recent work on plasma shape and position control at DIII-D. This control consists of two equally challenging problems--the problem of identifying what the plasma actually looks like in real time, i.e. measuring the parameters to be controlled, and the task of determining the feedback algorithm which best controls these plasma parameters in a multiple input-output system. Recent implementation of the EFIT plasma equilibrium reconstruction algorithm in real time code which produces a new equilibrium estimate every 1.5 ms seems to solve the longstanding problem of obtaining sufficiently accurate plasma shape and position estimation. Stabilization of the open-loop unstable vertical motion is also viewed as a solved problem. The primary remaining problem appears to be how best to command the power supplies to achieve a desired shaping control response. They will describe the effort to understand and apply linearized models of plasma evolution to development and implementation of multivariable plasma controllers.
Report Numbers
E 1.99:ga--a22729
E 1.99: conf-971065--
conf-971065--
ga--a22729
Subject(s)
Other Subject(s)
Note
Published through SciTech Connect.
11/01/1997.
"ga--a22729"
" conf-971065--"
"DE98001833"
17. IEEE/NPSS symposium on fusion engineering, San Diego, CA (United States), 6-10 Oct 1997.
Humphreys, D.A.; Walker, M.L.; Ferron, J.R.
Funding Information
AC03-89ER51114
View MARC record | catkey: 14742005