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Abstract

Electrical measurements of the basic discharge parameters such as loop volts, discharge current and the position of the plasma are important both for diagnostic and control purposes. The measurements are fairly straightforward using flux loops and pick-up coils mounted outside the plasma. The same measurements can also be used to determine the shape of the outermost flux surfaces and if combined with the plasma density and temperature can provide some information about the shape of the interior flux surfaces. Diamagnetic loop measurements are widely used to measure the total beta perpendicular to the plasma, but the reliability of this method is often in doubt. The special problems in applying these basic electrical measurement methods to large fusion devices will be discussed.

Additional information

Authors: STOTT P E JET JOINT UNDERTAKING, ABINGDON (UK), JET JOINT UNDERTAKING, ABINGDON (UK)
Bibliographic Reference: COURSE ON DIAGNOSTICS FOR FUSION REACTOR CONDITIONS, VARENNA, COMO (ITALY), SEPT. 6-17, 1982 PP. 403-418, 1983, ISBN 0-08-031161-X WRITE TO PERGAMON PRESS LTD., HEADINGTON HILL HALL, OXFORD OX3 0BW (ENGLAND), PRICE: UKL 47.
Record Number: 1989122096900 / Last updated on: 1987-01-01
Category: PUBLICATION
Available languages: en