High-density discharges with gettered torus walls in DITE

A new regime of operation of the DITE Tokamak is described, characterized by higher electron densities around 10 to the 20th /cu m, longer energy containment times around 30 msec, and values of the effective ion charge close to unity. This regime is made possible by evaporating titanium onto the tor...

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Bibliographic Details
Published in:Nuclear fusion 1977-12, Vol.17 (6), p.1382-1385
Main Authors: Fielding, S.J, Hugill, J, McCracken, G.M, Paul, J.W.M, Prentice, R, Stott, P.E
Format: Article
Language:English
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Summary:A new regime of operation of the DITE Tokamak is described, characterized by higher electron densities around 10 to the 20th /cu m, longer energy containment times around 30 msec, and values of the effective ion charge close to unity. This regime is made possible by evaporating titanium onto the torus wall to act as a getter. With this getter, the hydrogen gas feed could be increased without a large influx of oxygen leading to cooling of outer plasma regions and disruptive instability, and the density could be raised beyond previous limits.
ISSN:0029-5515
1741-4326
DOI:10.1088/0029-5515/17/6/020