This title appears in the Scientific Report :
2007
Please use the identifier:
http://dx.doi.org/10.1016/j.jnucmat.2007.01.124 in citations.
Improved radiation measurements on JET - first results from an upgraded bolometer system
Improved radiation measurements on JET - first results from an upgraded bolometer system
To improve the quality of radiation measurements, two new bolometric cameras with horizontal and vertical views of the plasma cross-section have been installed on JET. These cameras provide measurements with significantly improved spatial resolution, allowing the divertor and main chamber radiation...
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Personal Name(s): | Huber, A. |
---|---|
McCormick, K. / Andrew, P. / de Baar, M. R. / Beaumont, P. / Dalley, S. / Fink, J. / Fuchs, J. C. / Fullard, K. / Fundamenski, W. / Ingesson, L. C. / Kirnev, G. / Lomas, P. / Mast, F. / Jachmich, S. / Matthews, G. F. / Mertens, Ph. / Meigs, A. / Philipps, V. / Rapp, J. / Saibene, G. / Sanders, S. / Sartori, R. / Stamp, M. F. / Zeidner, W. / JET-EFDA, Contrib. | |
Contributing Institute: |
Plasmaphysik; IEF-4 |
Published in: | Journal of nuclear materials, 363-365 (2007) S. 365 - 370 |
Imprint: |
Amsterdam [u.a.]
Elsevier Science
2007
|
Physical Description: |
365 - 370 |
DOI: |
10.1016/j.jnucmat.2007.01.124 |
Document Type: |
Journal Article |
Research Program: |
Fusion |
Series Title: |
Journal of Nuclear Materials
363-365 |
Subject (ZB): | |
Publikationsportal JuSER |
To improve the quality of radiation measurements, two new bolometric cameras with horizontal and vertical views of the plasma cross-section have been installed on JET. These cameras provide measurements with significantly improved spatial resolution, allowing the divertor and main chamber radiation fractions to be clearly resolved. Analysis of radiation profiles under attached and detached divertor conditions as well during the formation of an X-point MARFE (XPM) close to an ohmic density limit are presented. The radiation power fraction gamma = P-rad/P-heat increases from 0.5 to 0.8 just before XPM onset. A large fraction of this radiation is located in the divertor (p(rad)(div)/p(rad)(tot)= 0.56 at low density and about 0.67 at XPM onset). In addition, spatial distributions of radiation in recent ITER-like configuration discharges are presented. (c) 2007 Elsevier B.V. All rights reserved. |