This title appears in the Scientific Report :
2003
Please use the identifier:
http://dx.doi.org/10.1016/S0022-3115(02)01334-X in citations.
Performance and erosion of a tungsten brush limiter exposed at the TEXTOR tokamak
Performance and erosion of a tungsten brush limiter exposed at the TEXTOR tokamak
To examine the performance of a castellated structure under plasma loading, a hemispherical solid tungsten brush limiter was exposed to the plasma in the TEXTOR-94 tokamak. Due to the thermally isolated column of W segments, IR camera showed a non-uniform temperature distribution. The maximum incide...
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Personal Name(s): | Hirai, T. |
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Philipps, V. / Huber, A. / Sergienko, G. / Linke, J. / Wakui, T. / Tanabe, T. / Rubel, M. / Wada, M. / Ohgo, T. / Pospieszczyk, A. / Ohya, K. / Barabash, V. | |
Contributing Institute: |
Institut für Plasmaphysik; IPP Werkstoffstruktur und Eigenschaften; IWV-2 |
Published in: | Journal of nuclear materials, 313-316 (2003) S. 67 - 71 |
Imprint: |
Amsterdam [u.a.]
Elsevier Science
2003
|
Physical Description: |
67 - 71 |
DOI: |
10.1016/S0022-3115(02)01334-X |
Document Type: |
Journal Article |
Research Program: |
Kernfusion und Plasmaforschung |
Series Title: |
Journal of Nuclear Materials
313-316 |
Subject (ZB): | |
Publikationsportal JuSER |
To examine the performance of a castellated structure under plasma loading, a hemispherical solid tungsten brush limiter was exposed to the plasma in the TEXTOR-94 tokamak. Due to the thermally isolated column of W segments, IR camera showed a non-uniform temperature distribution. The maximum incident power density was calculated to be about 35-40 MW/m(2). Concerning impurity generation, the structure did not show any particular effects. During plasma exposure, only some minor cracks developed in one of the columns, however, the crack propagation was interrupted by a groove. It can be concluded that the W brush limiter had comparable performance and superior mechanical behaviour compared to a solid W limiter. To study erosion and long-range transport of W atoms, a graphite limiter was exposed simultaneously with the brush limiter. As a result, the deposited W atoms via long-range transportation were estimated to be 10(15) cm(-2) shot(-1) at 46.5 cm from the plasma centre of TEXTOR. (C) 2003 Elsevier Science B.V. All rights reserved. |