High-heat-flux-exposure-experiments of a tungsten-test-limiter at TEXTOR-94

M. Wada; T. Tanabe; V. Philipps; B. Unterberg; A. Pospieszczyk; B. Schweer; J. Rapp; Y. Ueda; K. Ohya; T. Ohgo; N. Noda

doi:10.1016/S0022-3115(98)00258-X

High-heat-flux-exposure-experiments of a tungsten-test-limiter at TEXTOR-94

M. Wada, T. Tanabe, V. Philipps, B. Unterberg, A. Pospieszczyk, B. Schweer, J. Rapp, Y. Ueda, K. Ohya, T. Ohgo, N. Noda

Research output: Contribution to journal › Article › peer-review

10 Scopus citations

Abstract

To test the performance of tungsten as a plasma facing material, a small test limiter made of solid pure W was immersed in a TEXTOR plasma. A surface temperature in excess of 3000 K and the rate of temperature increase close to 2000 K/s was measured for the auxiliary heating conditions. These values corresponded to a power flux density of more than 40 MW/m² based on the calculations of a heat transfer model. The test limiter showed no observable degradation after exposure to this high heat flux density. The oxygen flux from the test limiter showed an increase during intense plasma exposure. However, no enhancement in the normalized W yield was observed when the W release was normalized to the C and O flux to the limiter, and the W release appeared to be dominated by physical sputtering.

Original language	English
Pages (from-to)	853-857
Number of pages	5
Journal	Journal of Nuclear Materials
Volume	258-263
Issue number	PART 1 A
DOIs	https://doi.org/10.1016/S0022-3115(98)00258-X
State	Published - Oct 1998
Externally published	Yes

Funding

The authors are grateful for the continuous cooperation from Prof. Wolf, director of the fusion program at Jülich Research Center, and TEXTOR team members. This work was carried out under an IEA contract of the Japan-EC cooperation and was partly supported by a Grant-in-Aid from the Ministry of Education, Culture, and Science, Japan.

Funders	Funder number
Ministerie van Onderwijs, Cultuur en Wetenschap

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This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/S0022-3115(98)00258-X

Cite this

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abstract = "To test the performance of tungsten as a plasma facing material, a small test limiter made of solid pure W was immersed in a TEXTOR plasma. A surface temperature in excess of 3000 K and the rate of temperature increase close to 2000 K/s was measured for the auxiliary heating conditions. These values corresponded to a power flux density of more than 40 MW/m2 based on the calculations of a heat transfer model. The test limiter showed no observable degradation after exposure to this high heat flux density. The oxygen flux from the test limiter showed an increase during intense plasma exposure. However, no enhancement in the normalized W yield was observed when the W release was normalized to the C and O flux to the limiter, and the W release appeared to be dominated by physical sputtering.",

author = "M. Wada and T. Tanabe and V. Philipps and B. Unterberg and A. Pospieszczyk and B. Schweer and J. Rapp and Y. Ueda and K. Ohya and T. Ohgo and N. Noda",

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AU - Philipps, V.

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AU - Pospieszczyk, A.

AU - Schweer, B.

AU - Rapp, J.

AU - Ueda, Y.

AU - Ohya, K.

AU - Ohgo, T.

AU - Noda, N.

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High-heat-flux-exposure-experiments of a tungsten-test-limiter at TEXTOR-94

Abstract

Funding

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