Local emission and core concentration of tungsten in TEXTOR-94 plasmas operated with tungsten test and poloidal limiters

M. Wada; T. Ohgo; A. Pospieszczyk; A. Huber; G. Sergienko; T. Tanabe; W. Biel; K. Kondo; K. Ohya; V. Philipps; G. Bertschinger; J. Rapp; B. Schweer; N. Noda

doi:10.1016/S0022-3115(00)00533-X

Local emission and core concentration of tungsten in TEXTOR-94 plasmas operated with tungsten test and poloidal limiters

M. Wada, T. Ohgo, A. Pospieszczyk, A. Huber, G. Sergienko, T. Tanabe, W. Biel, K. Kondo, K. Ohya, V. Philipps, G. Bertschinger, J. Rapp, B. Schweer, N. Noda

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

4 Scopus citations

Abstract

The correlation between the local WI light emission from W limiters and the W quasi-continuum light emission from the core plasma measured by the XUV spectrometer was investigated in the TEXTOR-94 limiter tokamak. The W quasi-continuum light emission showed a linear dependence against the line spectrum emission from neutral W from the metallic test limiter immersed in neutral beam (NBI) heated plasmas. The surface of the poloidal limiter made of vacuum-plasma-spray coating of W (VPS-W) was covered by a carbon layer during the time it was kept in the shadow of graphite ALT-II limiter. As a result of the carbon coating, the contribution to the W quasi-continuum intensity by the poloidal limiter was smaller than that by the test limiter, despite the fact that the surface area of the poloidal limiter facing the plasma was about seven times larger than that of the test limiter.

Original language	English
Pages (from-to)	768-772
Number of pages	5
Journal	Journal of Nuclear Materials
Volume	290-293
DOIs	https://doi.org/10.1016/S0022-3115(00)00533-X
State	Published - Mar 2001
Externally published	Yes

Funding

This work was done under IEA contract for TEXTOR cooperation and was partly supported by a Grant-in-aid for Scientific Research of the Ministry of Education, Science and Culture, Japan.

Funders	Funder number
Ministry of Education, Culture, Sports, Science and Technology

UN SDGs

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

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10.1016/S0022-3115(00)00533-X

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Wada, M., Ohgo, T., Pospieszczyk, A., Huber, A., Sergienko, G., Tanabe, T., Biel, W., Kondo, K., Ohya, K., Philipps, V., Bertschinger, G., Rapp, J., Schweer, B., & Noda, N. (2001). Local emission and core concentration of tungsten in TEXTOR-94 plasmas operated with tungsten test and poloidal limiters. Journal of Nuclear Materials, 290-293, 768-772. https://doi.org/10.1016/S0022-3115(00)00533-X

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title = "Local emission and core concentration of tungsten in TEXTOR-94 plasmas operated with tungsten test and poloidal limiters",

abstract = "The correlation between the local WI light emission from W limiters and the W quasi-continuum light emission from the core plasma measured by the XUV spectrometer was investigated in the TEXTOR-94 limiter tokamak. The W quasi-continuum light emission showed a linear dependence against the line spectrum emission from neutral W from the metallic test limiter immersed in neutral beam (NBI) heated plasmas. The surface of the poloidal limiter made of vacuum-plasma-spray coating of W (VPS-W) was covered by a carbon layer during the time it was kept in the shadow of graphite ALT-II limiter. As a result of the carbon coating, the contribution to the W quasi-continuum intensity by the poloidal limiter was smaller than that by the test limiter, despite the fact that the surface area of the poloidal limiter facing the plasma was about seven times larger than that of the test limiter.",

author = "M. Wada and T. Ohgo and A. Pospieszczyk and A. Huber and G. Sergienko and T. Tanabe and W. Biel and K. Kondo and K. Ohya and V. Philipps and G. Bertschinger and J. Rapp and B. Schweer and N. Noda",

year = "2001",

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doi = "10.1016/S0022-3115(00)00533-X",

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Wada, M, Ohgo, T, Pospieszczyk, A, Huber, A, Sergienko, G, Tanabe, T, Biel, W, Kondo, K, Ohya, K, Philipps, V, Bertschinger, G, Rapp, J, Schweer, B & Noda, N 2001, 'Local emission and core concentration of tungsten in TEXTOR-94 plasmas operated with tungsten test and poloidal limiters', Journal of Nuclear Materials, vol. 290-293, pp. 768-772. https://doi.org/10.1016/S0022-3115(00)00533-X

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T1 - Local emission and core concentration of tungsten in TEXTOR-94 plasmas operated with tungsten test and poloidal limiters

AU - Wada, M.

AU - Ohgo, T.

AU - Pospieszczyk, A.

AU - Huber, A.

AU - Sergienko, G.

AU - Tanabe, T.

AU - Biel, W.

AU - Kondo, K.

AU - Ohya, K.

AU - Philipps, V.

AU - Bertschinger, G.

AU - Rapp, J.

AU - Schweer, B.

AU - Noda, N.

PY - 2001/3

Y1 - 2001/3

N2 - The correlation between the local WI light emission from W limiters and the W quasi-continuum light emission from the core plasma measured by the XUV spectrometer was investigated in the TEXTOR-94 limiter tokamak. The W quasi-continuum light emission showed a linear dependence against the line spectrum emission from neutral W from the metallic test limiter immersed in neutral beam (NBI) heated plasmas. The surface of the poloidal limiter made of vacuum-plasma-spray coating of W (VPS-W) was covered by a carbon layer during the time it was kept in the shadow of graphite ALT-II limiter. As a result of the carbon coating, the contribution to the W quasi-continuum intensity by the poloidal limiter was smaller than that by the test limiter, despite the fact that the surface area of the poloidal limiter facing the plasma was about seven times larger than that of the test limiter.

AB - The correlation between the local WI light emission from W limiters and the W quasi-continuum light emission from the core plasma measured by the XUV spectrometer was investigated in the TEXTOR-94 limiter tokamak. The W quasi-continuum light emission showed a linear dependence against the line spectrum emission from neutral W from the metallic test limiter immersed in neutral beam (NBI) heated plasmas. The surface of the poloidal limiter made of vacuum-plasma-spray coating of W (VPS-W) was covered by a carbon layer during the time it was kept in the shadow of graphite ALT-II limiter. As a result of the carbon coating, the contribution to the W quasi-continuum intensity by the poloidal limiter was smaller than that by the test limiter, despite the fact that the surface area of the poloidal limiter facing the plasma was about seven times larger than that of the test limiter.

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JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

ER -

Local emission and core concentration of tungsten in TEXTOR-94 plasmas operated with tungsten test and poloidal limiters

Abstract

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