Target particle and heat loads in low-triangularity L-mode plasmas in JET with carbon and beryllium/tungsten walls

被引：17

作者：

Groth, M. ^{[2
]}

Brezinsek, S. ^{[3
]}

Belo, P. ^{[4
]}

Corrigan, G. ^{[5
]}

Harting, D. ^{[3
]}

Wiesen, S. ^{[3
]}

Beurskens, M. N. A. ^{[5
]}

Brix, M. ^{[5
]}

Clever, M. ^{[3
]}

Coenen, J. W. ^{[3
]}

Eich, T. ^{[6
]}

Flanagan, J. ^{[5
]}

Giroud, C. ^{[5
]}

Huber, A. ^{[3
]}

Jachmich, S. ^{[7
]}

Kruezi, U. ^{[3
]}

Lehnen, M. ^{[3
]}

Lowry, C. ^{[8
]}

Maggi, C. F. ^{[6
]}

Marsen, S. ^{[9
]}

Meigs, A. G. ^{[5
]}

Sergienko, G. ^{[3
]}

Sieglin, B. ^{[6
]}

Silva, C. ^{[5
]}

Sirinelli, A. ^{[4
]}

Stamp, M. F. ^{[4
]}

van Rooij, G. J. ^{[10
]}

机构：

[1] JET EFDA, Culham Sci Ctr, Abingdon OX14 3DB, Oxon, England

[2] Aalto Univ, Assoc EURATOM Tekes, Espoo 0215, Finland

[3] Assoc EURATOM FZJ Julich, Inst Energy & Climate Res, Julich, Germany

[4] Assoc EURATOM IST, Inst Plasmas & Nucl Fus, Lisbon, Portugal

[5] EURATOM, Culham Sci Ctr, Culham Ctr Fus Energy, Abingdon, Oxon, England

[6] EURATOM, Max Planck Inst Plasma Phys, Garching, Germany

[7] Assoc EURATOM Belgium State, Plasma Phys Lab, Brussels, Belgium

[8] Culham Sci Ctr, EFDA Close Support Unit, Abingdon, Oxon, England

[9] EURATOM, Max Planck Inst Plasma Phys, Greifswald, Germany

[10] EURATOM, FOM, FOM Inst DIFFER, Nieuwegein, Netherlands

来源：

JOURNAL OF NUCLEAR MATERIALS | 2013年 / 438卷

基金：

英国工程与自然科学研究理事会;

关键词：

FLUX;

D O I：

10.1016/j.jnucmat.2013.01.072

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Divertor radiation profiles, and power and particle fluxes to the target have been measured in attached JET L-mode plasmas with carbon and beryllium/tungsten wall materials. In the beryllium/tungsten configuration, factors of 2-3 higher power loads and peak temperatures at the low field side target were observed in high-recycling scrape-off layer conditions, whilst in close-to-sheath-limited conditions almost identical plasmas were obtained. The 30% reduction in total radiation with the beryllium/tungsten wall is consistent with a reduction of carbon as the dominant impurity radiator; however similar ion current to the plates, emission from recycling neutrals and neutral pressures in the pumping plenum were measured. Simulations with the EDGDE2/EIRENE code of these plasmas indicate a reduction of the total divertor radiation when carbon is omitted, but significantly higher power loads in high-recycling and detached conditions are predicted than measured. (C) 2013 Euratom. Published by Elsevier B. V. All rights reserved.

引用

页码：S175 / S179

页数：5

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