Radiation loads onto plasma-facing components of JET during transient events - Experimental results and implications for ITER

被引：15

作者：

Huber, A. ^{[1
]}

Arnoux, G. ^{[2
]}

Beurskens, M. N. A. ^{[2
]}

Bozhenkov, S. A. ^{[1
]}

Brezinsek, S. ^{[1
]}

Eich, T. ^{[3
]}

Fuchs, C. ^{[3
]}

Fundamenski, W. ^{[2
]}

Jachmich, S. ^{[4
]}

Kruezi, U.

Lehnen, M. ^{[1
]}

Loarte, A. ^{[5
]}

Matthews, G. F. ^{[2
]}

Mertens, Ph ^{[1
]}

Morgan, P. D. ^{[2
]}

Philipps, V. ^{[1
]}

Pitts, R. A. ^{[5
]}

Riccardo, V. ^{[2
]}

Samm, U. ^{[1
]}

Schweer, B. ^{[1
]}

Sergienko, G. ^{[1
]}

Stamp, M. ^{[2
]}

机构：

[1] Forschungszentrum Julich, Inst Energy Res Plasma Phys, EURATOM Assoc, D-52425 Julich, Germany

[2] Culham Sci Ctr, Euratom CCFE Fus Assoc, Abingdon OX14 3DB, Oxon, England

[3] EURATOM, Max Planck Inst Plasmaphys, D-85748 Garching, Germany

[4] Assoc EURATOM Belgian State, Plasma Phys Lab, ERM KMS, B-61000 Brussels, Belgium

[5] ITER Org, Cadarache, France

来源：

JOURNAL OF NUCLEAR MATERIALS | 2011年 / 415卷 / 01期

关键词：

DIVERTOR; ENERGY; DISRUPTIONS; ELMS;

D O I：

10.1016/j.jnucmat.2010.10.061

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This contribution examines the impact on plasma radiation and on power load to the divertor (i) of large type I ELMs with energies 0.25-1.3 MJ in high current H-mode JET discharges and (ii) of disruptions. (i) The ELMs provoke strong radiation losses, mostly confined to the inner divertor region. Large type I ELMs with Delta W-ELM >= 0.72 MJ show enhanced radiation losses which are associated with the ablation of carbon layers in the inner divertor. Such large ELMs are usually followed by a phase of type III ELMs with an increased radiation in the plasma core. (ii) The unmitigated disruptions exhibit small radiation fractions with strong poloidal radiation asymmetry during the thermal quench, which could cause Be melting by radiation in ITER. In dedicated experiments on massive gas injection, about 60% of the thermal energy and a significant part of the magnetic energy was converted in radiation and spread uniformly over the first walls. (C) 2010 Published by Elsevier B.V..

引用

页码：S821 / S827

页数：7

共 21 条

[1]

[Anonymous], Atomic Data and Analysis Structure

[2]

Bozhenkov S.A., 2009, 36 EPS C PLASM PHY E, V33E, P1180

[3] Overview of material re-deposition and fuel retention studies at JET with the Gas Box divertor [J].

Coad, JP ;

Likonen, J ;

Rubel, M ;

Vainonen-Ahlgren, E ;

Hole, DE ;

Sajavaara, T ;

Renvall, T ;

Matthews, GF .

NUCLEAR FUSION, 2006, 46 (02) :350-366

[4] Radiation distribution and energy balance during type-I ELMs in ASDEX Upgrade [J].

Fuchs, JC ;

Eich, T ;

Herrmann, A ;

Mast, KF .

JOURNAL OF NUCLEAR MATERIALS, 2005, 337 (1-3) :756-760

[5] Upgraded bolometer system on JET for improved radiation measurements [J].

Huber, A. ;

McCormick, K. ;

Andrew, P. ;

Beaumont, P. ;

Dalley, S. ;

Fink, J. ;

Fuchs, J. C. ;

Fullard, K. ;

Fundamenski, W. ;

Ingessond, L. C. ;

Mast, F. ;

Jachmich, S. ;

Matthews, G. F. ;

Mertens, Ph. ;

Philipps, V. ;

Pitts, R. A. ;

Sanders, S. ;

Zeidner, W. .

FUSION ENGINEERING AND DESIGN, 2007, 82 (5-14) :1327-1334

[6] Plasma radiation distribution and radiation loads onto the vessel during transient events in JET [J].

Huber, A. ;

Pitts, R. A. ;

Loarte, A. ;

Philipps, V. ;

Andrew, P. ;

Brezinsek, S. ;

Coad, J. P. ;

Eich, T. ;

Fuchs, J. C. ;

Fundamenski, W. ;

Jachmich, S. ;

Matthews, G. F. ;

McCormick, K. ;

Mertens, Ph. ;

Rapp, J. ;

Sergienko, G. ;

Stamp, M. F. .

JOURNAL OF NUCLEAR MATERIALS, 2009, 390-91 :830-834

[7] Nonlinear Impact of Edge Localized Modes on Carbon Erosion in the Divertor of the JET Tokamak [J].

Kreter, A. ;

Esser, H. G. ;

Brezinsek, S. ;

Coad, J. P. ;

Kirschner, A. ;

Fundamenski, W. ;

Philipps, V. ;

Pitts, R. A. ;

Widdowson, A. .

PHYSICAL REVIEW LETTERS, 2009, 102 (04)

[8]

Kruezi U., 2009, 36 EPS C PLASM PHY E, V33E

[9]

LEHNEN M, 2009, 36 EPS C PLASM PHY E, V33

[10] Characteristics of type I ELM energy and particle losses in existing devices and their extrapolation to ITER [J].

Loarte, A ;

Saibene, G ;

Sartori, R ;

Campbell, D ;

Becoulet, M ;

Horton, L ;

Eich, T ;

Herrmann, A ;

Matthews, G ;

Asakura, N ;

Chankin, A ;

Leonard, A ;

Porter, G ;

Federici, G ;

Janeschitz, G ;

Shimada, M ;

Sugihara, M .

PLASMA PHYSICS AND CONTROLLED FUSION, 2003, 45 (09) :1549-1569

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