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

A. Huber; G. Arnoux; M. N.A. Beurskens; S. A. Bozhenkov; S. Brezinsek; T. Eich; C. Fuchs; W. Fundamenski; S. Jachmich; U. Kruezi; M. Lehnen; A. Loarte; G. F. Matthews; Ph Mertens; P. D. Morgan; V. Philipps; R. A. Pitts; V. Riccardo; U. Samm; B. Schweer; G. Sergienko; M. Stamp

doi:10.1016/j.jnucmat.2010.10.061

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

A. Huber, G. Arnoux, M. N.A. Beurskens, S. A. Bozhenkov, S. Brezinsek, T. Eich, C. Fuchs, W. Fundamenski, S. Jachmich, U. Kruezi, M. Lehnen, A. Loarte, G. F. Matthews, Ph Mertens, P. D. Morgan, V. Philipps, R. A. Pitts, V. Riccardo, U. Samm, B. SchweerG. Sergienko, M. Stamp

Laboratory for Plasma Physics

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

Abstract

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.The ELMs provoke strong radiation losses, mostly confined to the inner divertor region. Large type I ELMs with ΔW_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.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.

Original language	English
Pages (from-to)	S821-S827
Journal	Journal of Nuclear Materials
Volume	415
Issue number	1 SUPPL
DOIs	https://doi.org/10.1016/j.jnucmat.2010.10.061
Publication status	Published - 1 Aug 2011

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Huber, A., Arnoux, G., Beurskens, M. N. A., Bozhenkov, S. A., Brezinsek, S., Eich, T., Fuchs, C., Fundamenski, W., Jachmich, S., Kruezi, U., Lehnen, M., Loarte, A., Matthews, G. F., Mertens, P., Morgan, P. D., Philipps, V., Pitts, R. A., Riccardo, V., Samm, U., ... Stamp, M. (2011). Radiation loads onto plasma-facing components of JET during transient events - Experimental results and implications for ITER. Journal of Nuclear Materials, 415(1 SUPPL), S821-S827. https://doi.org/10.1016/j.jnucmat.2010.10.061

@article{a6657a4455cd473b9e217398bb7fc903,

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

abstract = "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.The ELMs provoke strong radiation losses, mostly confined to the inner divertor region. Large type I ELMs with ΔWELM ≥ 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.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.",

author = "A. Huber and G. Arnoux and Beurskens, {M. N.A.} and Bozhenkov, {S. A.} and S. Brezinsek and T. Eich and C. Fuchs and W. Fundamenski and S. Jachmich and U. Kruezi and M. Lehnen and A. Loarte and Matthews, {G. F.} and Ph Mertens and Morgan, {P. D.} and V. Philipps and Pitts, {R. A.} and V. Riccardo and U. Samm and B. Schweer and G. Sergienko and M. Stamp",

year = "2011",

month = aug,

day = "1",

doi = "10.1016/j.jnucmat.2010.10.061",

language = "English",

volume = "415",

pages = "S821--S827",

journal = "Journal of Nuclear Materials",

issn = "0022-3115",

number = "1 SUPPL",

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Huber, A, Arnoux, G, Beurskens, MNA, Bozhenkov, SA, Brezinsek, S, Eich, T, Fuchs, C, Fundamenski, W, Jachmich, S, Kruezi, U, Lehnen, M, Loarte, A, Matthews, GF, Mertens, P, Morgan, PD, Philipps, V, Pitts, RA, Riccardo, V, Samm, U, Schweer, B, Sergienko, G & Stamp, M 2011, 'Radiation loads onto plasma-facing components of JET during transient events - Experimental results and implications for ITER', Journal of Nuclear Materials, vol. 415, no. 1 SUPPL, pp. S821-S827. https://doi.org/10.1016/j.jnucmat.2010.10.061

TY - JOUR

T1 - Radiation loads onto plasma-facing components of JET during transient events - Experimental results and implications for ITER

AU - Huber, A.

AU - Arnoux, G.

AU - Beurskens, M. N.A.

AU - Bozhenkov, S. A.

AU - Brezinsek, S.

AU - Eich, T.

AU - Fuchs, C.

AU - Fundamenski, W.

AU - Jachmich, S.

AU - Kruezi, U.

AU - Lehnen, M.

AU - Loarte, A.

AU - Matthews, G. F.

AU - Mertens, Ph

AU - Morgan, P. D.

AU - Philipps, V.

AU - Pitts, R. A.

AU - Riccardo, V.

AU - Samm, U.

AU - Schweer, B.

AU - Sergienko, G.

AU - Stamp, M.

PY - 2011/8/1

Y1 - 2011/8/1

N2 - 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.The ELMs provoke strong radiation losses, mostly confined to the inner divertor region. Large type I ELMs with ΔWELM ≥ 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.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.

AB - 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.The ELMs provoke strong radiation losses, mostly confined to the inner divertor region. Large type I ELMs with ΔWELM ≥ 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.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.

UR - http://www.scopus.com/inward/record.url?scp=80052532209&partnerID=8YFLogxK

U2 - 10.1016/j.jnucmat.2010.10.061

DO - 10.1016/j.jnucmat.2010.10.061

M3 - Article

AN - SCOPUS:80052532209

SN - 0022-3115

VL - 415

SP - S821-S827

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

IS - 1 SUPPL

ER -

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

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