Electron dynamics in the vicinity of Lower Hybrid antennas

被引：4
作者：
Valade, L. [1 ]
Caschera, E. [1 ]
Ghendrih, P. [1 ]
Sarazin, Y. [1 ]
Ekedahl, A. [1 ]
机构：
[1] CEA, IRFM, F-13108 St Paul Les Durance, France
来源：
JOINT VARENNA-LAUSANNE INTERNATIONAL WORKSHOP ON THE THEORY OF FUSION PLASMAS 2016 | 2016年 / 775卷
关键词：
TORE-SUPRA; DIVERTOR;
D O I：
10.1088/1742-6596/775/1/012015
中图分类号：
O35 [流体力学]; O53 [等离子体物理学];
学科分类号：
070204 ; 080103 ; 080704 ;
摘要：
Heating and current drive in tokamaks with Lower Hybrid (LH) waves appears to generate hot spots magnetically connected to LH antennas. Correlated to these spurious patterns of heat deposition, fast electron populations are also reported experimentally. A Vlasov-Poisson(1D, 1V) model is used to address this problem. External drive by waves with appropriate spectrum to describe the physics induced by LH antennas is considered. Fast electron tails, symmetric in velocity, are shown to build-up. In the range considered in this work, the energy content of these tails is found to be proportional to the energy of the excitation LH waves.
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页数：8
相关论文
共 13 条
  • [1] Fried B. D., 1961, PLASMA DISPERSION FU
  • [2] Tokamak edge electron diffusion and distribution function in the lower hybrid antenna electric field
    Fuchs, V
    Gunn, JP
    Goniche, M
    Petrzílka, V
    [J]. NUCLEAR FUSION, 2003, 43 (05) : 341 - 351
  • [3] Lower hybrid current drive experiments on Tore Supra in the ergodic divertor configuration
    Goniche, M
    Grosman, A
    Aniel, T
    De Michelis, C
    Gunn, J
    Mazon, D
    Schunke, B
    Ségui, JL
    Vallet, JC
    [J]. PLASMA PHYSICS AND CONTROLLED FUSION, 2004, 46 (05) : 899 - 923
  • [4] Enhanced heat flux in the scrape-off layer due to electrons accelerated in the near field of lower hybrid grills
    Goniche, M
    Guilhem, D
    Bibet, P
    Froissard, P
    Litaudon, X
    Rey, G
    [J]. NUCLEAR FUSION, 1998, 38 (06) : 919 - 937
  • [5] Measurement of lower hybrid hot spots using a retarding field analyzer in Tore Supra
    Gunn, J. P.
    Petrzilka, V.
    Ekedahl, A.
    Fuchs, V.
    Gauthier, E.
    Goniche, M.
    Kocan, M.
    Pascal, J. -Y.
    Saint-Laurent, F.
    [J]. JOURNAL OF NUCLEAR MATERIALS, 2009, 390-91 : 904 - 906
  • [6] Heat loads on JET plasma facing components from ICRF and LH wave absorption in the SOL
    Jacquet, P.
    Colas, L.
    Mayoral, M. -L.
    Arnoux, G.
    Bobkov, V.
    Brix, M.
    Coad, P.
    Czarnecka, A.
    Dodt, D.
    Durodie, F.
    Ekedahl, A.
    Frigione, D.
    Fursdon, M.
    Gauthier, E.
    Goniche, M.
    Graham, M.
    Joffrin, E.
    Korotkov, A.
    Lerche, E.
    Mailloux, J.
    Monakhov, I.
    Noble, C.
    Ongena, J.
    Petrzilka, V.
    Portafaix, C.
    Rimini, F.
    Sirinelli, A.
    Riccardo, V.
    Vizvary, Z.
    Widdowson, A.
    Zastrow, K. -D.
    [J]. NUCLEAR FUSION, 2011, 51 (10)
  • [7] Landau L.D., 1946, J. Phys. USSR, V10, P25, DOI DOI 10.1016/B978-0-08-010586-4.50066-3
  • [8] Lapenta G., 2009, PARTICLE CELL METHOD
  • [9] Fast electron flux driven by lower hybrid wave in the scrape-off layer
    Li, Y. L.
    Xu, G. S.
    Wang, H. Q.
    Xiao, C.
    Wan, B. N.
    Gao, Z.
    Chen, R.
    Wang, L.
    Gan, K. F.
    Yang, J. H.
    Zhang, X. J.
    Liu, S. C.
    Li, M. H.
    Ding, S.
    Yan, N.
    Zhang, W.
    Hu, G. H.
    Liu, Y. L.
    Shao, L. M.
    Li, J.
    Chen, L.
    Zhao, N.
    Xu, J. C.
    Yang, Q. Q.
    Lan, H.
    Ye, Y.
    [J]. PHYSICS OF PLASMAS, 2015, 22 (02)
  • [10] Strong toroidal asymmetries in power deposition on divertor and first wall components during LHCD on TdeV and Tore Supra
    Mailloux, J
    Demers, Y
    Fuchs, V
    Goniche, M
    Jacquet, P
    Boucher, C
    Cote, A
    Cote, C
    Gunn, J
    Terreault, B
    Bibet, P
    Froissard, P
    Guilhem, D
    Harris, JH
    Rey, G
    Tareb, M
    [J]. JOURNAL OF NUCLEAR MATERIALS, 1997, 241 : 745 - 749
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