Loss of confinement due to reduction of the edge pedestal in JET

被引：40
|
作者：
Fishpool, GM [1 ]
机构：
[1] Jet Joint Undertaking, Abingdon OX14 3EA, Oxon, England
来源：
NUCLEAR FUSION | 1998年 / 38卷 / 09期
关键词：
D O I：
10.1088/0029-5515/38/9/311
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：
There are various conditions in JET under which the energy confinement of a plasma is reduced from H mode towards L mode levels. Examples are reported here for which the loss of confinement is associated with a reduction of the electron pressure pedestal. This loss is brought about by strong gas puffing that increases the frequency of edge localized modes (ELMs). The effect of ELMs on confinement is modelled, and used to explain the observed degradation of confinement. The model is generalized for application to other machines.
引用
收藏
页码：1373 / 1380
页数：8
相关论文
共 50 条
  • [41] Gyrokinetic Simulations of the Edge Pedestal in the TEXTOR Tokamak
    Kiviniemi, T.
    Leerink, S.
    Heikkinen, J. A.
    Janhunen, S.
    Korpilo, T.
    CONTRIBUTIONS TO PLASMA PHYSICS, 2012, 52 (5-6) : 406 - 411
  • [42] Multipactor Breakdown Threshold Reduction Due to Magnetic Confinement in Parallel Fields
    Hubble, Aimee A.
    Chaplin, Vernon H.
    Clements, Kathryn A.
    Spektor, Rostislav
    Partridge, Preston T.
    Graves, Timothy P.
    IEEE TRANSACTIONS ON PLASMA SCIENCE, 2017, 45 (07) : 1726 - 1730
  • [43] Impact of zonal flows on edge pedestal collapse
    Jhang, Hogun
    Kaang, Helen H.
    Kim, S. S.
    Rhee, T.
    Singh, R.
    Hahm, T. S.
    NUCLEAR FUSION, 2017, 57 (02)
  • [44] Role of the pedestal position on the pedestal performance in AUG, JET-ILW and TCV and implications for ITER
    Frassinetti, L.
    Dunne, M. G.
    Sheikh, U.
    Saarelma, S.
    Roach, C. M.
    Stefanikova, E.
    Maggi, C.
    Horvath, L.
    Pamela, S.
    de la Luna, E.
    Wolfrum, E.
    Bernert, M.
    Blanchard, P.
    Labit, B.
    Merle, A.
    Guimarais, L.
    Coda, S.
    Meyer, H.
    Hillesheim, J. C.
    Abduallev, S.
    Abhangi, M.
    Abreu, P.
    Afzal, M.
    Aggarwal, K. M.
    Ahlgren, T.
    Ahn, J. H.
    Aho-Mantila, L.
    Aiba, N.
    Airila, M.
    Albanese, R.
    Aldred, V.
    Alegre, D.
    Alessi, E.
    Aleynikov, P.
    Alfier, A.
    Alkseev, A.
    Allinson, M.
    Alper, B.
    Alves, E.
    Ambrosino, G.
    Ambrosino, R.
    Amicucci, L.
    Amosov, V.
    Sunden, E. Andersson
    Angelone, M.
    Anghel, M.
    Angioni, C.
    Appel, L.
    Appelbee, C.
    Arena, P.
    NUCLEAR FUSION, 2019, 59 (07)
  • [45] CONFINEMENT AND PEDESTAL CHARACTERISTICS IN H-MODE WITH ECH HEATING
    Prater, R.
    deGrassie, J. S.
    Gohil, P.
    Osborne, T. H.
    Doyle, E. J.
    Zeng, L.
    ELECTRON CYCLOTRON EMISSION AND ELECTRON CYCLOTRON RESONANCE HEATING (EC-16), 2011, : 143 - 148
  • [46] Optimal Confinement Loss Reduction in Photonic Crystal Fiber with Flattened Dispersion
    Pourmahayabadi, M.
    Nejad, S. Mohammad
    2008 INTERNATIONAL SYMPOSIUM ON HIGH CAPACITY OPTICAL NETWORKS AND ENABLING TECHNOLOGIES, 2008, : 251 - 256
  • [47] Edge operational space for high density/high confinement ELMY H-modes in JET
    Sartori, R
    Saibene, G
    Becoulet, M
    Lomas, PJ
    Loarte, A
    Campbell, DJ
    Andrew, Y
    Budny, R
    Beurskens, MNA
    Kallenbach, A
    Parail, V
    Suttrop, W
    Stober, J
    Zastrow, KD
    Zerbini, M
    Monk, RD
    PLASMA PHYSICS AND CONTROLLED FUSION, 2002, 44 (09) : 1801 - 1813
  • [48] Effect of PFC Recycling Conditions on JET Pedestal Density
    Wiesen, S.
    Brezinsek, S.
    Harting, D.
    Dittmar, T.
    de la Luna, E.
    Matveev, D.
    Schmid, K.
    Abhangi, M.
    Abreu, P.
    Aftanas, M.
    Afzal, M.
    Aggarwal, K. M.
    Aho-Mantila, L.
    Ahonen, E.
    Aints, M.
    Airila, M.
    Albanese, R.
    Alegre, D.
    Alessi, E.
    Aleynikov, P.
    Alfier, A.
    Alkseev, A.
    Allan, P.
    Almaviva, S.
    Alonso, A.
    Alper, B.
    Alsworth, I.
    Alves, D.
    Ambrosino, G.
    Ambrosino, R.
    Amosov, V.
    Andersson, F.
    Andersson Sunden, E.
    Angelone, M.
    Anghel, A.
    Anghel, M.
    Angioni, C.
    Appel, L.
    Apruzzese, G.
    Arena, P.
    Ariola, M.
    Arnichand, H.
    Arnoux, G.
    Arshad, S.
    Ash, A.
    Asp, E.
    Asunta, O.
    Atanasiu, C. V.
    Austin, Y.
    Avotina, L.
    CONTRIBUTIONS TO PLASMA PHYSICS, 2016, 56 (6-8) : 754 - 759
  • [49] Microtearing turbulence limiting the JET-ILW pedestal
    Hatch, D. R.
    Kotschenreuther, M.
    Mahajan, S.
    Valanju, P.
    Jenko, F.
    Told, D.
    Goerler, T.
    Saarelma, S.
    NUCLEAR FUSION, 2016, 56 (10)
  • [50] CONFINEMENT AND EDGE CURRENTS
    MURRAY, JG
    FUSION TECHNOLOGY, 1989, 15 (02): : 501 - 506
12345