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
  • [1] Global and pedestal confinement in JET with a Be/W metallic wall
    Beurskens, M. N. A.
    Frassinetti, L.
    Challis, C.
    Giroud, C.
    Saarelma, S.
    Alper, B.
    Angioni, C.
    Bilkova, P.
    Bourdelle, C.
    Brezinsek, S.
    Buratti, P.
    Calabro, G.
    Eich, T.
    Flanagan, J.
    Giovannozzi, E.
    Groth, M.
    Hobirk, J.
    Joffrin, E.
    Leyland, M. J.
    Lomas, P.
    de la Luna, E.
    Kempenaars, M.
    Maddison, G.
    Maggi, C.
    Mantica, P.
    Maslov, M.
    Matthews, G.
    Mayoral, M-L
    Neu, R.
    Nunes, I.
    Osborne, T.
    Rimini, F.
    Scannell, R.
    Solano, E. R.
    Snyder, P. B.
    Voitsekhovitch, I.
    de Vries, Peter
    NUCLEAR FUSION, 2014, 54 (04)
  • [2] An edge pedestal investigation for high-confinement tokamak plasmas
    Stacey, WM
    PHYSICS OF PLASMAS, 2002, 9 (04) : 1332 - 1341
  • [3] Predictive modelling of L and H confinement modes and edge pedestal characteristics
    Kalupin, D
    Tokar, MZ
    Unterberg, B
    Loozen, X
    Pilipenko, D
    NUCLEAR FUSION, 2005, 45 (06) : 468 - 476
  • [4] Pedestal confinement and stability in JET-ILW ELMy H-modes
    Maggi, C. F.
    Saarelma, S.
    Casson, F. J.
    Challis, C.
    de la Luna, E.
    Frassinetti, L.
    Giroud, C.
    Joffrin, E.
    Simpson, J.
    Beurskens, M.
    Chapman, I.
    Hobirk, J.
    Leyland, M.
    Lomas, P.
    Lowry, C.
    Nunes, I.
    Rimini, F.
    Sips, A. C. C.
    Urano, H.
    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.
    NUCLEAR FUSION, 2015, 55 (11)
  • [5] Integrated modelling of H-mode pedestal and confinement in JET-ILW
    Saarelma, S.
    Challis, C. D.
    Garzotti, L.
    Frassinetti, L.
    Maggi, C. F.
    Romanelli, M.
    Stokes, 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.
    Ariola, M.
    Arnichand, H.
    Arshad, S.
    Ash, A.
    Ashikawa, N.
    Aslanyan, V.
    Asunta, O.
    Auriemma, F.
    Austin, Y.
    Avotina, L.
    Axton, M. D.
    Ayres, C.
    PLASMA PHYSICS AND CONTROLLED FUSION, 2018, 60 (01)
  • [6] Confinement and edge studies towards low ρ* and ν* at JET
    Nunes, I.
    Lomas, P. J.
    McDonald, D. C.
    Saibene, G.
    Sartori, R.
    Voitsekhovitch, I.
    Beurskens, M.
    Arnoux, G.
    Boboc, A.
    Eich, T.
    Giroud, C.
    Heureux, S.
    de la Luna, E.
    Maddison, G.
    Sips, A. C. C.
    Thomsen, H.
    Versloot, T. W.
    NUCLEAR FUSION, 2013, 53 (07)
  • [7] Dimensionless scalings of confinement, heat transport and pedestal stability in JET-ILW and comparison with JET-C
    Frassinetti, L.
    Saarelma, S.
    Lomas, P.
    Nunes, I.
    Rimini, F.
    Beurskens, M. N. A.
    Bilkova, P.
    Boom, J. E.
    de la Luna, E.
    Delabie, E.
    Drewelow, P.
    Flanagan, J.
    Garzotti, L.
    Giroud, C.
    Hawks, N.
    Joffrin, E.
    Kempenaars, M.
    Kim, Hyun-Tae
    Kruezi, U.
    Loarte, A.
    Lomanowski, B.
    Lupelli, I.
    Meneses, L.
    Maggi, C. F.
    Menmuir, S.
    Peterka, M.
    Rachlew, E.
    Romanelli, M.
    Stefanikova, E.
    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.
    PLASMA PHYSICS AND CONTROLLED FUSION, 2017, 59 (01)
  • [8] Edge localized modes and edge pedestal in NBI and ICRF heated H, D and T plasmas in JET
    Bhatnagar, VP
    Lingertat, J
    Barnsley, R
    Breger, P
    Christiansen, JP
    Clement, S
    Cordey, JG
    Davies, SJ
    Ehrenberg, JK
    Eriksson, LG
    Fishpool, GM
    Harbour, PJ
    Horton, LD
    Jacquinot, J
    Jäckel, HJ
    Lawson, K
    Lowry, CG
    Maggi, CF
    Matthews, GF
    Monk, RD
    O'Brien, DP
    Parail, VV
    Righi, E
    Saibene, G
    Sartori, R
    Schunke, B
    Sips, ACC
    Stamp, MF
    Start, DFH
    Thomsen, K
    NUCLEAR FUSION, 1999, 39 (03) : 353 - 367
  • [9] The H-mode pedestal structure and its role on confinement in JET with a carbon and metal wall
    Leyland, M. J.
    Beurskens, M. N. A.
    Frassinetti, L.
    Giroud, C.
    Saarelma, S.
    Snyder, P. B.
    Flanagan, J.
    Jachmich, S.
    Kempenaars, M.
    Lomas, P.
    Maddison, G.
    Neu, R.
    Nunes, I.
    Gibson, K. J.
    NUCLEAR FUSION, 2015, 55 (01)
  • [10] An edge pedestal model
    Stacey, WM
    CONTRIBUTIONS TO PLASMA PHYSICS, 2002, 42 (2-4) : 283 - 289
12345