Integration of a radiative divertor for heat load control into JET high triangularity ELMy H-mode plasmas

被引：62

作者：

Giroud, C. ^{[1
]}

Maddison, G. ^{[1
]}

McCormick, K. ^{[2
]}

Beurskens, M. N. A. ^{[1
]}

Brezinsek, S. ^{[3
]}

Devaux, S. ^{[2
]}

Eich, T. ^{[2
]}

Frassinetti, L. ^{[4
]}

Fundamenski, W. ^{[1
]}

Groth, M. ^{[5
]}

Huber, A. ^{[3
]}

Jachmich, S. ^{[6
]}

Jarvinen, A. ^{[5
]}

Kallenbach, A. ^{[2
]}

Krieger, K. ^{[2
]}

Moulton, D. ^{[1
,7
]}

Saarelma, S. ^{[1
]}

Thomsen, H. ^{[8
]}

Wiesen, S. ^{[3
]}

Alonso, A.

Alper, B. ^{[1
]}

Arnoux, G. ^{[1
]}

Belo, P. ^{[9
]}

Boboc, A. ^{[1
]}

Brett, A. ^{[1
]}

Brix, M. ^{[1
]}

Coffey, I. ^{[10
]}

de la Luna, E.

Dodt, D. ^{[2
]}

De Vries, P. ^{[11
]}

Felton, R. ^{[1
]}

Giovanozzi, E. ^{[12
]}

Harling, J. ^{[1
]}

Harting, D. ^{[3
]}

Hawkes, N. ^{[1
]}

Hobirk, J. ^{[2
]}

Jenkins, I. ^{[1
]}

Joffrin, E. ^{[13
]}

Kempenaars, M. ^{[1
]}

Lehnen, M. ^{[3
]}

Loarer, T. ^{[13
]}

Lomas, P. ^{[1
]}

Mailloux, J. ^{[1
]}

McDonald, D. ^{[1
]}

Meigs, A. ^{[1
]}

Morgan, P. ^{[1
]}

Nunes, I. ^{[9
]}

van Thun, C. Perez ^{[2
]}

Riccardo, V. ^{[1
]}

Rimini, F. ^{[1
]}

机构：

[1] EURATOM CCFE Fus Assoc, Culham Sci Ctr, Abingdon OX14 3DB, Oxon, England

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

[3] Assoc EURATOM FZJ, Forschungszentrum Julich, IEF Plasmaphys, Julich, Germany

[4] KTH, SCI, Dept Phys, Assoc EURATOM VR, SE-10691 Stockholm, Sweden

[5] Aalto Univ, Assoc EURATOM Tekes, Espoo 02015, Finland

[6] ERM KMS, Assoc Euratom Etat Belge, Brussels, Belgium

[7] Univ London Imperial Coll Sci Technol & Med, London, England

[8] EURATOM Assoziat, Max Planck Inst Plasmaphys, D-17491 Greifswald, Germany

[9] EURATOM IST Assoc, IPFN, P-1096 Lisbon, Portugal

[10] Queens Univ Belfast, Astrophys Res Ctr, Belfast BT7 1NN, Antrim, North Ireland

[11] EURATOM, NL-3430 BE Nieuwegein, Netherlands

[12] Assoc Euratom ENEA Fus, I-00044 Frascati, Rome, Italy

[13] Assoc Euratom CEA, CEA Cadarache, F-13108 St Paul Les Durance, France

来源：

NUCLEAR FUSION | 2012年 / 52卷 / 06期

关键词：

EDGE LOCALIZED MODES; HIGH-DENSITY; MAGNETOHYDRODYNAMIC STABILITY; PERFORMANCE; TRANSPORT; INSTABILITIES; DISCHARGES; ENERGY;

D O I：

10.1088/0029-5515/52/6/063022

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：

Experiments on JET with a carbon-fibre composite wall have explored the reduction of steady-state power load in an ELMy H-mode scenario at high Greenwald fraction similar to 0.8, constant power and close to the L to H transition. This paper reports a systematic study of power load reduction due to the effect of fuelling in combination with seeding over a wide range of pedestal density ((4-8) x 10(19) m(-3)) with detailed documentation of divertor, pedestal and main plasma conditions, as well as a comparative study of two extrinsic impurity nitrogen and neon. It also reports the impact of steady-state power load reduction on the overall plasma behaviour, as well as possible control parameters to increase fuel purity. Conditions from attached to fully detached divertor were obtained during this study. These experiments provide reference plasmas for comparison with a future JET Be first wall and an all W divertor where the power load reduction is mandatory for operation.

引用

页数：22

共 63 条

[1]

Arshad S., 2005, EPS 32 PLASM PHYS C

[2] Investigations of impurity seeding and radiation control for long-pulse and high-density H-mode plasmas in JT-60U [J].

Asakura, N. ;

Nakano, T. ;

Oyama, N. ;

Sakamoto, T. ;

Matsunaga, G. ;

Itami, K. .

NUCLEAR FUSION, 2009, 49 (11)

[3] RECYCLING ENHANCEMENT WITH (N)OVER-BAR(E) AND Q(EFF) IN HIGH-DENSITY DISCHARGES ON JT-60U [J].

ASAKURA, N ;

SHIMIZU, K ;

HOSOGANE, N ;

ITAMI, K ;

TSUJI, S ;

SHIMADA, M .

NUCLEAR FUSION, 1995, 35 (04) :381-398

[4] H-mode pedestal scaling in DIII-D, ASDEX Upgrade, and JET [J].

Beurskens, M. N. A. ;

Osborne, T. H. ;

Schneider, P. A. ;

Wolfrum, E. ;

Frassinetti, L. ;

Groebner, R. ;

Lomas, P. ;

Nunes, I. ;

Saarelma, S. ;

Scannell, R. ;

Snyder, P. B. ;

Zarzoso, D. ;

Balboa, I. ;

Bray, B. ;

Brix, M. ;

Flanagan, J. ;

Giroud, C. ;

Giovannozzi, E. ;

Kempenaars, M. ;

Loarte, A. ;

de la Luna, E. ;

Maddison, G. ;

Maggi, C. F. ;

McDonald, D. ;

Pasqualotto, R. ;

Saibene, G. ;

Sartori, R. ;

Solano, E. ;

Walsh, M. ;

Zabeo, L. .

PHYSICS OF PLASMAS, 2011, 18 (05)

[5] Pedestal and scrape-off layer dynamics in ELMy H-mode plasmas in JET [J].

Beurskens, M. N. A. ;

Alfier, A. ;

Alper, B. ;

Balboa, I. ;

Flanagan, J. ;

Fundamenski, W. ;

Giovannozzi, E. ;

Kempenaars, M. ;

Loarte, A. ;

Lomas, P. ;

de la Luna, E. ;

Nunes, I. ;

Pasqualotto, R. ;

Pitts, R. A. ;

Saibene, G. ;

Walsh, M. ;

Wiesen, S. .

NUCLEAR FUSION, 2009, 49 (12)

[6] Pedestal and ELM response to impurity seeding in JET advanced scenario plasmas [J].

Beurskens, M. N. A. ;

Arnoux, G. ;

Brezinsek, A. S. ;

Challis, C. D. ;

de Vries, P. C. ;

Giroud, C. ;

Huber, A. ;

Jachmich, S. ;

McCormick, K. ;

Pitts, R. A. ;

Rimini, F. G. ;

Alfier, A. ;

de la Luna, E. ;

Fundamenski, W. ;

Gerasimov, S. ;

Giovannozzi, E. ;

Joffrin, E. ;

Kempenaars, M. ;

Litaudon, X. ;

Loarer, T. ;

Lomas, P. ;

Mailloux, J. ;

Pasqualotto, R. ;

Pericoli-Ridolfini, V. ;

Pugno, R. ;

Rachlew, E. ;

Saarelma, S. ;

Solano, E. ;

Walsh, M. ;

Zabeo, L. ;

Zastrow, K. -D. .

NUCLEAR FUSION, 2008, 48 (09)

[7] The impact of divertor detachment on carbon sources in JET L-mode discharges [J].

Brezinsek, S. ;

Meigs, A. G. ;

Jachmich, S. ;

Stamp, M. F. ;

Rapp, J. ;

Felton, R. ;

Pitts, R. A. ;

Philipps, V. ;

Huber, A. ;

Pugno, R. ;

Sergienko, G. ;

Pospieszczyk, A. .

JOURNAL OF NUCLEAR MATERIALS, 2009, 390-91 :267-273

[8]

Brezinsek S., 2011, NUCL FUSION, V51

[9] Magnetohydrodynamic stability of tokamak edge plasmas [J].

Connor, JW ;

Hastie, RJ ;

Wilson, HR ;

Miller, RL .

PHYSICS OF PLASMAS, 1998, 5 (07) :2687-2700

[10] Hybrid H-mode scenario with nitrogen seeding and type III ELMs in JET [J].

Corre, Y. ;

Joffrin, E. ;

Monier-Garbet, P. ;

Andrew, Y. ;

Arnoux, G. ;

Beurskens, M. ;

Brezinsek, S. ;

Brix, M. ;

Buttery, R. ;

Coffey, I. ;

Crombe, K. ;

de La Luna, E. ;

Felton, R. ;

Giroud, C. ;

Hacquin, S. ;

Hobirk, J. ;

Huber, A. ;

Imbeaux, F. ;

Jachmich, S. ;

Kempenaars, M. ;

Litaudon, X. ;

Leggate, H. ;

Loarer, T. ;

Maddison, G. ;

Rachlew, E. ;

Rapp, J. ;

Sauter, O. ;

Savchkov, A. ;

Telesca, G. ;

Widdowson, A. ;

Zastrow, K. D. ;

Zimmermann, O. .

PLASMA PHYSICS AND CONTROLLED FUSION, 2008, 50 (11)

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