Recent progress on JET towards the ITER reference mode of operation at high density

被引：0

作者：

Ongena, J. ^{[1
]}

Suttrop, W. ^{[2
]}

Bécoulet, M. ^{[3
]}

Cordey, G. ^{[4
]}

Dumortier, P. ^{[1
]}

Eich, Th. ^{[5
]}

Ingesson, L.C. ^{[6
]}

Jachmich, S. ^{[1
]}

Lang, P. ^{[5
]}

Loarte, A. ^{[7
]}

Lomas, P. ^{[4
]}

Maddison, G.P. ^{[4
]}

Messiaen, A. ^{[1
]}

Nave, M.F.F. ^{[8
]}

Rapp, J. ^{[5
]}

Saibene, G. ^{[7
]}

Sartori, R. ^{[7
]}

Sauter, O. ^{[9
]}

Strachan, J.D. ^{[10
]}

Unterberg, B. ^{[5
]}

Valovic, M. ^{[4
]}

Alper, B. ^{[4
]}

Andrew, Ph. ^{[4
]}

Baranov, Y. ^{[4
]}

Brzozowski, J. ^{[10
]}

Bucalossi, J. ^{[3
]}

Brix, M. ^{[5
]}

Budny, R. ^{[11
]}

Charlet, M. ^{[4
]}

Coffey, I. ^{[4
]}

De Baar, M. ^{[6
]}

De Vries, P. ^{[6
]}

Gowers, C. ^{[4
]}

Hawkes, N. ^{[4
]}

Von Hellermann, M. ^{[6
]}

Hillis, D.L. ^{[12
]}

Hogan, J. ^{[12
]}

Jackson, G.L. ^{[13
]}

Joffrin, E. ^{[3
]}

Jupen, C. ^{[10
]}

Kallenbach, A. ^{[2
]}

Koslowski, H.R. ^{[5
]}

Lawson, K.D. ^{[4
]}

Mantsinen, M. ^{[4
]}

Matthews, G. ^{[4
]}

Monier-Garbet, P. ^{[3
]}

McDonald, D. ^{[4
]}

Milani, F. ^{[4
]}

Murakami, M. ^{[12
,13
]}

Murari, A. ^{[14
]}

机构：

[1] LPP/ERM-KMS, Association EURATOM-Belgian State, B-1000 Brussels, Belgium

[2] Max-Planck Institut für Plasmaphysik, EURATOM Association, D-85748 Garching, Germany

[3] CEA Cadarache, F-13108 St. Paul lez Durance, France

[4] EURATOM/UKAEA Fusion Association, Culham, United Kingdom

[5] Institut für Plasmaphysik, Forschungszentrum Jülich GmbH, EURATOM Association, D-52425 Jülich, Germany

[6] FOM-Instituut voor Plasmafysica, EURATOM Association, Postbus 1207, NL-3430 BE Nieuwegein, Netherlands

[7] EFDA-Close Support Unit, D-85748 Garching, Germany

[8] Centro de Fusão Nuclear, Association 'EURATOM-IST', 1096 Lisbon, Portugal

[9] Centre de Recherches en Physique des Plasmas, Ecole Polytechnique de Lausanne, Association 'EURATOM-Confederation Suisse', Lausanne, Switzerland

[10] Chalmers University of Technology, Association 'EURATOM-NFR', Göteborg, Sweden

[11] Princeton Plasma Physics Laboratory, Princeton University, Princeton, NJ 08543, United States

[12] Oak Ridge National Laboratory, Oak Ridge, TN 37831, United States

[13] DIII-D National Fusion Facility, San Diego, CA 92186-5698, United States

[14] Associazione EURATOM-ENEA sulla Fusione, Centro Ricerche Frascati, C.P. 65, 00044-Frascati, Rome, Italy

[15] Consorzio RFX - Associazione Euratom-Enea sulla Fusione, Corso Stati Uniti 4, I-35127 Padova, Italy

[16] Université Libre de Bruxelles, Association 'EURATOM-Belgian State', Physique Théorique et Mathématique, Unité de Physique des Plasmas, 1050 Brussels, Belgium

来源：

Plasma Physics and Controlled Fusion | 2001年 / 43卷 / 12 A期

关键词：

Gases - Impurities - Magnetohydrodynamics - Optimization - Plasma confinement - Plasma density - Plasma stability;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Recent progress towards obtaining high density and high confinement in JET as required for the ITER reference scenario at Q = 10 is summarized. Plasmas with simultaneous confinement H98(y,2) = 1 and densities up to n/nGW ∼ 1 are now routinely obtained. This has been possible (i) by using plasmas at high (δ ∼ 0.5) and medium (δ ∼ 0.3-0.4) triangularity with sufficient heating power to maintain Type I ELMs, (ii) with impurity seeded plasmas at high (δ ∼ 0.5) and low (δ &le 0.2) triangularity, (iii) with an optimized pellet injection sequence, maintaining the energy confinement and raising the density, and (iv) by carefully tuning the gas puff rate leading to plasmas with peaked density profiles and good confinement at long time scales. These high performance discharges exhibit Type I ELMs, with a new and more favourable behaviour observed at high densities, requiring further studies. Techniques for a possible mitigation of these ELMs are discussed, and first promising results are obtained with impurity seeding in discharges at high triangularity. Scaling studies using the new data of this year show a strong dependence of confinement on upper triangularity, density and proximity to the Greenwald limit. Observed MHD instabilities and methods to avoid these in high density and high confinement plasmas are discussed.

引用

共 50 条

[1] Recent progress on JET towards the ITER reference mode of operation at high density
Ongena, J
Suttrop, W
Bécoulet, M
Cordey, G
Dumortier, P
Eich, T
Ingesson, LC
Jachmich, S
Lang, P
Loarte, A
Lomas, P
Maddison, GP
Messiaen, A
Nave, MFF
Rapp, J
Saibene, G
Sartori, R
Sauter, O
Strachan, JD
Unterberg, B
Valovic, M
Alper, B
Andrew, P
Baranov, Y
Brzozowski, J
Bucalossi, J
Brix, M
Budny, R
Charlet, M
Coffey, I
De Baar, M
De Vries, P
Gowers, C
Hawkes, N
von Hellermann, M
Hillis, DL
Hogan, J
Jackson, GL
Joffrin, E
Jupen, C
Kallenbach, A
Koslowski, HR
Lawson, KD
Mantsinen, M
Matthews, G
Monier-Garbet, P
McDonald, D
Milani, F
Murakami, M
Murari, A
PLASMA PHYSICS AND CONTROLLED FUSION, 2001, 43 : A11 - A30
[2] JET progress towards an advanced mode of ITER operation with current profile control
Becoulet, A
PLASMA PHYSICS AND CONTROLLED FUSION, 2001, 43 : A395 - A406
[3] Overview of recent JET results in preparation for ITER operation: Interplay between technical and scientific progress
Pamela, J
Ongena, J
Borba, D
Buttery, R
Counsell, G
Felton, R
Joffrin, E
Lomas, P
Murari, A
Noterdaeme, JM
Piazza, G
Riccardo, V
Pitts, R
Rosanvallon, S
Stork, D
Zastrow, KD
FUSION ENGINEERING AND DESIGN, 2005, 74 (1-4) : 17 - 30
[4] Progress towards an integrated solution for the ITER baseline scenario based on high current and highly shaped plasma operation at JET
Buttery, R. J.
Loarte, A.
Lomas, P. J.
Mantica, P.
McDonald, D. C.
Saarelma, S.
Sartori, R.
Saibene, G.
PLASMA PHYSICS AND CONTROLLED FUSION, 2007, 49 (5A) : A59 - A72
[5] JET PROGRESS TOWARDS D-T OPERATION
HUGUET, M
BERTOLINI, E
FUSION TECHNOLOGY, 1989, 15 (02): : 245 - 258
[6] Towards the realization on JET of an integrated H-mode scenario for ITER
Ongena, J
Monier-Garbet, P
Suttrop, W
Andrew, P
Bécoulet, M
Budny, R
Corre, Y
Cordey, G
Dumortier, P
Eich, T
Garzotti, L
Hillis, DL
Hogan, J
Ingesson, LC
Jachmich, S
Joffrin, E
Lang, P
Loarte, A
Lomas, P
Maddison, GP
McDonald, D
Messiaen, A
Nave, MFF
Saibene, G
Sartori, R
Sauter, O
Strachan, JD
Unterberg, B
Valovic, M
Voitsekhovitch, I
von Hellermann, M
Alper, B
Baranov, Y
Beurskens, M
Bonheure, G
Brzozowski, J
Bucalossi, J
Brix, M
Charlet, M
Coffey, I
De Baar, M
De Vries, P
Giroud, C
Gowers, C
Hawkes, N
Jackson, GL
Jupen, C
Kallenbach, A
Koslowski, HR
Lawson, KD
NUCLEAR FUSION, 2004, 44 (01) : 124 - 133
[7] High-density divertor operation in JET
Horton, LD
PLASMA PHYSICS AND CONTROLLED FUSION, 1996, 38 (12A) : A269 - A280
[8] High density operation at JET by pellet refuelling
Lang, PT
Alper, B
Baylor, LR
Beurskens, M
Cordey, JG
Dux, R
Felton, R
Garzotti, L
Haas, G
Horton, LD
Jachmich, S
Jones, TTC
Lorenz, A
Lomas, PJ
Maraschek, M
Müller, HW
Ongena, J
Rapp, J
Renk, KF
Reich, M
Sartori, R
Schmidt, G
Stamp, M
Suttrop, W
Villedieu, E
Wilson, D
PLASMA PHYSICS AND CONTROLLED FUSION, 2002, 44 (09) : 1919 - 1928
[9] Progress of the reference design for ITER bolometers and development of a high performance alternative
Reichle, R
Di Maio, M
Ingesson, LC
DIAGNOSTICS FOR EXPERIMENTAL THERMONUCLEAR FUSION REACTORS 2, 1998, : 389 - 398
[10] Recent H-mode density limit studies at JET
Borrass, K
Loarte, A
Maggi, CF
Mertens, V
Monier, P
Monk, R
Ongena, J
Rapp, J
Saibene, G
Sartori, R
Schweinzer, I
Stober, J
Suttrop, W
NUCLEAR FUSION, 2004, 44 (07) : 752 - 760

← 1 2 3 4 5 →