First Observation of a Stable Highly Dissipative Divertor Plasma Regime on the Wendelstein 7-X Stellarator

被引：39

作者：

Zhang, D. ^{[1
]}

Koenig, R. ^{[1
]}

Feng, Y. ^{[1
]}

Burhenn, R. ^{[1
]}

Brezinsek, S. ^{[2
]}

Jakubowski, M. ^{[1
]}

Buttenschoen, B. ^{[1
]}

Niemann, H. ^{[1
]}

Pavone, A. ^{[1
]}

Krychowiak, M. ^{[1
]}

Kwak, S. ^{[1
]}

Svensson, J. ^{[1
]}

Gao, Y. ^{[2
]}

Pedersen, T. S. ^{[1
]}

Alonso, A. ^{[3
]}

Baldzuhn, J. ^{[1
]}

Beidler, C. D. ^{[1
]}

Biedermann, C. ^{[1
]}

Bozhenkov, S. ^{[1
]}

Brunner, K. J. ^{[1
]}

Damm, H. ^{[1
]}

Hirsch, M. ^{[1
]}

Giannone, L. ^{[4
]}

Drewelow, P. ^{[1
]}

Effenberg, F. ^{[5
]}

Fuchert, G. ^{[1
]}

Hammond, K. C. ^{[1
]}

Hfel, U. ^{[1
]}

Killer, C. ^{[1
]}

Knauer, J. ^{[1
]}

Laqua, H. P. ^{[1
]}

Laube, R. ^{[1
]}

Pablant, N. ^{[6
]}

Pasch, E. ^{[1
]}

Penzel, F. ^{[4
]}

Rahbarnia, K. ^{[1
]}

Reimold, F. ^{[1
]}

Thomsen, H. ^{[1
]}

Winters, V ^{[5
]}

Wagner, F. ^{[1
]}

Klinger, T. ^{[1
]}

机构：

[1] Max Planck Inst Plasma Phys, D-17491 Greifswald, Germany

[2] Forschungszentrum Julich, IEK 4, D-52425 Julich, Germany

[3] CIEMAT, Lab Nacl Fus, E-28040 Madrid, Spain

[4] Max Planck Inst Plasma Phys, D-85748 Garching, Germany

[5] Univ Wisconsin, Madison, WI 53706 USA

[6] Princeton Plasma Phys Lab, Princeton, NJ 08540 USA

来源：

PHYSICAL REVIEW LETTERS | 2019年 / 123卷 / 02期

关键词：

RADIATION; PHYSICS; DETACHMENT; OPERATION;

D O I：

10.1103/PhysRevLett.123.025002

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

For the first time, the optimized stellarator Wendelstein 7-X has operated with an island divertor. An operation regime in hydrogen was found in which the total plasma radiation approached the absorbed heating power without noticeable loss of stored energy. The divertor thermography recorded simultaneously a strong reduction of the heat load on all divertor targets, indicating almost complete power detachment. This operation regime was stably sustained over several energy confinement times until the preprogrammed end of the discharge. The plasma radiation is mainly due to oxygen and is located at the plasma edge. This plasma scenario is reproducible and robust at various heating powers, plasma densities, and gas fueling locations. These experimental results show that the island divertor concept actually works and displays good power dissipation potential, producing a promising exhaust concept for the stellarator reactor line.

引用

页数：5

共 35 条

[1] PHYSICS AND ENGINEERING DESIGN FOR WENDELSTEIN-VII-X [J].

BEIDLER, C ;

GRIEGER, G ;

HERRNEGGER, F ;

HARMEYER, E ;

KISSLINGER, J ;

LOTZ, W ;

MAASSBERG, H ;

MERKEL, P ;

NUHRENBERG, J ;

RAU, F ;

SAPPER, J ;

SARDEI, F ;

SCARDOVELLI, R ;

SCHLUTER, A ;

WOBIG, H .

FUSION TECHNOLOGY, 1990, 17 (01) :148-168

[2] Power exhaust by SOL and pedestal radiation at ASDEX Upgrade and JET [J].

Bernert, M. ;

Wischmeier, M. ;

Huber, A. ;

Reimold, F. ;

Lipschultz, B. ;

Lowry, C. ;

Brezinsek, S. ;

Dux, R. ;

Eich, T. ;

Kallenbach, A. ;

Lebschy, A. ;

Maggi, C. ;

McDermott, R. ;

Puetterich, T. ;

Wiesen, S. .

NUCLEAR MATERIALS AND ENERGY, 2017, 12 :111-118

[3] Technical challenges in the construction of the steady-state stellarator Wendelstein 7-X [J].

Bosch, H. -S. ;

Wolf, R. C. ;

Andreeva, T. ;

Baldzuhn, J. ;

Birus, D. ;

Bluhm, T. ;

Braeuer, T. ;

Braune, H. ;

Bykov, V. ;

Cardella, A. ;

Durodie, F. ;

Endler, M. ;

Erckmann, V. ;

Gantenbein, G. ;

Hartmann, D. ;

Hathiramani, D. ;

Heimann, P. ;

Heinemann, B. ;

Hennig, C. ;

Hirsch, M. ;

Holtum, D. ;

Jagielski, J. ;

Jelonnek, J. ;

Kasparek, W. ;

Klinger, T. ;

Koenig, R. ;

Kornejew, P. ;

Kroiss, H. ;

Krom, J. G. ;

Kuehner, G. ;

Laqua, H. ;

Laqua, H. P. ;

Lechte, C. ;

Lewerentz, M. ;

Maier, J. ;

McNeely, P. ;

Messiaen, A. ;

Michel, G. ;

Ongena, J. ;

Peacock, A. ;

Pedersen, T. S. ;

Riedl, R. ;

Riemann, H. ;

Rong, P. ;

Rust, N. ;

Schacht, J. ;

Schauer, F. ;

Schroeder, R. ;

Schweer, B. ;

Spring, A. .

NUCLEAR FUSION, 2013, 53 (12)

[4] Magnetic configuration effects on the Wendelstein 7-X stellarator [J].

Dinklage, A. ;

Beidler, C. D. ;

Helander, P. ;

Fuchert, G. ;

Maassberg, H. ;

Rahbarnia, K. ;

Pedersen, T. Sunn ;

Turkin, Y. ;

Wolf, R. C. ;

Alonso, A. ;

Andreeva, T. ;

Blackwell, B. ;

Bozhenkov, S. ;

Buttenschoen, B. ;

Czarnecka, A. ;

Effenberg, F. ;

Feng, Y. ;

Geiger, J. ;

Hirsch, M. ;

Hoefel, U. ;

Jakubowski, M. ;

Klinger, T. ;

Knauer, J. ;

Kocsis, G. ;

Kraemer-Flecken, A. ;

Kubkowska, M. ;

Langenberg, A. ;

Laqua, H. P. ;

Marushchenko, N. ;

Mollen, A. ;

Neuner, U. ;

Niemann, H. ;

Pasch, E. ;

Pablant, N. ;

Rudischhauser, L. ;

Smith, H. M. ;

Schmitz, O. ;

Stange, T. ;

Szepesi, T. ;

Weir, G. ;

Windisch, T. ;

Wurden, G. A. ;

Zhang, D. ;

Abramovic, I. ;

Akaeslompolo, S. ;

Ali, A. ;

Alonso, A. ;

Belloso, J. Alcuson ;

Aleynikov, P. ;

Aleynikova, K. .

NATURE PHYSICS, 2018, 14 (08) :855-+

[5] RESONANT HELICAL DIVERTOR EXPERIMENTS IN OHMIC AND AUXILIARY HEATED JIPP T-IIU PLASMAS [J].

EVANS, TE ;

DEGRASSIE, JS ;

GARNER, HR ;

LEONARD, AW ;

OHYABU, N ;

PERANICH, LS ;

MOHRI, A ;

HAMADA, Y ;

IDA, K ;

KANEKO, O ;

KAWAHATA, K ;

KITAGAWA, S ;

KURODA, T ;

MASAI, K ;

MORITA, S ;

OGAWA, Y ;

OKAMURA, S ;

SATO, KN ;

SAKAMOTO, M ;

YAMADA, H ;

YAMAZAKI, K ;

WATARI, T ;

KARGER, F .

JOURNAL OF NUCLEAR MATERIALS, 1989, 162 :636-642

[6] EXPERIMENTS TO TEST AN INTRA-ISLAND SCOOP LIMITER ON TEXT [J].

EVANS, TE ;

DEGRASSIE, JS ;

JACKSON, GL ;

OHYABU, N ;

WOOTTON, AJ ;

GENTLE, KW ;

HODGE, WL ;

MCCOOL, SC ;

PHILLIPS, PE ;

RHODES, TL ;

RICHARDS, B ;

RITZ, CP ;

ROWAN, WL ;

KARGER, F ;

HAAS, G .

JOURNAL OF NUCLEAR MATERIALS, 1987, 145 :812-818

[7] Physics of island divertors as highlighted by the example of W7-AS [J].

Feng, Y. ;

Sardei, F. ;

Grigull, P. ;

McCormick, K. ;

Kisslinger, J. ;

Reiter, D. .

NUCLEAR FUSION, 2006, 46 (08) :807-819

[8] On the W7-X divertor performance under detached conditions [J].

Feng, Y. ;

Beidler, C. D. ;

Geiger, J. ;

Helander, P. ;

Hoelbe, H. ;

Maassberg, H. ;

Turkin, Y. ;

Reiter, D. .

NUCLEAR FUSION, 2016, 56 (12)

[9]

Feng Y, 2004, CONTRIB PLASM PHYS, V44, P57, DOI [10.1002/ctpp.200410009, 10.1002/ctpp.20041009]

[10] Radiation power profiles and density limit with a divertor in the W7-AS stellarator [J].

Giannone, L ;

Burhenn, R ;

McCormick, K ;

Brakel, R ;

Feng, Y ;

Grigull, P ;

Igitkhanov, Y .

PLASMA PHYSICS AND CONTROLLED FUSION, 2002, 44 (10) :2149-2165

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