Noninductive plasma initiation and startup in the DIII-D tokamak

被引：30

作者：

Jackson, G. L. ^{[1
]}

Humphreys, D. A. ^{[1
]}

Hyatt, A. W. ^{[1
]}

Lohr, J. M. ^{[1
]}

Luce, T. C. ^{[1
]}

Yu, J. H. ^{[2
]}

机构：

[1] Gen Atom Co, San Diego, CA 92186 USA

[2] Univ Calif San Diego, San Diego, CA 92093 USA

来源：

NUCLEAR FUSION | 2011年 / 51卷 / 08期

关键词：

ELECTRON-CYCLOTRON WAVES; LOWER HYBRID WAVES; CURRENT DRIVE; CURRENTS;

D O I：

10.1088/0029-5515/51/8/083015

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：

Noninductive plasma startup with second harmonic electron cyclotron heating has been studied in DIII-D. Plasma currents up to 33 kA have been obtained in this phase. The maximum current obtained was primarily limited by the experimental time and does not necessarily represent the highest achievable current. The dominant physical mechanism for the observed current is the Pfirsch-Schluter current on open field lines. Closed flux surfaces have been observed, but in a rather limited region, compared with previous experiments in spherical tokamaks. This method of plasma initiation and initial current ramp might be used in future burning plasma devices in conjunction with other current drive techniques to provide a fully noninductive startup.

引用

页数：9

共 21 条

[1] Electron temperature measurements from optically gray third harmonic electron cyclotron emission in the DIII-D tokamak [J].

Austin, ME ;

Ellis, RF ;

James, RA ;

Luce, TC .

PHYSICS OF PLASMAS, 1996, 3 (10) :3725-3731

[2] ECH pre-ionization and assisted startup in the fully superconducting KSTAR tokamak using second harmonic [J].

Bae, Y. S. ;

Jeong, J. H. ;

Park, S. I. ;

Joung, M. ;

Kim, J. H. ;

Hahn, S. H. ;

Yoon, S. W. ;

Yang, H. L. ;

Kim, W. C. ;

Oh, Y. K. ;

England, A. C. ;

Namkung, W. ;

Cho, M. H. ;

Jackson, G. L. ;

Bak, J. S. .

NUCLEAR FUSION, 2009, 49 (02)

[3]

Chan V.S., 2011, NUCL FUSION UNPUB

[4] RF start-up and sustainment experiments on the TST-2@K spherical tokamak [J].

Ejiri, A. ;

Takase, Y. ;

Kasahara, H. ;

Yamada, T. ;

Hanada, K. ;

Sato, K. N. ;

Zushi, H. ;

Nakamura, K. ;

Sakamoto, M. ;

Idei, H. ;

Hasegawa, M. ;

Iyomasa, A. ;

Imamura, N. ;

Esaki, K. ;

Kitaguchi, M. ;

Sasaki, K. ;

Hoshika, H. ;

Mitarai, O. ;

Nishino, N. .

NUCLEAR FUSION, 2006, 46 (07) :709-713

[5] INVESTIGATION OF THE FORMATION OF A FULLY PRESSURE-DRIVEN TOKAMAK [J].

FOREST, CB ;

HWANG, YS ;

ONO, M ;

GREENE, G ;

JONES, T ;

CHOE, W ;

SCHAFFER, M ;

HYATT, A ;

OSBORNE, T ;

PINSKER, RI ;

PETTY, CC ;

LOHR, J ;

LIPPMANN, S .

PHYSICS OF PLASMAS, 1994, 1 (05) :1568-1576

[6] INTERNALLY GENERATED CURRENTS IN A SMALL-ASPECT-RATIO TOKAMAK GEOMETRY [J].

FOREST, CB ;

HWANG, YS ;

ONO, M ;

DARROW, DS .

PHYSICAL REVIEW LETTERS, 1992, 68 (24) :3559-3562

[7] Analytic modeling of axisymmetric disruption halo currents [J].

Humphreys, DA ;

Kellman, AG .

PHYSICS OF PLASMAS, 1999, 6 (07) :2742-2756

[8] Understanding and predicting the dynamics of tokamak discharges during startup and rampdown [J].

Jackson, G. L. ;

Politzer, P. A. ;

Humphreys, D. A. ;

Casper, T. A. ;

Hyatt, A. W. ;

Leuer, J. A. ;

Lohr, J. ;

Luce, T. C. ;

Van Zeeland, M. A. ;

Yu, J. H. .

PHYSICS OF PLASMAS, 2010, 17 (05)

[9] FORMATION OF A 100-KA TOKAMAK DISCHARGE IN THE PRINCETON LARGE TORUS BY LOWER HYBRID WAVES [J].

JOBES, F ;

STEVENS, J ;

BELL, R ;

BERNABEI, S ;

CAVALLO, A ;

CHU, TK ;

COHEN, S ;

DENNE, B ;

EFTHIMION, P ;

HINNOV, E ;

HOOKE, W ;

HOSEA, J ;

MAZZUCATO, E ;

MCWILLIAMS, R ;

MOTLEY, R ;

SUCKEWER, S ;

TAYLOR, G ;

TIMBERLAKE, J ;

VONGOELER, S ;

WILSON, R .

PHYSICAL REVIEW LETTERS, 1984, 52 (12) :1005-1008

[10]

Leuer J.A., 2011, NUCL FUSION UNPUB

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