Measurements of fast-ion acceleration at cyclotron harmonics using Balmer-alpha spectroscopy

被引：119

作者：

Heidbrink, W. W. ^{[1
]}

Luo, Y.

Burrell, K. H.

Harvey, R. W.

Pinsker, R. I.

Ruskov, E.

机构：

[1] Univ Calif Irvine, Irvine, CA 92623 USA

[2] Gen Atom Co, San Diego, CA USA

[3] CompX, Del Mar, CA USA

来源：

PLASMA PHYSICS AND CONTROLLED FUSION | 2007年 / 49卷 / 09期

关键词：

D O I：

10.1088/0741-3335/49/9/008

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：

Combined neutral beam injection and fast wave heating at the fourth and fifth cyclotron harmonics accelerate fast ions in the DIII-D tokamak. Measurements with a nine-channel fast-ion D-alpha (FIDA) diagnostic indicate the formation of a fast-ion tail above the injection energy. Tail formation correlates with enhancement of the d-d neutron rate above the value that is expected in the absence of fast-wave acceleration. FIDA spatial profiles and fast-ion pressure profiles inferred from the equilibrium both indicate that the acceleration is near the magnetic axis for a centrally located resonance layer. The enhancement is largest 8-10 cm beyond the radius where the wave frequency equals the cyclotron harmonic, probably due to a combination of Doppler-shift and orbital effects. The fast-ion distribution function calculated by the CQL3D Fokker-Planck code is fairly consistent with the data.

引用

收藏

页码：1457 / 1475

页数：19

相关论文

共 48 条

[1] Electron cyclotron emission radiometer upgrade on the DIII-D tokamak [J].

Austin, ME ;

Lohr, J .

REVIEW OF SCIENTIFIC INSTRUMENTS, 2003, 74 (03) :1457-1459

[2] Nature of monster sawteeth and their relationship to Alfven instabilities in tokamaks [J].

Bernabei, S ;

Bell, MG ;

Budny, RV ;

Fredrickson, ED ;

Gorelenkov, NN ;

Hosea, JC ;

Majeski, R ;

Mazzucato, E ;

Phillips, CK ;

Schilling, G ;

Wilson, JR .

PHYSICAL REVIEW LETTERS, 2000, 84 (06) :1212-1215

[3] The combined effect of EPMs and TAEs on energetic ion confinement and sawtooth stabilization [J].

Bernabei, S ;

Budny, RV ;

Fredrickson, ED ;

Gorelenkov, NN ;

Hosea, JC ;

Phillips, CK ;

White, RB ;

Wilson, JR ;

Petty, CC ;

Pinsker, RI ;

Harvey, RW ;

Smirnov, AP .

NUCLEAR FUSION, 2001, 41 (05) :513-518

[4] HIGH-POWER HEATING IN THE ION-CYCLOTRON RANGE OF FREQUENCIES IN THE WISCONSIN TOKAPOLE-II [J].

BIDDLE, AP ;

SPROTT, JC .

PLASMA PHYSICS AND CONTROLLED FUSION, 1981, 23 (08) :679-691

[5] Fast-ion dynamics in the TEXTOR tokamak measured by collective Thomson scattering [J].

Bindslev, H. ;

Nielsen, S. K. ;

Porte, L. ;

Hoekzema, J. A. ;

Korsholm, S. B. ;

Meo, F. ;

Michelsen, P. K. ;

Michelsen, S. ;

Oosterbeek, J. W. ;

Tsakadze, E. L. ;

Westerhof, E. ;

Woskov, P. .

PHYSICAL REVIEW LETTERS, 2006, 97 (20)

[6] A STANDARD DT SUPERSHOT SIMULATION [J].

BUDNY, RV .

NUCLEAR FUSION, 1994, 34 (09) :1247-1262

[7] STABILIZATION OF SAWTEETH WITH ADDITIONAL HEATING IN THE JET TOKAMAK [J].

CAMPBELL, DJ ;

START, DFH ;

WESSON, JA ;

BARTLETT, DV ;

BHATNAGAR, VP ;

BURES, M ;

CORDEY, JG ;

COTTRELL, GA ;

DUPPEREX, PA ;

EDWARDS, AW ;

CHALLIS, CD ;

GORMEZANO, C ;

GOWERS, CW ;

GRANETZ, RS ;

HAMNEN, JH ;

HELLSTEN, T ;

JACQUINOT, J ;

LAZZARO, E ;

LOMAS, PJ ;

CARDOZO, NL ;

MANTICA, P ;

SNIPES, JA ;

STORK, D ;

STOTT, PE ;

THOMAS, PR ;

THOMPSON, E ;

THOMSEN, K ;

TONETTI, G .

PHYSICAL REVIEW LETTERS, 1988, 60 (21) :2148-2151

[8] REAL-TIME, VIBRATION-COMPENSATED CO2 INTERFEROMETER OPERATION ON THE DIII-D TOKAMAK [J].

CARLSTROM, TN ;

AHLGREN, DR ;

CROSBIE, J .

REVIEW OF SCIENTIFIC INSTRUMENTS, 1988, 59 (07) :1063-1066

[9] DESIGN AND OPERATION OF THE MULTIPULSE THOMSON SCATTERING DIAGNOSTIC ON DIII-D [J].

CARLSTROM, TN ;

CAMPBELL, GL ;

DEBOO, JC ;

EVANKO, R ;

EVANS, J ;

GREENFIELD, CM ;

HASKOVEC, J ;

HSIEH, CL ;

MCKEE, E ;

SNIDER, RT ;

STOCKDALE, R ;

TROST, PK ;

THOMAS, MP .

REVIEW OF SCIENTIFIC INSTRUMENTS, 1992, 63 (10) :4901-4906

[10] Array of neutral particle analyzers at DIII-D [J].

Carolipio, EM ;

Heidbrink, WW .

REVIEW OF SCIENTIFIC INSTRUMENTS, 1997, 68 (01) :304-307

← 1 2 3 4 5 →