H-mode pedestal and L-H transition studies on Alcator C-Mod

被引:42
作者
Hughes, J. W. [1 ]
Hubbard, A. E. [1 ]
Mossessian, D. A. [1 ]
LaBombard, B. [1 ]
Biewer, T. M. [1 ]
Granetz, R. S. [1 ]
Greenwald, M. [1 ]
Hutchinson, I. H. [1 ]
Irby, J. H. [1 ]
Lin, Y. [1 ]
Marmar, E. S. [1 ]
Porkolab, M. [1 ]
Rice, J. E. [1 ]
Snipes, J. A. [1 ]
Terry, J. L. [1 ]
Wolfe, S. [1 ]
Zhurovich, K. [1 ]
机构
[1] MIT, Plasma Sci & Fus Ctr, Cambridge, MA 02139 USA
关键词
Alcator C-Mod tokamak; edge transport barrier; H-mode threshold;
D O I
10.13182/FST07-A1425
中图分类号
TL [原子能技术]; O571 [原子核物理学];
学科分类号
0827 ; 082701 ;
摘要
H-mode research on Alcator C-Mod is described, with a focus on the edge transport barrier (ETB). ETB pedestals are characterized using several diagnostics, leading to a thorough description of profile structure in H-mode. L-H transition criteria are discussed, along with the fast evolution of the pedestal following the L-H transition. H-mode regimes are described in terms of their edge transport characteristics and the local edge parameters favoring each. Empirical scalings of the pedestal with operational parameters are found, helping to illuminate physics governing the pedestal structure, and the relationship between edge transport and global confinement is discussed. Dimensionless comparisons between discharges on different tokamaks are discussed. Finally, ongoing work and directions for the future are described.
引用
收藏
页码:317 / 341
页数:25
相关论文
共 122 条
[91]   Diamagnetic stabilization of ideal ballooning modes in the edge pedestal [J].
Rogers, BN ;
Drake, JF .
PHYSICS OF PLASMAS, 1999, 6 (07) :2797-2801
[92]  
RYTER F, 1993, P EPS C CONTROLL 1 C, V17, P15
[93]   MHD stability analysis of diagnostic optimized configuration shots in JET [J].
Saarelma, S ;
Parail, V ;
Andrew, Y ;
de la Luna, E ;
Kallenbach, A ;
Kempenaars, M ;
Korotkov, A ;
Loarte, A ;
Lönnroth, J ;
Monier-Garbet, P ;
Stober, J ;
Suttrop, W .
PLASMA PHYSICS AND CONTROLLED FUSION, 2005, 47 (05) :713-731
[94]   MHD stability analysis of type II ELMs in ASDEX Upgrade [J].
Saarelma, S ;
Günter, S ;
Horton, LD .
NUCLEAR FUSION, 2003, 43 (04) :262-267
[95]  
SAIBENE G, 2001, P 28 C CONTR FUS PLA
[96]   Neoclassical conductivity and bootstrap current formulas for general axisymmetric equilibria and arbitrary collisionality regime [J].
Sauter, O ;
Angioni, C ;
Lin-Liu, YR .
PHYSICS OF PLASMAS, 1999, 6 (07) :2834-2839
[97]   BIFURCATION-THEORY OF POLOIDAL ROTATION IN TOKAMAKS - A MODEL FOR THE L-H TRANSITION [J].
SHAING, KC ;
CRUME, EC .
PHYSICAL REVIEW LETTERS, 1989, 63 (21) :2369-2372
[98]   The quasi-coherent signature of enhanced Dα H-mode in Alcator C-Mod [J].
Snipes, JA ;
LaBombard, B ;
Greenwald, M ;
Hutchinson, IH ;
Irby, J ;
Lin, Y ;
Mazurenko, A ;
Porkolab, M .
PLASMA PHYSICS AND CONTROLLED FUSION, 2001, 43 (04) :L23-L30
[99]   1ST OHMIC H-MODES IN ALCATOR C-MOD [J].
SNIPES, JA ;
GRANETZ, RS ;
GREENWALD, M ;
HUTCHINSON, IH ;
GARNIER, D ;
GOETZ, JA ;
GOLOVATO, SN ;
HUBBARD, A ;
IRBY, JH ;
LABOMBARD, B ;
LUKE, T ;
MARMAR, ES ;
NIEMCZEWSKI, A ;
STEK, PC ;
TAKASE, Y ;
TERRY, JL ;
WOLFE, SM .
NUCLEAR FUSION, 1994, 34 (07) :1039-1044
[100]   Characteristics of high-confinement modes in Alcator C Mod [J].
Snipes, JA ;
Boivin, RL ;
Christensen, C ;
Fiore, C ;
Garnier, D ;
Goetz, J ;
Golovato, SN ;
Graf, M ;
Granetz, RS ;
Greenwald, M ;
Hubbard, A ;
Hutchinson, IH ;
Irby, J ;
LaBombard, B ;
Marmar, ES ;
Niemczewski, A ;
OShea, P ;
Porkolab, M ;
Stek, P ;
Takase, Y ;
Terry, JL ;
Umansky, M ;
Wolfe, SM .
PHYSICS OF PLASMAS, 1996, 3 (05) :1992-1998