Simultaneous attainment of high electron and ion temperatures in discharges with internal transport barriers in ASDEX upgrade

被引:55
作者
Günter, S [1 ]
Wolf, RC [1 ]
Leuterer, F [1 ]
Gruber, O [1 ]
Kaufmann, M [1 ]
Lackner, K [1 ]
Maraschek, M [1 ]
McCarthy, PJ [1 ]
Meister, H [1 ]
Peeters, A [1 ]
Pereverzev, G [1 ]
Salzmann, H [1 ]
Schade, S [1 ]
Schweinzer, J [1 ]
Suttrop, W [1 ]
机构
[1] Max Planck Inst Plasma Phys, EURATOM Assoc, Garching, Germany
关键词
D O I
10.1103/PhysRevLett.84.3097
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Internal transport barriers have been demonstrated to exist also under conditions with T-c approximate to T-i approximate to keV and predominant electron heating of the tokamak core region. Central electron cyclotron heating was added to neutral beam injection-healed ASDEX Upgrade discharges with a preexisting internal transport barrier, established through programmed current ramping leading to shear reversal. Compared to a reference internal transport barrier discharge without electron cyclotron resonance heating, the electron heat conductivity in the barrier region was found not to increase, in spite of a fivefold increase in electron heat flux, and also angular momentum and ion energy transport did not deteriorate.
引用
收藏
页码:3097 / 3100
页数:4
相关论文
共 14 条
[1]   High core electron confinement regimes in FTU plasmas with low- or reversed-magnetic shear and high power density electron-cyclotron-resonance heating [J].
Buratti, P ;
Barbato, E ;
Bracco, G ;
Cirant, S ;
Crisanti, F ;
Granucci, G ;
Tuccillo, AA ;
Zanza, V ;
Zerbini, M ;
Acitelli, L ;
Alladio, F ;
Angelini, B ;
Apicella, ML ;
Apruzzese, G ;
Bertalot, L ;
Bertocchi, A ;
Borra, M ;
Bruschi, A ;
Buceti, G ;
Cardinali, A ;
Centioli, C ;
Cesario, R ;
Cianfarani, C ;
Ciattaglia, S ;
Cocilovo, V ;
De Angelis, R ;
De Marco, F ;
Esposito, B ;
Frigione, D ;
Gabellieri, L ;
Gatti, G ;
Giovannozzi, E ;
Gourlan, C ;
Grolli, M ;
Imparato, A ;
Kroegler, H ;
Leigheb, M ;
Lovisetto, L ;
Maddaluno, G ;
Maffia, G ;
Marinucci, M ;
Mazzitelli, G ;
Micozzi, P ;
Mirizzi, F ;
Nowak, S ;
Orsitto, FP ;
Pacella, D ;
Panaccione, L ;
Panella, M ;
Ridolfini, VP .
PHYSICAL REVIEW LETTERS, 1999, 82 (03) :560-563
[2]   Internal transport barrier for electrons in JT-60U reversed shear discharges [J].
Fujita, T ;
Ide, S ;
Shirai, H ;
Kikuchi, M ;
Naito, O ;
Koide, Y ;
Takeji, S ;
Kubo, H ;
Ishida, S .
PHYSICAL REVIEW LETTERS, 1997, 78 (12) :2377-2380
[3]   Stationary H-mode discharges with internal transport barrier on ASDEX upgrade [J].
Gruber, O ;
Wolf, RC ;
Dux, R ;
Fuchs, C ;
Günter, S ;
Kallenbach, A ;
Lackner, K ;
Maraschek, M ;
McCarthy, PJ ;
Meister, H ;
Pereversev, G ;
Ryter, F ;
Schweinzer, J ;
Seidel, U ;
Sesnic, S ;
Stäbler, A ;
Stober, J .
PHYSICAL REVIEW LETTERS, 1999, 83 (09) :1787-1790
[4]  
Günter S, 1999, PLASMA PHYS CONTR F, V41, pB231, DOI 10.1088/0741-3335/41/12B/317
[5]   Extension of the JT-60U plasma regimes toward the next-step experimental reactor [J].
Kamada, Y .
PLASMA PHYSICS AND CONTROLLED FUSION, 1999, 41 :B77-B92
[6]   IMPROVED CONFINEMENT WITH REVERSED MAGNETIC SHEAR IN TFTR [J].
LEVINTON, FM ;
ZARNSTORFF, MC ;
BATHA, SH ;
BELL, M ;
BELL, RE ;
BUDNY, RV ;
BUSH, C ;
CHANG, Z ;
FREDRICKSON, E ;
JANOS, A ;
MANICKAM, J ;
RAMSEY, A ;
SABBAGH, SA ;
SCHMIDT, GL ;
SYNAKOWSKI, EJ ;
TAYLOR, G .
PHYSICAL REVIEW LETTERS, 1995, 75 (24) :4417-4420
[7]   Stationary magnetic shear reversal experiments in Tore Supra [J].
Litaudon, X ;
Arslanbekov, R ;
Hoang, GT ;
Joffrin, E ;
KazarianVibert, F ;
Moreau, D ;
Peysson, Y ;
Bibet, P ;
Froissard, P ;
Goniche, M ;
Rey, G ;
Ferron, J ;
Kupfer, K .
PLASMA PHYSICS AND CONTROLLED FUSION, 1996, 38 (09) :1603-1626
[8]  
Pereverzev G., 1991, 542 IPP
[9]  
Rice BW, 1997, PHYS REV LETT, V79, P2694, DOI 10.1103/PhysRevLett.79.2694
[10]   Demonstration of high-performance negative central magnetic shear discharges in the DIII-D tokamak [J].
Rice, BW ;
Burrell, KH ;
Lao, LL ;
Navratil, G ;
Stallard, BW ;
Strait, EJ ;
Taylor, TS ;
Austin, ME ;
Casper, TA ;
Chu, MS ;
Forest, CB ;
Gohil, P ;
Groebner, RJ ;
Heidbrink, WW ;
Hyatt, AW ;
Ikezi, H ;
LaHaye, RJ ;
Lazarus, EA ;
LinLiu, YR ;
Mauel, ME ;
Meyer, WH ;
Rettig, CL ;
Schissel, DP ;
StJohn, HE ;
Taylor, PL ;
Turnbull, AD .
PHYSICS OF PLASMAS, 1996, 3 (05) :1983-1991