Fast ion loss in a 'sea-of-TAE'

被引：39

作者：

Fredrickson, E. D.

Gorelenkov, N. N.

Bell, R. E.

Menard, J. E.

Roquemore, A. L.

Kubota, S.

Crocker, N. A.

Peebles, W.

机构：

[1] Princeton Plasma Phys Lab, Princeton, NJ 08543 USA

[2] Univ Calif Los Angeles, Los Angeles, CA USA

来源：

NUCLEAR FUSION | 2006年 / 46卷 / 10期

关键词：

D O I：

10.1088/0029-5515/46/10/S09

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：

Super-thermal fast ions provide a source of free energy to excite instabilities, which in turn can enhance the loss of fast ions. It has been proposed that when multiple modes with resonances closely spaced in phase space reach sufficient amplitude so that the fast ion trajectories overlap, very rapid non-linear growth can occur. The modification of the fast ion distribution by this loss may in turn excite additional, otherwise stable, modes, leading to an 'avalanche' effect greatly enhancing the transport of fast ions (Berk H.L., Brelzman B.N., Fitzpatrick J. and Wong H.V.. 1995 Nucl. Fusion 35 1661). It has been proposed that in ITER (ITER Physics Basis Editors et al 1999 Nucl. Fusion 39 2137), the transport of fast ions will be through a similar interaction of many modes. In NSTX (Ono M. et al 2000 Nucl. Fusion 40 557) bursts of multiple TAE-like instabilities are correlated with fast ion losses in a manner which qualitatively resembles avalanche behaviour.

引用

页码：S926 / S932

页数：7

共 45 条

[31] Millimeter-wave reflectometry for electron density profile and fluctuation measurements on NSTX [J].

Kubota, S ;

Nguyen, XV ;

Peebles, WA ;

Zeng, L ;

Doyle, EJ ;

Roquemore, AL .

REVIEW OF SCIENTIFIC INSTRUMENTS, 2001, 72 (01) :348-351

[32] RECONSTRUCTION OF CURRENT PROFILE PARAMETERS AND PLASMA SHAPES IN TOKAMAKS [J].

LAO, LL ;

STJOHN, H ;

STAMBAUGH, RD ;

KELLMAN, AG ;

PFEIFFER, W .

NUCLEAR FUSION, 1985, 25 (11) :1611-1622

[33] 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

[34] Physics of energetic particle-driven instabilities in the START spherical tokamak [J].

McClements, KG ;

Gryaznevich, MP ;

Sharapov, SE ;

Akers, RJ ;

Appel, LC ;

Counsell, GF ;

Roach, CM ;

Majeski, R .

PLASMA PHYSICS AND CONTROLLED FUSION, 1999, 41 (05) :661-678

[35] Exploration of spherical torus physics in the NSTX device [J].

Ono, M ;

Kaye, SM ;

Peng, YKM ;

Barnes, G ;

Blanchard, W ;

Carter, MD ;

Chrzanowski, J ;

Dudek, L ;

Ewig, R ;

Gates, D ;

Hatcher, RE ;

Jarboe, T ;

Jardin, SC ;

Johnson, D ;

Kaita, R ;

Kalish, M ;

Kessel, CE ;

Kugel, HW ;

Maingi, R ;

Majeski, R ;

Manickam, J ;

McCormack, B ;

Menard, J ;

Mueller, D ;

Nelson, BA ;

Nelson, BE ;

Neumeyer, C ;

Oliaro, G ;

Paoletti, F ;

Parsells, R ;

Perry, E ;

Pomphrey, N ;

Ramakrishnan, S ;

Raman, R ;

Rewoldt, G ;

Robinson, J ;

Roquemore, AL ;

Ryan, P ;

Sabbagh, S ;

Swain, D ;

Synakowski, EJ ;

Viola, M ;

Williams, M ;

Wilson, JR .

NUCLEAR FUSION, 2000, 40 (3Y) :557-561

[36]

Perkins FW, 1999, NUCL FUSION, V39, P2137, DOI 10.1088/0029-5515/39/12/301

[37] Spectroscopic determination of the internal amplitude of frequency sweeping TAE [J].

Pinches, SD ;

Berk, HL ;

Gryaznevich, MP ;

Sharapov, SE .

PLASMA PHYSICS AND CONTROLLED FUSION, 2004, 46 (07) :S47-S57

[38] Equilibrium properties of spherical torus plasmas in NSTX [J].

Sabbagh, SA ;

Kaye, SM ;

Menard, J ;

Paoletti, F ;

Bell, M ;

Bell, RE ;

Bialek, JM ;

Bitter, M ;

Fredrickson, ED ;

Gates, DA ;

Glasser, AH ;

Kugel, H ;

Lao, LL ;

LeBlanc, BP ;

Maingi, R ;

Maqueda, RJ ;

Mazzucato, E ;

Mueller, D ;

Ono, M ;

Paul, SF ;

Peng, M ;

Skinner, CH ;

Stutman, D ;

Wurden, GA ;

Zhu, W .

NUCLEAR FUSION, 2001, 41 (11) :1601-1611

[39] Systematic study of toroidicity-induced Alfven eigenmodes at low-q discharges in JT-60U [J].

Saigusa, M ;

Kimura, H ;

Kusama, Y ;

Kramer, GJ ;

Ozeki, T ;

Moriyama, S ;

Oikawa, T ;

Neyatani, Y ;

Kondoh, T .

PLASMA PHYSICS AND CONTROLLED FUSION, 1998, 40 (09) :1647-1659

[40] Experimental studies of instabilities and confinement of energetic particles on JET and MAST [J].

Sharapov, SE ;

Alper, B ;

Andersson, F ;

Baranov, YF ;

Berk, HL ;

Bertalot, L ;

Borba, D ;

Boswell, C ;

Breizman, BN ;

Buttery, R ;

Challis, CD ;

de Baar, M ;

de Vries, P ;

Eriksson, LG ;

Fasoli, A ;

Galvao, R ;

Goloborod'ko, V ;

Gryaznevich, MP ;

Hastie, RJ ;

Hawkes, NC ;

Helander, P ;

Kiptily, VG ;

Kramer, GJ ;

Lomas, PJ ;

Mailloux, J ;

Mantsinen, MJ ;

Martin, R ;

Nabais, F ;

Nave, MF ;

Nazikian, R ;

Noterdaeme, JM ;

Pekker, MS ;

Pinches, SD ;

Pinfold, T ;

Popovichev, SV ;

Sandquist, P ;

Stork, D ;

Testa, D ;

Tuccillo, A ;

Voitsekhovich, I ;

Yavorskij, V ;

Young, NP ;

Zonca, F .

NUCLEAR FUSION, 2005, 45 (09) :1168-1177

← 1 2 3 4 5 →