Suppression of large edge-localized modes in high-confinement DIII-D plasmas with a stochastic magnetic boundary

被引：774
|
作者：
Evans, TE [1 ]
Moyer, RA
Thomas, PR
Watkins, JG
Osborne, TH
Boedo, JA
Doyle, EJ
Fenstermacher, ME
Finken, KH
Groebner, RJ
Groth, M
Harris, JH
La Haye, RJ
Lasnier, CJ
Masuzaki, S
Ohyabu, N
Pretty, DG
Rhodes, TL
Reimerdes, H
Rudakov, DL
Schaffer, MJ
Wang, G
Zeng, L
机构：
[1] Gen Atom Co, San Diego, CA 92186 USA
[2] Univ Calif San Diego, La Jolla, CA 92093 USA
[3] CEA Cadarache Euratom Assoc, Cadarache, France
[4] Sandia Natl Labs, Albuquerque, NM 87185 USA
[5] Lawrence Livermore Natl Lab, Livermore, CA USA
[6] FZ Julich Euratom Assoc, Julich, Germany
[7] Australian Natl Univ, Canberra, ACT, Australia
[8] Natl Inst Fus Sci, Toki, Gifu, Japan
[9] Univ Calif Los Angeles, Los Angeles, CA USA
[10] Columbia Univ, New York, NY USA
来源：
PHYSICAL REVIEW LETTERS | 2004年 / 92卷 / 23期
关键词：
D O I：
10.1103/PhysRevLett.92.235003
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
A stochastic magnetic boundary, produced by an applied edge resonant magnetic perturbation, is used to suppress most large edge-localized modes (ELMs) in high confinement (H-mode) plasmas. The resulting H mode displays rapid, small oscillations with a bursty character modulated by a coherent 130 Hz envelope. The H mode transport barrier and core confinement are unaffected by the stochastic boundary, despite a threefold drop in the toroidal rotation. These results demonstrate that stochastic boundaries are compatible with H modes and may be attractive for ELM control in next-step fusion tokamaks.
引用
收藏
页码：235003 / 1
页数：4
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