Fast particles-wave interaction in the Alfven frequency range on the Joint European Torus tokamak

被引：36

作者：

Fasoli, A

Borba, D

Breizman, B

Gormezano, C

Heeter, RF

Juan, A

Mantsinen, M

Sharapov, S

Testa, D

机构：

[1] MIT, Dept Phys, Cambridge, MA 02139 USA

[2] MIT, PSFC, Cambridge, MA 02139 USA

[3] Jet Joint Undertaking, Abingdon OX14 3EA, Oxon, England

[4] Inst Super Tecn, EURATOM Assoc, P-1096 Lisbon, Portugal

[5] Univ Texas, Inst Fus Studies, Austin, TX 78712 USA

[6] Royal Inst Technol, Alfven Lab, SE-10044 Stockholm, Sweden

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

来源：

PHYSICS OF PLASMAS | 2000年 / 7卷 / 05期

关键词：

D O I：

10.1063/1.874003

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：

Wave-particle interaction phenomena in the Alfven Eigenmode (AE) frequency range are investigated at the Joint European Torus [P. H. Rebut and B. E. Keen, Fusion Technol. 11, 13 (1987)] using active and passive diagnostic methods. Fast particles are generated by neutral beam injection, ion cyclotron resonance heating, and fusion reactions. External antennas are used to excite stable AEs and measure fast particle drive and damping separately. Comparisons with numerical calculations lead to an identification of the different damping mechanisms. The use of the active AE diagnostic system to generate control signals based on the proximity to marginal stability limits for AE and low-frequency magnetohydrodynamic (MHD) modes is explored. Signatures of the different nonlinear regimes of fast particle driven AE instabilities predicted by theory are found in the measured spectra. The diagnostic use of AE measurements to get information both on the plasma bulk and the fast particle distribution is assessed. (C) 2000 American Institute of Physics. [S1070-664X(00)91505-2].

引用

页码：1816 / 1824

页数：9

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