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Suppression of runaway electrons during electron cyclotron resonance heating on HL-2A tokamak

Published online by Cambridge University Press:  10 September 2009

JIN-WEI YANG ,
YI-PO ZHANG ,
XU LI ,
XIAN-YING SONG ,
GUO-LIANG YUAN ,
MIN LIAO ,
LI-QUN HU ,
SHI-YAO LIN  and
QING-WEI YANG
JIN-WEI YANG
Affiliation:
Southwestern Institute of Physics, PO Box 432, Chengdu 610041, Sichuan, China ([email protected]; [email protected]; [email protected]; [email protected]; [email protected]; [email protected]; [email protected])
YI-PO ZHANG
Affiliation:
Southwestern Institute of Physics, PO Box 432, Chengdu 610041, Sichuan, China ([email protected]; [email protected]; [email protected]; [email protected]; [email protected]; [email protected]; [email protected])
XU LI
Affiliation:
Southwestern Institute of Physics, PO Box 432, Chengdu 610041, Sichuan, China ([email protected]; [email protected]; [email protected]; [email protected]; [email protected]; [email protected]; [email protected])
XIAN-YING SONG
Affiliation:
Southwestern Institute of Physics, PO Box 432, Chengdu 610041, Sichuan, China ([email protected]; [email protected]; [email protected]; [email protected]; [email protected]; [email protected]; [email protected])
GUO-LIANG YUAN
Affiliation:
Southwestern Institute of Physics, PO Box 432, Chengdu 610041, Sichuan, China ([email protected]; [email protected]; [email protected]; [email protected]; [email protected]; [email protected]; [email protected])
MIN LIAO
Affiliation:
Southwestern Institute of Physics, PO Box 432, Chengdu 610041, Sichuan, China ([email protected]; [email protected]; [email protected]; [email protected]; [email protected]; [email protected]; [email protected])
LI-QUN HU
Affiliation:
Institute of Plasma physics, Chinese Academy of Science, Hefei 230031, Anhui, China ([email protected]; [email protected])
SHI-YAO LIN
Affiliation:
Institute of Plasma physics, Chinese Academy of Science, Hefei 230031, Anhui, China ([email protected]; [email protected])
QING-WEI YANG
Affiliation:
Southwestern Institute of Physics, PO Box 432, Chengdu 610041, Sichuan, China ([email protected]; [email protected]; [email protected]; [email protected]; [email protected]; [email protected]; [email protected])
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Abstract

The statistical analysis of heating effect and the cross-correlation analysis of both electron temperature and loop voltage have been done during electron cyclotron resonance heating (ECRH). The behavior of runaway electrons in the flat-top phase during ECRH are analyzed using experimental data. It is shown that the runaway population is indeed suppressed or even quenched when the toroidal electric field ET is reduced below the threshold electric field Eth by high-power and long-duration ECRH. The physical mechanism of runaway suppression is explored by the resonant interaction between the electron cyclotron waves and the energetic runaway electrons.

Type
Papers
Information
Journal of Plasma Physics , Volume 76 , Issue 1 , February 2010 , pp. 75 - 85
Copyright
Copyright © Cambridge University Press 2009

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