Sawtooth-Stabilization and Snake-Excitation during LHCD on the HL-1M

LIU Yi; QIU Xiao-Ming; DONG Yun-Bo; GUO Gan-Cheng; ZHONG Yun-Ze; FU Bing-Zhong; LIU Yong

首页> 中文期刊> 《中国物理快报：英文版》 >Sawtooth-Stabilization and Snake-Excitation during LHCD on the HL-1M

Sawtooth-Stabilization and Snake-Excitation during LHCD on the HL-1M

开具论文收录证明 >>

文献代查 >>

页面导航

摘要
著录项
相关主题

摘要

@@ Lower-hybrid current drive (LHCD) experiments were carried out in the HL-1M hydrogen plasmas. The suppression of sawtooth instabilities by LHCD has been observed in the sawtoothing discharges; an improvement in the global energy confinement time of up to 20% is observed. There is an optimal rf-power range for the complete suppression of the central MHD instabilities. Possible mechanisms for the stabilization of the sawtooth instability are discussed from the measurement of internal inductance and current profile reconstruction using an equilibrium code. A large long-lived snake-like oscillation is newly observed at the end of the sawtooth-stabilization phase of the LHCD operation in the HL-1M tokamak. It is evident that such perturbation is due to a temperature depression caused by impurity accumulation during LHCD.

著录项

来源
《中国物理快报：英文版》 |2004年第2期|360-363|共4页
作者
LIU Yi; QIU Xiao-Ming; DONG Yun-Bo; GUO Gan-Cheng; ZHONG Yun-Ze; FU Bing-Zhong; LIU Yong;
展开▼
作者单位

Southwestern Institute of Physics, PO Box 432, Chengdu 610041;

Southwestern Institute of Physics, PO Box 432, Chengdu 610041;

Southwestern Institute of Physics, PO Box 432, Chengdu 610041;

Southwestern Institute of Physics, PO Box 432, Chengdu 610041;

Southwestern Institute of Physics, PO Box 432, Chengdu 610041;

Southwestern Institute of Physics, PO Box 432, Chengdu 610041;

Southwestern Institute of Physics, PO Box 432, Chengdu 610041;

展开▼
原文格式 PDF
正文语种 chi
中图分类
关键词

Sawtooth-Stabilization and Snake-Excitation during LHCD on the HL-1M

摘要

著录项

相关主题

期刊订阅