Potential safe termination by laser ablation of high-Z impurity in the HL-1M tokamak | Zendy

Zheng Yongzhen | Zendy; Feng Xingya | Zendy; Zheng Yinjia | Zendy; Guo Gan-Cheng | Zendy; Deming Xu | Zendy; Deng Zhongchao | Zendy

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Potential safe termination by laser ablation of high-Z impurity in the HL-1M tokamak

Author(s) -

Zheng Yongzhen,

Feng Xingya,

Zheng Yinjia,

Guo Gan-Cheng,

Deming Xu,

Deng Zhongchao

Publication year - 2005

Publication title -

acta physica sinica

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.199

H-Index - 47

ISSN - 1000-3290

DOI - 10.7498/aps.54.2809

Subject(s) - impurity , tokamak , plasma , materials science , atomic physics , ablation , current (fluid) , radiation , laser ablation , laser , physics , nuclear physics , optics , thermodynamics , medicine , quantum mechanics

A preliminary experiment for triggering a plasma current quench by means of injection of high_Z impurities has been performed on the HL_1M before the major disruption.Using injection of impurity with higher charge of the nuclei allows u s to increase the radiation cooling on a 3?ms time scale and the electronic tem perature loss contract is 80% before current terminates.It can be a simple and p otential approach to decrease significantly the plasma thermal energy and the ma gnetic field energy before a disruption and to a safe plasma termination.

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