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首页> 中文期刊> 《中国物理快报：英文版》 >Establishment of Configuration with Optimized Current Profile in Pellet Fuelled Discharge on HL-2A

Establishment of Configuration with Optimized Current Profile in Pellet Fuelled Discharge on HL-2A

         
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摘要

A sawtooth-free period is produced following the pellet injection in the pellet fuelled discharge of qα=3.4(where qα is the safety factor at the plasma boundary)in the HL-2A tokamak.Establishment of the current profile such as in the hybrid scenario is studied under the condition of pellet injection in HL-2A.It is shown that a q-profile of weak negative shear is produced immediately after the pellet injection,and it then evolves to a broad flat profile with q0>1(where q0 is the safety factor at the centre).The measured MHD mode structures evidence consistencies of the evaluated q-profile with locations of the q=1 surface in the sawtoothing period and of the q=2 surface in the sawtooth-free period.TRANSP analysis indicates that the energy confinement is enhanced substantially during and after pellet injection.which is resulted from the q-profile optimization and the plasma density peaking.

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  • 来源
    《中国物理快报：英文版》 |2008年第2期|628-631|共4页
  • 作者

    GAO Qiag-Di; LONG Yong-Xing; DING Xuan-Tong; PAN Yu-Dong; ZHOU Yan; WANG Hao;

  • 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;

  • 原文格式 PDF
  • 正文语种 chi
  • 中图分类 物理学;
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