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核聚变与等离子体物理 ›› 2008, Vol. 28 ›› Issue (1): 11-16.

• 等离子体物理学 • 上一篇    下一篇

HL-2A装置SDD软X射线能谱测量结果

张轶泼,杨进蔚,宋先瑛,刘 仪   

  1. (核工业西南物理研究院,成都 610041)
  • 修回日期:2007-03-23 出版日期:2008-03-15 发布日期:2011-04-07
  • 作者简介:张轶泼(1980-),男,河南西平人,核工业西南物理研究院在读研究生,研究方向:受控核聚变等离子体物理实验与诊断。
  • 基金资助:

    国家自然科学基金资助项目(10675124)

Results of soft X-ray spectra measurement using silicon drift detector on the HL-2A tokamak

ZHANG Yi-po, YANG Jin-wei, SONG Xian-ying, LIU Yi   

  1. (Southwestern Institute of Physics, Chengdu 610041)
  • Revised:2007-03-23 Online:2008-03-15 Published:2011-04-07

摘要:

用两道独立的硅漂移探测器(SDD)测量了HL-2A等离子体在电子回旋加热(ECRH)期间的软X射线能谱,给出了电子温度。SDDX射线能谱测量系统所测量的结果与电子回旋辐射(ECE)所测量的电子温度分布能较好地相互吻合。SDDX射线能谱测量结果表明:在轴ECRH期间,等离子体芯部(z0)得到加热的迹象比z=-16.4cm处更加显著,由此可推断出在轴ECRH期间ECW的能量主要沉积在等离子体芯部并且电子温度剖面趋于峰化。对2.41T ≤环向磁场BT≤2.43T, 1.5× 1019 m-3电子密度ne≤2.5×1019m-3300kW≤ECRH功率≤600 kW范围的ECRH数据的统计结果表明:ECRH使得等离子体中的电子得到显著的加热,芯部等离子体电子温度可提升30%80%z=-16.4cm处的电子温度可提升15%55%

关键词: SDD, 软X射线能谱, 电子回旋共振加热

Abstract:

Measurements of soft X-ray spectra during Electron Cyclotron Resonance Heating (ECRH) has been achieved on HL-2A tokamak using two independent silicon drift detector (SDD) systems. Electron temperatures are derived from the measured soft X-ray energy spectra. A comparison indicates that the results measured by SDD are consistent with ECE measurements. Experimental results of soft X-ray spectra measure- ment using SDD show that the increment of electron temperature is larger at z=0 than that at z = 16.4cm chord, so, we can conclude that the energy of ECW is deposited dominantly in the core of plasma and electron temperature profile become peaked during on-axis ECRH (BT=2.4T). The statistic survey of ECRH discharges (2.41T ≤BT2.43T,1.5×1019m-3ne2.5≤1019m-3,300kW≤ECRH power≤600kW) shows that plasma electron temperature rises obviously during on-axis ECRH, especially, in the core of plasma (z=0). It has been observed that the on-axis ECRH can make electron temperature increase up to 30%80% at z=0 chord and 15%55% at z=-16.4cm chord.

Key words: Silicon drift detector (SDD), Soft X-ray spectrum, Electron cyclotron resonance heating

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