在EAST上有一个E波段多通道多普勒反射系统.
1School of Nuclear Science and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China.
The Review of scientific instruments
|December 18, 2023
概括
一个新的E频道多普勒反射系统在EAST测量了5个位置的等离子体流. 这种先进的诊断工具提供灵活的频率选择和可调节的角度,用于详细的流研究.
科学领域:
- 血物理学的等离子体物理学
- 核聚变能源的研究.
- 微波诊断仪器 微波诊断仪器
背景情况:
- 流显著影响聚变装置中的等离子体封闭.
- 精确测量流对于理解和控制等离子体行为至关重要.
- 现有的诊断系统在空间分辨率或灵活性方面可能存在局限性.
研究的目的:
- 引入一种新型的多通道多普勒反射系统 (DBS) 用于等离子体流的测量.
- 在实验高级超导托卡马克 (EAST) 上详细介绍 E 频段 DBS 系统的硬件设计和功能.
- 介绍初步结果并证明系统在分析等离子体流中的有效性.
主要方法:
- 在EAST.上安装一个E频段 (60-90 GHz) 多通道DBS系统,在EAST.上具有X模式偏振.
- 使用31个固定的微波频率 (1 GHz间隔) 和一个可调调的参考信号进行探测.
- 使用射线跟踪模拟来确定散射位置和垂直波数 (k).
主要成果:
- 在五个辐射位置同时测量等离子体流.
- 灵活选择探测信号,可在E频段调节,可在一次拍摄或两次拍摄之间调节.
- 达到波数范围为4-25厘米-1的波数范围,分辨率为Δk/k ≤0.35.
结论:
- 新的E频段DBS系统是研究EAST上的等离子体流的强大诊断工具.
- 该系统在频率和角度调整方面的灵活性提高了它在各种实验条件中的实用性.
- 最初的结果表明,该系统能够提供详细的了解等离子体流动力学.
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