实施低温光谱仪用于JET高分辨率的森散射诊断,用于中断等离子体测量
1United Kingdom Atomic Energy Authority, Culham Campus, Abingdon, Oxon OX14 3DB, United Kingdom.
The Review of scientific instruments
|July 22, 2024
概括
这项研究升级了高分辨率森散射诊断仪,用于在碎片注射实验期间在热灭之前和之后测量低温等离子体. 这一进步有助于理解等离子体物理和干扰.
科学领域:
- 等离子体物理学的物理学
- 融合能源研究 融合能源研究
- 诊断系统 诊断系统
背景情况:
- 高分辨率森散射 (HRTS) 诊断对于血表征至关重要.
- 了解低温等离子体动态对于聚变能源研究至关重要,特别是在热火 (TQ) 等事件期间.
- 破碎颗粒注射 (SPI) 是用于血控制和干扰缓解的关键技术.
研究的目的:
- 在JET上升级现有的HRTS诊断系统,以测量低温等离子体 (1-500 eV).
- 通过分析TQ前后等离子体条件,增强对破碎颗粒注射 (SPI) 物理学的理解.
- 在SPI实验中提供有价值的电子密度和温度概况数据.
主要方法:
- 整合了四个专门的光谱仪,用于通过光纤连接到原始HRTS系统的低温等离子体测量.
- 灵活的空间点分布 (最多12个点) 在JET外侧中平面上用于SPI活动.
- 在其他JET实验中利用以前未使用的纤维组进行中央等离子体测量,以收集中断数据.
主要成果:
- 升级后的森低温散射系统已成功安装在JET.上并投入使用.
- 与标准HRTS诊断的交叉校准证实了系统的准确性.
- 在SPI活动期间,在TQ前后的低温等离子体中获得了可靠的电子密度和温度概况.
结论:
- 升级后的HRTS系统有效地测量低温等离子体,为SPI物理提供关键数据.
- 该系统的灵活性允许多种类型的等离子体谱测量,有助于SPI研究和中断分析.
- 这种增强显著提高了JET的诊断能力,以了解瞬态等离子体现象.
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