在托卡马克 (tokamak) 中模拟来自超热电子的电子循环子发射辐射签名
Guanying Yu1, Yilun Zhu1, Gerrit Kramer2
1University of California, Davis, California 95616, USA.
The Review of scientific instruments
|July 3, 2024
概括
一个新的电子旋发射 (ECE) 建模代码有助于诊断托卡马克中的超热电子. 它揭示了O1和X2等特定的ECE模式如何为这些高能电子群提供独特的见解.
科学领域:
- 血物理学的等离子体物理学
- 核聚变能源的研究.
- 诊断技术 诊断技术 诊断技术
背景情况:
- 电子旋发射 (ECE) 是托卡马克聚变器件中至关重要的诊断工具.
- 了解超热电子群对于等离子体的稳定性和封闭性至关重要.
- 现有的ECE模型可能在准确表示复杂的电子动量分布方面存在局限性.
研究的目的:
- 开发和验证一个多功能电子旋旋电流发射 (ECE) 建模代码.
- 调查不同ECE模式 (O模式和X模式) 对超热电子的敏感性.
- 为了识别ECE签名来诊断托卡马克的超热电子群.
主要方法:
- 开发了一种新的ECE建模代码,能够处理任意的电子动量分布和斜角.
- 使用Poynting定理和完整的反赫密斯张量计算了排放和吸收系数.
- 模拟ECE辐射用于各种等离子体条件,极化 (O模式,X模式) 和循环子波.
主要成果:
- 该代码成功地用任意的电子动量分布和斜角模拟了ECE辐射.
- 确定了超热电子的ECE诊断签名.
- O1模式对高垂直 (v) 和平行 (v‖) 速度的超热电子敏感.
- X2模式主要对高v的超热电子敏感.
结论:
- 开发的ECE建模代码为分析托卡马克等离子体提供了强大的工具.
- 倾斜的ECE系统具有广泛的频率覆盖和X / O两极化,可以有效地诊断超热电子群.
- 特定的ECE模式提供了关于超热电子的速度空间分布的独特信息.
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