一个Q频段调节的多普勒反射散射 (DBS) 系统用于基座和剥离层密度波动和流量测量在DIII-D托卡马克
1Physics and Astronomy Department, University of California Los Angeles (UCLA), Los Angeles, California 90095, USA.
The Review of scientific instruments
|August 5, 2024
概括
为DIII-D托卡马克设计了一种新的Q波段多普勒反射 (DBS) 系统,用于测量基座和剥离层 (SOL) 中的等离子体密度波动和流速. 这种可调节的系统通过改善关键等离子体区域的诊断来增强聚变能源研究.
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:
- 托卡马克的基座和剥离层 (SOL) 是理解等离子体封闭和运输的关键区域.
- 现有的诊断系统在诊断这些特定的血区域时往往存在局限性.
- 精确测量密度波动和流速对于验证等离子体输送模型至关重要.
研究的目的:
- 设计和测试一个新的Q频段调节频率的多普勒反射散射 (DBS) 系统.
- 为了能够探测极形波数 (kñ = 6-8 cm-1),密度波动和流速.
- 为了在DIII-D托卡马克的远端基座和SOL中提供新的测量.
主要方法:
- 开发一个单一,可调整的Q频段 (33-50 GHz) 源来减少系统复杂性.
- 与现有的V频段DBS集成,使用宽带Q和V频段多重处理器.
- 实验室测试一个全尺寸的准光学系统模型,包括光束轮测量.
主要成果:
- 该系统旨在探测DIII-D托卡马克的基座和SOL中的密度波动和流速.
- 实验室测试证实了半光学系统在33-75 GHz频段的性能.
- 该系统旨在在等离子体低电场侧 (ρ = 1.1 到 0.5) 实现大范围的辐射覆盖.
结论:
- 新的Q频调节DBS系统为等离子体诊断提供了一种简化和强大的方法.
- 该系统将为实验运输研究和融合能源研究中的模型验证提供关键数据.
- 开发的系统增强了在tokamaks.com中诊断具有挑战性的等离子体区域的能力.
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