毫米波高波数散射诊断在EAST和NSTX-U的发展
Pengjun Sun1, Xianzi Liu2, Yang Ren3
1Institute of Plasma Physics, Chinese Academy of Sciences, Hefei, Anhui 230031, China.
The Review of scientific instruments
|August 26, 2024
概括
实验先进超导托卡马克 (EAST) 的新型4通道高k极极形散射系统将测量电子密度波动. 该系统有助于研究等离子体不稳定性,例如电子温度梯度 (ETG) 模式.
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
- 诊断发展 诊断发展
背景情况:
- 实验高级超导托卡马克 (EAST) 需要先进的诊断来研究等离子体的行为.
- 了解高k电子密度波动对于控制聚变装置中的等离子体不稳定性至关重要.
- 现有的诊断能力在探测小规模流时可能是有限的.
研究的目的:
- 开发和实施一个新的4通道,高k波形毫米波集体散射系统,用于EAST.
- 测量高k电子密度波动及其极形波数谱 (kθ).
- 为了研究离子和电子尺度等离子体不稳定性,包括电子温度梯度 (ETG) 模式.
主要方法:
- 在东东托卡马克的特定港口部署270GHz毫米波探测束.
- 使用大光圈光学来捕捉四个同时角度的散射辐射.
- 为高k散射诊断量身定制的光束跟踪和数据解释模块的开发.
主要成果:
- 成功开发并进行实验室测试的4通道,高k波状散射系统.
- 该系统旨在测量高达20厘米-1的波形波数.
- 目前EAST的安装正在进行中,可进行现场测量.
结论:
- 新的高k散射系统显著提高了EAST探测小规模电子密度波动的能力.
- 这种诊断进步将为了解和减轻等离子体不稳定性提供关键数据.
- 开发的模块也适用于其他托卡马克设施,如NSTX-U.
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