开发一个带状圆形分辨率的宽带ECE成像系统,用于测量KSTAR上的流波动
Dong-Kwon Kim1,2, Jaehyun Lee2, Dong Jae Lee2
1Department of Physics, POSTECH, Pohang, Gyeongbuk 37673, Korea.
The Review of scientific instruments
|August 2, 2024
概括
现在,KSTAR托卡马克上的电子旋发射成像 (ECEI) 系统可视化了较小的等离子波波动和波. 升级增强 toroidal 解析度用于高频流研究.
科学领域:
- 血物理学的等离子体物理学
- 核聚变能源的研究.
- 诊断技术 诊断技术 诊断技术
背景情况:
- KSTAR托卡马克使用电子旋发射成像 (ECEI) 进行MHD规模的流体动力学可视化.
- 最近的进展表明,ECEI对于较小尺度波动和离子循环电子波的能力.
研究的目的:
- 提高ECEI系统的空间和时间分辨率,以进行详细的等离子体流分析.
- 为了使高频等离子波和流在足台演变过程中的测量.
主要方法:
- 将16 GS/s原型子系统集成到G端口ECEI系统中,用于GHz波段测量.
- 升级H端口ECEI系统,采用 toroidally双探测器阵列 (2x12x8通道) 和高速子系统 (2x4通道).
- 设计新的毫米波光学,使用光束传播模拟来提高 toroidal 分辨率.
主要成果:
- 升级的H端口系统实现了8-10厘米的 toroidal 分辨率.
- 能够测量平行波数高达k‖ ∼0.8cm-1. 这样可以测量平行波数.
- 在GHz范围内高频流和等离子波的特征.
结论:
- 升级后的ECEI系统显著提高了研究等离子体流和波的诊断能力.
- 增强的分辨率可以更详细地研究聚变等离子体中小规模现象.
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