通过使用固态中性粒子分析仪信号和中性束注入功率的振荡来研究快速离子群体
E Parr1, K G McClements1, W W Heidbrink2
1UKAEA, Culham Science Centre, Oxfordshire OX14 3DB, United Kingdom.
The Review of scientific instruments
|January 17, 2024
概括
一种新方法使用中性粒子分析仪信号和中性光束注入功率准确确定等离子体中的快离子密度. 这种技术隔离了关键数据,改善了用于核聚变能源研究的等离子体诊断.
科学领域:
- 等离子体物理学的物理学
- 核聚变能源的使用方式
- 诊断技术 诊断技术
背景情况:
- 准确测量快离子密度对于理解磁性封闭的聚变装置中的等离子体行为至关重要.
- 传统的诊断方法往往由于被动和背景噪声而受到信号复杂性的影响.
- 提高诊断能力对于推进核聚变能源研究至关重要.
研究的目的:
- 开发一种新的方法来确定快离子群体密度作为距离半径 (λ,R) 的函数.
- 通过有效地将有用的信号与噪声分离,提高等离子体诊断的准确性.
- 在现实世界的融合实验中,与已建立的技术对比验证新方法.
主要方法:
- 使用来自固态中性粒子分析仪 (ssNPA) 的信号.
- 分析中性光束注入 (NBI) 功率输出数据.
- 使用信号处理来隔离ssNPA信号中的NBI功率振荡,以区分主动和被动/背景信号.
主要成果:
- 开发的方法成功地确定了快离子群体密度.
- 在NBI功率的振荡仅在主动ssNPA信号中被识别出来,使有效的噪声分离成为可能.
- 结果在与Mega-Amp球形托卡马克升级标准技术相比显示出良好的一致性.
结论:
- 新的ssNPA和NBI数据分析方法提供了一种可靠的方法来测量快离子密度.
- 这种技术通过过复杂的背景信号来显著提高数据质量.
- 这些发现有助于更精确的等离子体诊断,支持磁束聚变的发展.
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