多延迟连贯成像光谱学优化用于离子温度测量在转移器等离子体的温德尔斯坦7-X恒星器
David M Kriete1, Valeria Perseo2, Dorothea Gradic2
1Department of Physics, Auburn University, Auburn, Alabama 36849, USA.
The Review of scientific instruments
|July 1, 2024
概括
一个新的连贯成像光谱诊断器准确地测量了W7-X恒星转移器转移器等离子体中的C2+离子温度. 这一进步克服了融合能源研究边缘等离子体测量方面的挑战.
科学领域:
- 血物理学的等离子体物理学
- 频谱学是一种光谱学.
- 核聚变能源的研究.
背景情况:
- 在磁性封闭的等离子边缘中测量离子温度对于聚变能源研究至关重要.
- 凝聚力成像光谱 (CIS) 面临的挑战是由于多普勒扩展和泽曼分裂对光谱线的影响.
- 精确的杂质离子温度 (Ti) 测量对于了解恒星器中的等离子体行为至关重要.
研究的目的:
- 设计,测试和验证一个新的连贯成像光谱 (CIS) 诊断,优化用于测量C2+杂质离子温度 (Ti) 空间分布.
- 克服传统的CIS方法在区分多普勒扩展与泽曼分裂的边缘等离子体方面的局限性.
- 为更精确的血诊断提供增强的光谱信息.
主要方法:
- 开发一种新的双折晶体设计,以尽量减少对齐曼裂变的敏感性.
- 实现像素化多延迟CIS方法,以增加频谱数据采集.
- 在W7-X恒星星体等离子体中对具有重叠视线的高分辨率光谱仪进行验证.
主要成果:
- 优化的CIS诊断成功测量了W7-X转移器等离子体中的Ti空间分布.
- CIS和光谱仪Ti配置文件显示了一致的形状,平均在10%的范围内达成一致.
- 图像显示了与磁场对齐的 toroidally 延长的 Ti 波段,温度在 10 和 40 eV 之间.
结论:
- 新的CIS诊断是用于在恒星器边缘等离子体中准确测量Ti的经过验证的工具.
- 创新的设计有效地分离了多普勒和齐曼效应,提高了测量可靠性.
- 这一进步有助于更好地控制等离子体和理解融合装置.
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