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大螺旋装置中成像中性粒子分析仪的设计和初步结果

W Paenthong¹, K Ogawa^1,2, S Sangaroon³

¹The Graduate University for Advanced Studies, SOKENDAI, Toki 509-5292, Japan.

The Review of scientific instruments

|August 23, 2024

概括

一种新的成像中性粒子分析仪 (INPA) 提高了对大型螺旋式设备 (LHD) 中快速离子限制的理解. 它使用充电交换中性来测量局限的快离子,提高了对磁动力学不稳定性效应的洞察力.

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
诊断仪器仪器仪表诊断仪器仪表

背景情况:

了解快速离子束对于磁束融合至关重要.
大螺旋装置 (LHD) 需要先进的诊断来研究等离子体行为.
磁动力学 (MHD) 不稳定性可以显著影响快速离子运输.

研究的目的:

介绍和详细介绍新的成像中性粒子分析仪 (INPA) 系统.
提高在LHDs中研究快速离子限制的能力.
调查MHD不稳定性在快速离子传输中的作用.

主要方法:

在2024年初在LHD上安装新的INPA诊断系统.
使用带有闪光器的磁谱仪来测量充电交换的快中性.
采用100纳米碳用于电离和磁偏移,用于能量分析.

主要成果:

INPA提供了被封闭的快离子的能量分辨率的辐射形状.
测量重点是垂直光束离子从5到100keV与~5.75keV的能量分辨率.
最初的结果表明,该系统能够在双向磁场中进行有效的测量.

结论:

在LHD研究中,INPA系统是一个有价值的新诊断工具.
它可以详细研究快速离子的行为和限制.
这些发现将有助于更深入地了解快速离子传输机制,特别是MHD不稳定性.

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