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负离子光束宽度和轴偏移对射频场在光束提取区域的响应

Kenichi Nagaoka^1,2, Haruhisa Nakano^3,4, Taiga Hamajima^4,5

¹National Institute for Fusion Science, Toki, 509-5292, Japan. nagaoka@nifs.ac.jp.

Scientific reports

|January 17, 2025

概括

在负离子源中研究射频 (RF) 场,发现光束宽度和轴的振荡. 这些振荡与ITER射频负离子源的光束分歧有关,可以通过匹配度和使用低射频频率来抑制.

科学领域:

等离子体物理学的物理学
离子源技术离子源技术
核聚变能源研究研究

背景情况:

导电弧排放负离子源对于ITER等核聚变应用至关重要.
了解光束分歧对于高效的等离子体封闭和聚变反应至关重要.
射频 (RF) 场有时会叠加以增强负离子产生.

研究的目的:

实验性地研究单个负离子束的光束分歧特征.
分析叠加的射频 (RF) 场对光束振荡的影响.
确定影响光束振荡和射频负离子源分歧的因素.

主要方法:

试验性调查一个单个负离子光束在一个电缆弧排放负离子源.
控制的无线电频率 (RF) 波场扰动的叠加.
对负离子光束宽度和轴振荡的观察和分析,以应对射频干扰.

主要成果:

由于射频场扰动,观测到负离子束宽度和轴上的振荡.
这些振荡被确定为ITER射频负离子源中较大的光束分歧角度的潜在原因.
波束宽度振荡取决于度和射频频率.

结论:

负离子束中由射频场引起的振荡,有助于增加光束分歧.
在与度匹配的条件下,光束振荡被抑制.
发现较低的射频频率在抑制光束振荡方面更有效.

关键词:

宽容是一种宽容.射频无线电负离子源是一种RF负离子源.有负离子的外.

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