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蒸发冷却技术在高电荷态ECR离子源磁体上的应用——LECR4

, PP. 219-225

Keywords: 高电荷态ECR离子源,蒸发冷却,磁体,线圈,LECR4

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Abstract:

高电荷态ECR离子源磁体的功率密度高、发热量大,磁体线圈的高效冷却是制约性能进一步提升的关键技术之一,是离子源磁体技术研究的重要内容。本文介绍了基于蒸发冷却技术的近代物理研究所第四代高电荷态ECR离子源(LECR4)的研制工作。该离子源磁体线圈采用饼式单元结构,利用线饼单元间的窄隙作为冷却工质的流动通道,液态蒸发冷却工质在通道内吸收线圈热量并汽化,气态的工质向上流动进入冷凝器而冷凝。基于冷却工质的相变过程,建立自循环蒸发冷却热力循环,实现对磁体线圈热量的传输。设计制作完成的LECR4离子源进行了系统试验,试验结果表明,采用自循环蒸发冷却方式的离子源磁体线圈长期稳定运行在60℃左右,各项磁场指标均达到设计要求。

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