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针对高功率密度ECR离子源磁体线圈高压水冷系统压力高、运行维护复杂、冷却能力受限等缺点,提出一种采用自循环蒸发冷却技术的ECR离子源磁体线圈。结合ECR离子源磁体线圈布局结构和运行可靠性要求高的特点,设计基于自循环蒸发冷却原理的高功率密度磁体线圈结构型式,该磁体线圈由饼式单元线圈阵列组成,单元线圈间设置垂直冷却通道,蒸发冷却介质在线圈热量的驱动下沿垂直通道自动流动。按照LECR-DRAGON磁体线圈的参数指标,建立蒸发冷却磁体线圈验证模型,实验结果表明,饼式单元线圈配合垂直冷却通道设计的磁体线圈结构,能够实现窗口电流密度12A/mm~2的负荷要求,并保持长期稳定可靠运行,满足工程实用的需要。
Aiming at the disadvantages of high power density ECR ion coil magnet coil high pressure water cooling system, such as high pressure, complicated operation and maintenance and limited cooling capacity, an ECR ion source magnet coil with self-circulating evaporative cooling technology was proposed. Combined with the structure and reliability of ECR ion source magnet coil design, a high power density magnet coil structure based on self-cycle evaporative cooling principle is designed. The magnet coil consists of a pie slice unit coil array with vertical cooling Channel, evaporative cooling medium in the coil driven by the heat along the vertical channel automatically flow. According to the parameters of LECR-DRAGON coil, the verification model of the evaporative cooling coil is established. The experimental results show that the coil of the coil unit with the vertical cooling channel can achieve the load current requirement of 12A / mm ~ 2. And maintain long-term stable and reliable operation, to meet the practical needs of the project.