Operational and theoretical temperature considerations in a Penning surface plasma source
Operational and theoretical temperature considerations in a Penning surface plasma source
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潘宁表面等离子体源的操作和理论温度考虑因素
DOI：
10.1063/1.4916440
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
V. Dudnikov
中科院分区：
文献类型：
--
作者：
D. Faircloth;S. Lawrie;H. D. Costa;V. Dudnikov
在 ANSYS 中开发了 ISIS Penning 表面等离子体源的完整详细 3D 热模型。改变施加到阳极和阴极的放电功率的比例，直到模拟与操作温度观察结果匹配。对可能的接触热阻范围进行了建模，估算出 67% 到 85% 的放电功率流向阴极。瞬态模型显示了在一系列占空比的放电脉冲期间电极表面温升。讨论了这些测量的含义，并提出了控制铯覆盖范围的机制。阐述了大电流长脉冲源的设计要求。
A fully detailed 3D thermal model of the ISIS Penning surface plasma source is developed in ANSYS. The proportion of discharge power applied to the anode and cathode is varied until the simulation matches the operational temperature observations. The range of possible thermal contact resistances are modelled, which gives an estimation that between 67% and 85% of the discharge power goes to the cathode. Transient models show the electrode surface temperature rise during the discharge pulse for a range of duty cycles. The implications of these measurements are discussed and a mechanism for governing cesium coverage proposed. The requirements for the design of a high current long pulse source are stated.