Criteria for Vacuum Breakdown in RF Cavities
Criteria for Vacuum Breakdown in RF Cavities
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DOI：
10.1109/tns.1983.4336689
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发表时间：
1983-08
影响因子：
1.8
通讯作者：
W. Peter;R. Faehl;A. Kadish;L. Thode
中科院分区：
文献类型：
--
作者：
W. Peter;R. Faehl;A. Kadish;L. Thode
提出了一种新的基于Kilpatrick判据的高压定标方法，即在相同的真空度和表面清洁度的初始条件下，可以获得超过Kilpatrick极限两倍以上的电压。计算基于实验观察到的二次电子发射随高于100keV的离子碰撞能增加而减小。我们已经开发了一个通用的二次发射程序包来模拟实际的空腔动力学，并与我们的二维全电磁粒子在单元中的程序CEMIT相结合。讨论了结果，并将其应用于抑制射频加速器器件的真空击穿。
A new high-voltage scaling based on Kilpatrick's criterion is presented that suggests that voltages more than twice the Kilpatrick limit can be obtained with identical initial conditions of vacuum and surface cleanliness. The calculations are based on the experimentally observed decrease in secondary electron emission with increasing ion impact energy above 100 keV. A generalized secondary-emission package has been developed to simulate actual cavity dynamics in conjunction with our 2¿-dimensional fully electromagnetic particle-in-cell code CEMIT. The results are discussed with application to the suppression of vacuum breakdown in rf accelerator devices.