Breakdown and field emission conditioning of Cu, Mo, and W

被引：28
作者：
Kildemo, M [1 ]
Calatroni, S [1 ]
Taborelli, M [1 ]
机构：
[1] CERN, European Org Nucl Res, CH-1211 Geneva 23, Switzerland
来源：
PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS | 2004年 / 7卷 / 09期
关键词：
D O I：
10.1103/PhysRevSTAB.7.092003
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
The ultrahigh-vacuum electrical breakdown characteristics of copper, molybdenum, and tungsten have been explored in a setup based on a capacitor discharge. Upon repeated sparking, tungsten and molybdenum showed improvement of the maximum applicable field before breakdown ( conditioning) in contrast to copper, which experienced alternate improvement and degrading. After conditioning, tungsten withstood the highest applied field followed by molybdenum and copper. This behavior was correlated with that of the field enhancement factor beta extracted from measurements of the field emission current. These results are compared with the tests performed on 30 GHz test accelerating structures for the future Compact Linear Collider.
引用
收藏
页码：82 / 88
页数：7
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