High-power coupler component test stand status and results
High-power coupler component test stand status and results
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DOI：
10.1109/pac.2007.4441252
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发表时间：
2007-06
期刊：
影响因子：
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通讯作者：
B. Rusnak;F. Wang;C. Adolphsen;G. Bowden;C. Nantista;R. Swent;J. Tice;B. McKee;K. Jobe;Z. Li;L. Ge
中科院分区：
文献类型：
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作者：
B. Rusnak;F. Wang;C. Adolphsen;G. Bowden;C. Nantista;R. Swent;J. Tice;B. McKee;K. Jobe;Z. Li;L. Ge
ILC 等超导加速器应用的基本功率耦合器是复杂的传输线组件，必须同时适应苛刻的射频功率、低温和清洁度限制。当这些耦合器经过射频调节时，观察到的响应是耦合器所有部分的总和，并且很难确定主导调节响应的具体特征。为了更好地理解和表征射频调节现象，以提高性能并减少调节时间，SLAC 建造了一个高功率耦合器组件测试台。该测试台工作频率为 1.3 GHz，旨在独立测量 TTFIII 耦合器选定组件的调节行为，包括外导体波纹管、管过渡、镀铜、表面处理以及冷窗几何形状和涂层。介绍了测试台、测量方法以及迄今为止获得的结果的摘要。
Fundamental power couplers for superconducting accelerator applications like the ILC are complicated transmission line assemblies that must simultaneously accommodate demanding RF power, cryogenic, and cleanliness constraints. When these couplers are RF conditioned, the observed response is an aggregate of all the parts of the coupler and the specific features that dominate the conditioning response are hard to determine. To better understand and characterize RF conditioning phenomena toward improving performance and reducing conditioning time, a high-power coupler component test stand has been built at SLAC. Operating at 1.3 GHz, this test stand was designed to measure the conditioning behavior of select components of the TTFIII coupler independently, including outer-conductor bellows, tube transitions, copper plating, surface preparations, and cold window geometries and coatings. A description of the test stand, the measurement approach, and a summary of the results obtained so far are presented.