TOWARD HIGH-POWER HIGH-GRADIENT TESTING OF MM-WAVE STANDING-WAVE ACCELERATING STRUCTURES
TOWARD HIGH-POWER HIGH-GRADIENT TESTING OF MM-WAVE STANDING-WAVE ACCELERATING STRUCTURES
复制标题
毫米波驻波加速结构的高功率高梯度测试
DOI：
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发表时间：
2018
期刊：
影响因子：
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通讯作者：
B. Spataro
中科院分区：
文献类型：
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作者：
E. Nanni;V. Dolgashev;A. Haase;J. Neilson;Sami G. Tantawi;S. Jawla;S. Schaub;R. Temkin;B. Spataro
我们展示了用于 110 GHz 高梯度测试的单电池加速结构的初步测试结果。这项工作的目的是研究高梯度射频加速器中超高真空射频击穿的基础物理。加速结构由 TM01 圆形波导模式馈电的 π 模式驻波腔组成。我们制造了两种结构，一种采用铜，另一种采用铜银合金。采用准光激励的冷射频测试证实了结构的设计射频性能。这些结构将由产生微秒脉冲的中波回旋振荡器提供动力。来自陀螺仪的 1 兆瓦 RF 功率可以让我们达到 400 MeV/m 的峰值加速梯度。
We present preliminary testing results for single-cell accelerating structures intended for high-gradient testing at 110 GHz. The purpose of this work is to study the basic physics of ultrahigh vacuum RF breakdown in high-gradient RF accelerators. The accelerating structures consist of π-mode standing-wave cavities fed with the TM01 circular waveguide mode. We fabricated two structures one in copper and the other in CuAg alloy. Cold RF tests with quasi-optical excitation confirm the design RF performance of the structures. The structures will be powered with a MW gyrotron oscillator that produces microsecond pulses. One megawatt of RF power from the gyrotron may allow us to reach a peak accelerating gradient of 400 MeV/m.