Design and construction of a chopper driven 11.4 GHz traveling wave RF generator
Design and construction of a chopper driven 11.4 GHz traveling wave RF generator
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DOI：
10.1109/pac.1989.73023
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发表时间：
1989
期刊：
影响因子：
--
通讯作者：
J. Haimson;B. Mecklenburg
中科院分区：
文献类型：
--
作者：
J. Haimson;B. Mecklenburg
作者讨论了一个高功率射频发生器的设计和结构特点，包括一个5.7 GHz的斩波系统和11.4 GHz的高群速度，行波结构。该设备是专为高电流兆伏束操作，并已开发的相对论速调管高梯度加速器计划的支持。RF斩波系统在浸没束条件下工作，轴向磁场与束发射度和电子感应加速器谐振要求相匹配，从而使11.4 GHz RF电流最大化。选择TW电路分流阻抗，以在不超过安全电场值的情况下生成高水平的射束感应射频功率。使用具有短相互作用区域的高群速度结构使得能够实现仅1050 ps的RF填充时间，从而提供具有与预期的1000 A 40 ns束脉冲操作一致的快速响应特性的宽带、相位和温度不敏感的电路。
The authors discuss the design and construction features of a high-power RF generator comprising a 5.7-GHz chopping system and 11.4-GHz high group velocity, traveling-wave structures. The device is designed for operation with high current megavoltage beams and has been developed in support of the Relativistic Klystron High Gradient Accelerator program. The RF chopping system operates under immersed beam conditions with an axial magnetic field matched to the beam emittance and betatron resonance requirements so that the 11.4-GHz RF current is maximized. The TW circuit shunt impedance was chosen to enable high levels of beam-induced RF power to be generated without exceeding safe E-field values. The use of high group velocity structures having a short interaction region enabled an RF filling time of only 1050 ps to be achieved, thereby providing a broadband, phase- and temperature-insensitive circuit having fast response characteristics consistent with the intended 1000-A 40-ns beam pulse operation.>