强激光与粒子束, 2016, 28 (12): 125102, 网络出版: 2016-12-26
1.3 GHz 20 kW固态微波功率源的测试和运行
1.3 GHz 20 kW solid state amplifier for DC-SRF photoinjector at Peking University
直流超导光阴极注入器 固态放大器 高度模块化 全反射 DC-SRF photoinjector solid state amplifier high modularity full reflection
摘要
北京大学3.5-cell直流超导(DC-SRF)光阴极注入器需要一台连续波功率20 kW的1.3 GHz微波功率源。为此北京大学和北京北广科技股份有限公司联合研制了一台由88个放大模块组成的固态微波功率放大器, 这是国内首台L波段连续波大功率固态功率源。在简要介绍这台微波功率放大器设计的基础上, 主要描述其调试过程和重要参数检测并着重讨论了全反射问题。测试结果显示这台功率源的各项参数均达到设计指标, 在输出功率20 kW时的效率为34%, 增益大于85 dB；在整个功率输出范围其增益和相移的变化分别为1.6 dB和9.5°。目前这台功率源已在DC-SRF光阴极注入器调试运行中稳定工作超过2000 h。
Abstract
The 3.5-cell direct current-superconductive (DC-SRF) photoinjector requires a 1.3 GHz 20 kW continuous wave (CW) power amplifier. The R&D of a solid state amplifier (SSA) consisting of 88 unit modules with individual power supplies, which is the first high power (>10 kW) CW L-band SSA in China, has been carried out under the cooperation of Peking University and Beijing BBEF Science & Technology Co. Ltd.(BBEF). The RF test results show that the main parameters of this SSA reach the designed values. The efficiency is 34% at full output power of 20 kW and the gain is higher than 85 dB. The phase shift and gain vary within 9.5° and 1.6 dB respectively when the output power changes from 1 to 20 kW. It has been put into operation for more than 2000 h. After a brief description of the design, this paper mainly introduces the commissioning process of the SSA and discusses the problem of full reflection.
王芳, 林林, 冯立文, 高永凤, 庄德浩, 全胜文, 张保澄, 郝建奎, 张建华, 袁震宇, 刘克新. 1.3 GHz 20 kW固态微波功率源的测试和运行[J]. 强激光与粒子束, 2016, 28(12): 125102. Wang Fang, Lin Lin, Feng Liwen, Gao Yongfeng, Zhuang Dehao, Quan Shengwen, Zhang Baocheng, Hao Jiankui, Zhang Jianhua, Yuan Zhenyu, Liu Kexin. 1.3 GHz 20 kW solid state amplifier for DC-SRF photoinjector at Peking University[J]. High Power Laser and Particle Beams, 2016, 28(12): 125102.
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