超导加速器低电平系统射频前端设计与实现  

Design and implementation of the low level control system RF front-end of the superconducting accelerator

作　　者：劳成龙 冯立文[3] 王芳[3] 杨兴繁[2] 鲁向阳[3] 

机构地区：[1]中国工程物理研究院研究生部,四川绵阳621999 [2]中国工程物理研究院应用电子学研究所,四川绵阳621999 [3]北京大学重离子研究所,北京100871

出　　处：《太赫兹科学与电子信息学报》2015年第3期462-467,共6页Journal of Terahertz Science and Electronic Information Technology

基　　金：国家重大科学仪器设备开发专项基金资助项目(2011YQ130018)

摘　　要：设计了中物院太赫兹科研装置超导加速器低电平控制系统的射频前端部分,采用了信号源8663A与直接信号发生器板卡AD9858结合的方案,产生射频前端所需的30.72 MHz中频信号和1330.72 MHz本振信号。采用AD9510时钟板产生ADC和DAC采样所需的频率122.88 MHz和245.76 MHz,采样信号时间抖动仅为4 ps,由此引起的幅值采样误差和相位采样误差分别为±0.04%和±0.025%,符合设计要求。The Radio Frequency(RF) front-end for the superconducting cavity of the high average power THz equipment is designed and implemented. By combining the signal source 8663 A and the AD9858 Direct Digital Synthesizer(DDS), a signal with 30.72 MHz intermediate frequency and a local oscillator signal of 1 330.72 MHz are generated. The 30.72 MHz signal generated by the AD9858 is used as the reference signal of the clock board AD9510 for generating Analog to Digital Converter(ADC) and Digital to Analog Converter(DAC) driving sampling signal of 122.88 MHz and 245.76 MHz respectively. According to the measurement, the clock signal timing jitter is around 4 ps, the amplitude and phase of sampling error caused by the jitter is ±0.04% and ±0.025% respectively, which is in line with the design requirements.

关 键 词：射频前端 时钟分配 上下变频 低电平控制 超导加速器 

分 类 号：TL503[核科学技术—核技术及应用]