摘要
为研究BEPCⅡ直线加速器次谐波聚束系统使用的两台固态放大器(20 kW/142.8 MHz,10kW/571.2 MHz)的相位特性,利用基于现场可编程门阵列(FPGA)的数字测量方法对两台固态放大器的脉内相移和相位稳定度进行了测量。测量系统硬件包括频率综合器、FPGA数字信号处理板和PC;软件部分包括FPGA内部算法、通信及PC端界面程序。该测量系统能真实地反映两台固态放大器的相位特性,为次谐波聚束器的相位补偿提供了参考。
To study the phase characteristics of solid-state amplifiers （20 kW/142.8 MHz, 10 kW/571.2 MHz） in sub-harmonic bunchers（SHBs） of the BEPC II linear accelerator, phase shift in pulse and phase stability are measured using a digital measurement method based on field programmable gate array（FPGA ）. The hardware of the measurement system includes the frequency synthesizer, digital signal processing board（FPGA） and PC, and the software includes an internal algorithm on FPGA, communication procedures and PC client interface procedures. The measurement results of phase characteristics are consistent with the actual situation, which is the basis for the further implement of phase compensation in SHBs.
出处
《强激光与粒子束》
EI
CAS
CSCD
北大核心
2009年第7期1059-1062,共4页
High Power Laser and Particle Beams
基金
北京正负电子对撞机重大改造工程资助课题
关键词
次谐波聚束器
固态放大器
脉内相移
相位稳定度
现场可编程门阵列
sub-harmonic bunchers
solid state amplifier
phase shift in pulse
phase stability
field programmable gate array
