Design and measurement of signal processing system for cavity beam position monitor

Design and measurement of signal processing system for cavity beam position monitor

In this paper, in order to achieve the output signal processing of cavity beam position monitor （CBPM）, we develop a digital intermediate frequency receiver architecture based signal processing system, which consists of radio frequency （RF） front end and high speed data acquisition board. The beam p...

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Veröffentlicht in:核技术（英文版） 2013-04, Vol.24 (2), p.1-6
1. Verfasser: WANG Baopeng LENG Yongbin YU Luyang ZHOU Weimin YUAN Renxian CHEN Zhichu
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MATLAB平台
位置分辨率
信号处理算法
信号处理系统
光束
在线测量
显示器
设计目标
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description In this paper, in order to achieve the output signal processing of cavity beam position monitor （CBPM）, we develop a digital intermediate frequency receiver architecture based signal processing system, which consists of radio frequency （RF） front end and high speed data acquisition board. The beam position resolution in the CBPM signal processing system is superior to 1 ktm. Two signal processing algorithms, fast Fourier transform （FFT） and digital down converter （DDC）, are evaluated offiine using MATLAB platform, and both can be used to achieve, the CW input signal, position resolutions of 0.31 μm and 0.10 μm at -16 dBm. The DDC algorithm for its good compatibility is downloaded into the FPGA to realize online measurement, reaching the position resolution of 0.49 lain due to truncation error. The whole system works well and the performance meets design target.
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subjects MATLAB平台
位置分辨率
信号处理算法
信号处理系统
光束
在线测量
显示器
设计目标
title Design and measurement of signal processing system for cavity beam position monitor
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