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核技术  2015 

储存环中快速束团横向尺寸检测器的设计

DOI: 10.11889/j.0253-3219.2015.hjs.38.070104, PP. 70104-70104

Keywords: 快速束团横向尺寸检测器,逐圈横向尺寸和位置,多阳极光电倍增管,对数处理算法

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Abstract:

一种利用可见光的快速束团横向尺寸检测器(FastBeamTransverseProfileMonitor,FBPM)正在研制过程中,并用于测量快速束流位置和尺寸,该装置将应用到升级改造完成后的合肥光源。FBPM基于日本滨松公司生产的多阳极光电倍增管(Multi-AnodePhoto-MultiplierTube,MAPMT)R5900U-00-L16,它每个通道拥有的有效感光区域为0.8mm′16mm,典型上升时间为0.6ns,因此拥有足够的空间分辨率和时间分辨率。本文介绍了同步光成像系统,设计了低噪声宽带前置放大器,基于光电倍增管4个相邻通道设计了对数处理算法。离线测试结果表明,透镜焦距的测量误差小于?1mm,放大器带宽达到420MHz,4个通道相对参考通道2的增益偏差小于0.2dB,4通道峰值信号偏差不超过2%。

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