标题： 升级的光子量热计，用于杰斐逊实验室大厅A康普顿极化仪的积分读出 显示英文标题

标题： Upgraded photon calorimeter with integrating readout for Hall A Compton Polarimeter at Jefferson Lab

摘要： 康普顿偏振计的光子臂在杰弗逊实验室大厅A中已升级，以允许以优于1%的精度进行电子束极化测量。 数据采集系统（DAQ）现在包括一个积分模式，这消除了原始计数-DAQ设置中固有的几个系统不确定性。 光子量能器已被掺铈的GSO晶体取代，该晶体具有明亮的输出和快速的响应，并且在电子束能量从1到6 GeV的测量中使用新的积分方法效果良好。 显示英文摘要

摘要： The photon arm of the Compton polarimeter in Hall A of Jefferson Lab has been upgraded to allow for electron beam polarization measurements with better than 1% accuracy. The data acquisition system (DAQ) now includes an integrating mode, which eliminates several systematic uncertainties inherent in the original counting-DAQ setup. The photon calorimeter has been replaced with a Ce-doped GSO crystal, which has a bright output and fast response, and works well for measurements using the new integrating method at electron beam energies from 1 to 6 GeV.