Performance of the PrimEx Electromagnetic Calorimeter
Performance of the PrimEx Electromagnetic Calorimeter
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PrimEx 电磁热量计的性能
DOI：
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发表时间：
2006
期刊：
影响因子：
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通讯作者：
A. Gasparyan
中科院分区：
文献类型：
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作者：
M. Kubantsev;I. Larin;A. Gasparyan
我们报告的设计和性能的混合电磁量能器组成的1152 PbWO 4晶体和576铅玻璃块的PrimEx实验在杰斐逊实验室。该探测器是为了通过Primakoff效应高精度测量中性π介子寿命而建造的。热量计的安装和调试在2004年秋季完成了第一次物理运行。给出了量热计的能量和位置分辨率。获得了1.3MeV/c ~ 2的π0质量分辨率和0.34mrad的产生角分辨率，表明该实验能够在1%水平上提取π0寿命。
We report the design and performance of the hybrid electromagnetic calorimeter consisting of 1152 PbWO4 crystals and 576 lead glass blocks for the PrimEx experiment at the Jefferson Laboratory. The detector was built for high precision measurement of the neutral pion lifetime via the Primakoff effect. Calorimeter installation and commissioning was completed with the first physics run in fall of 2004. We present the energy and position resolution of the calorimeter. Obtained π0 mass resolution of 1.3MeV/c2 and its production angle resolution of 0.34mrad demonstrate the ability of the experiment to extract the π0 lifetime on one percent level.