A measurement of the energy and timing resolution of the GlueX Forward Calorimeter using an electron beam
A measurement of the energy and timing resolution of the GlueX Forward Calorimeter using an electron beam
复制标题
使用电子束测量 GlueX 正向热量计的能量和时间分辨率
DOI：
10.1016/j.nima.2013.05.109
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发表时间：
2013
影响因子：
1.4
通讯作者：
H. Egiyan
中科院分区：
文献类型：
--
作者：
K. Moriya;J. Leckey;M. Shepherd;K. Bauer;D. Bennett;J. Frye;J. González;S. Henderson;D. Lawrence;R. Mitchell;E. Smith;Paul Smith;A. Somov;H. Egiyan
使用小型探测器和来自杰斐逊实验室霍尔B示踪器的可变能量电子束，研究了GSTX前向量热计的性能。对于110 MeV至260 MeV的电子能量，这是接近设计灵敏度的下限，测量的分数能量分辨率的范围从20%至14%，这满足设计目标。使用定制的250 MHz闪存ADC进行读出，可以精确测量信号到达时间。该探测器实现了0.38 ns的时间分辨率为一个单一的100 mV脉冲，这将允许定时歧视的光子束聚束和超时背景期间的GREX探测器的操作。
The performance of the GlueX Forward Calorimeter was studied using a small version of the detector and a variable energy electron beam derived from the Hall B tagger at Jefferson Lab. For electron energies from 110 MeV to 260 MeV, which are near the lower-limits of the design sensitivity, the fractional energy resolution was measured to range from 20% to 14%, which meets the design goals. The use of custom 250 MHz flash ADCs for readout allowed precise measurements of signal arrival times. The detector achieved timing resolutions of 0.38 ns for a single 100 mV pulse, which will allow timing discrimination of photon beam bunches and out-of-time background during the operation of the GlueX detector.