Performance studies of microchannel plate PMTs in high magnetic fields
Performance studies of microchannel plate PMTs in high magnetic fields
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DOI：
10.1016/j.nima.2008.07.083
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发表时间：
2008-09-21
影响因子：
1.4
通讯作者：
Sfienti, C.
中科院分区：
文献类型：
--
作者：
Lehmann, A.;Britting, A.;Sfienti, C.
微通道板(MCP)光电倍增管(PMT)是熊猫DIRC中极具吸引力的光子传感器。研究了不同类型的MCP-PMT的增益和时间分辨率随磁场和磁场取向的变化关系。研究发现，在大熊猫的2T磁场中，有效的单光子探测需要10 pm或更小的孔径。当孔径为6微米时，增益和时间分辨率都最好。与增益相反，时间分辨率仅表现出对磁场及其取向的微弱依赖。在不加磁场的情况下，单光子的最佳渡越时间分辨率约为20ps。(C)2008爱思唯尔B.V.保留所有权利。
Microchannel plate (MCP) photomultipliers (PMTs) are attractive photon sensors for the PANDA DIRC. The gain and the time resolution of different types of MCP-PMTs were studied as a function of the magnetic field and of the field orientation. It was found that for an efficient single photon detection a pore diameter of 10 pm or less will be needed in the 2 T magnetic field of PANDA. Both gain and time resolution are best with a pore size of 6 mu m. In contrast to the gain the time resolution shows only a weak dependence on the magnetic field and its orientation. The best transit time resolution for single photons was evaluated to be sigma approximate to 20ps with no magnetic field applied. (C) 2008 Elsevier B.V. All rights reserved.