Simulation of the electron collection efficiency of a PMT based on the MCP coated with high secondary yield material
Simulation of the electron collection efficiency of a PMT based on the MCP coated with high secondary yield material
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DOI：
10.1016/j.nima.2016.08.034
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发表时间：
2016-11-01
影响因子：
1.4
通讯作者：
Hui, Dandan
中科院分区：
文献类型：
--
作者：
Chen, Lin;Tian, Jinshou;Hui, Dandan
由于传统微通道板（MCP）输入电极处的光电子损失严重，基于MCP的光电倍增管（MCP- pmt）的光电子收集效率（CE）在MCP开区分数附近波动，无法取得突破。提出了在MCP上沉积高二次电子产率材料薄膜作为提高CE的有效途径。然而，可用的模拟和实验数据来验证它是稀疏的。在我们的工作中，我们在CST Studio Suite中开发了一个三维小面积MCP模型，分别评估了基于传统MCP和涂层MCP的pmt的收集效率。结果表明，基于MCP涂层的PMT的CE显著提高，且均匀性更好，有望达到100%。(C) 2016 Elsevier B.V.版权所有
Owning to the serious loss of photoelectrons striking at the input electrode of traditional microchannel plate (MCP), photoelectron collection efficiency (CE) of photomultiplier tubes based on MCP (MCP-PMTs) fluctuates around the MCP open area fraction and cannot make a breakthrough. Depositing a thin film of high secondary electron yield material on the MCP is proposed as an effective approach to improve the CE. The available simulation and experimental data to validate it, however, is sparse. In our work, a three-dimensional small area MCP model is developed in CST Studio Suite to evaluate the collection efficiencies of PMTs based on the traditional MCP and the coated one, respectively. Results predict that CE of the PMT based on the coated MCP has a significant increase and a better uniformity, which is expected to reach 100%. (C) 2016 Elsevier B.V. All rights reserved.