Recent progress with microchannel-plate PMTs
Recent progress with microchannel-plate PMTs
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DOI：
10.1016/j.nima.2019.01.047
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发表时间：
2020-02
影响因子：
1.4
通讯作者：
A. Lehmann;M. Böhm;D. Miehling;M. Pfaffinger;S. Stelter;F. Uhlig;A. Ali;A. Belias;R. Dzhygadlo;A. Gerhardt;M. Krebs;D. Lehmann;K. Peters;G. Schepers;C. Schwarz;J. Schwiening;M. Traxler;L. Schmitt;M. Düren;E. Etzelmüller;K. Föhl;A. Hayrapetyan;K. Kreutzfeld;J. Rieke;M. Schmidt;T. Wasem;C. Sfienti
中科院分区：
文献类型：
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作者：
A. Lehmann;M. Böhm;D. Miehling;M. Pfaffinger;S. Stelter;F. Uhlig;A. Ali;A. Belias;R. Dzhygadlo;A. Gerhardt;M. Krebs;D. Lehmann;K. Peters;G. Schepers;C. Schwarz;J. Schwiening;M. Traxler;L. Schmitt;M. Düren;E. Etzelmüller;K. Föhl;A. Hayrapetyan;K. Kreutzfeld;J. Rieke;M. Schmidt;T. Wasem;C. Sfienti
微通道板PMT被确定为唯一合适的光子传感器，用于P̄ANDA实验的两个DIRC探测器。由于MCP-PMTs长期存在的老化问题最近被用原子层沉积(ALD)技术包覆在MCP-PMTs孔上来克服，因此进一步改进了2“MCP-PMTs。最好的Photonis器件已经达到了>；20C/cm2集成阳极充电的寿命，没有任何老化迹象。此外，滨松公司新开发的2英寸MCP-PMT正在成熟，可以在高速率环境中使用。介绍了我们的长期寿命测量的现状和目前最先进的来自Photonis和Hamamatsu的ALD涂层MCP-PMT的性能参数。此外，还讨论了一种新的MCP-PMT质量保证体系所获得的初步结果。该装置由一个高性能的数据采集系统组成，可以同时测量≥阳极像素的响应。该系统允许研究和量化背景参数，如位置相关的暗计数速率和离子后脉冲，以及反冲电子的时间和空间分布，以及阳极像素之间的电子和电荷共享串扰的影响。
Microchannel-plate (MCP) PMTs were identified as the only suitable photon sensors for the two DIRC detectors of the P̄ANDA experiment at FAIR. As the long-standing aging problem of MCP-PMTs was recently overcome by coating the MCP pores with an atomic layer deposition (ALD) technique, further improved 2 ″MCP-PMTs were investigated. The best PHOTONIS device has reached a lifetime of> 20 C/cm 2 integrated anode charge without any sign of aging. Also the newly developed 2 ″MCP-PMTs of Hamamatsu are maturing and are usable in high rate environments. The status of our long-term lifetime measurements and the performance parameters of the currently most advanced ALD-coated MCP-PMTs from PHOTONIS and Hamamatsu are presented. In addition, first results obtained with a new quality assurance setup for MCP-PMTs are discussed. This setup consists of a high performance DAQ system to measure the response of≥ 64 anode pixels simultaneously. The system allows to study and quantify background parameters like position dependent dark count rates and ion afterpulsing as well as temporal and spacial distributions of recoil electrons and the effects of electronic and charge-sharing crosstalk among the anode pixels.