Investigating microchannel plate PMTs with TOFPET2 multichannel picosecond timing electronics
Investigating microchannel plate PMTs with TOFPET2 multichannel picosecond timing electronics
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使用 TOFPET2 多通道皮秒计时电子器件研究微通道板 PMT
DOI：
10.1016/j.nima.2019.162758
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发表时间：
2020
期刊：
影响因子：
--
通讯作者：
Lapington J
中科院分区：
文献类型：
--
作者：
Lapington J
TOFPET 2是葡萄牙PETsys Electronics SA公司生产的高性能多通道皮秒定时读出电子ASIC的第二代设计。最初开发的飞行时间正电子发射断层扫描使用硅光电倍增管，在这项工作中，我们描述了一个实验方案，以评估像素化微通道板（MCP）光电倍增管（PMT）探测器的TOFPET 2的性能。使用各种信号输入方法进行研究;注入电子刺激信号、SiPM光电探测器、单阳极MCP光电倍增管探测器，最后使用16 x 16像素化多层陶瓷读出的可拆卸多阳极MCP探测器进行成像。该探测器利用有源阳极加镜像电荷配置来提供电子设备所需的正信号脉冲。使用在单光子计数模式下操作的PETsys飞行时间ASIC评估试剂盒（mark 2）进行测量。我们目前的时间分辨率，跨通道符合时间分辨率和能量分辨率使用内部脉冲幅度测量和时间超过阈值信号路径的性能结果。使用40 ps宽的脉冲激光器评价光电探测器的定时性能，该脉冲激光器使用黑暗外壳内的温度稳定设置在单光子水平下操作。使用来自TOFPET 2系统的内置超阈值时间输出应用振幅游走校正。单光子时间分辨率优于110 FWHM。使用像素化阳极的相邻像素上的信号传播获得的初步结果产生了1.87 ps rms的重合定时分辨率。
TOFPET2 is the second-generation design of a high-performance multichannel picosecond timing readout electronics ASIC produced by PETsys Electronics SA, Portugal. Originally developed for time-of-flight positron emission tomography using silicon photomultipliers, in this work we describe an experimental programme to evaluate the performance of TOFPET2 with pixelated microchannel plate (MCP) photomultiplier tube (PMT) detectors. Investigations were performed using various signal input methods; injected electronic stim signals, SiPM photodetectors, a single anode MCP photomultiplier detector and finally imaging with a demountable multi-anode MCP detector using a 16 x 16 pixelated multi-layer ceramic readout. The detector utilised an active anode plus image charge configuration to provide the positive signal pulses required by the electronics. Measurements were undertaken using the PETsys Time-of-Flight ASIC evaluation kit (mark2) operating in single photon counting mode. We present performance results for time resolution, cross channel coincidence time resolution and energy resolution using internal pulse amplitude measurement and time-over-threshold signal paths. Photodetector timing performance was evaluated using a 40 ps wide pulsed laser, operating at single photon level using a temperature stabilised setup within a dark enclosure. Amplitude walk correction was applied using the in-built time-over-threshold output from the TOFPET2 system. Single photon timing resolution of better than 110 FWHM was demonstrated. Preliminary results obtained using signal spread over adjacent pixels of a pixellated anode yield a coincidence timing resolution of∼ 87 ps rms.
DOI：
10.1016/s0168-9002(01)01843-5
发表时间：
2002-01-21
影响因子：
1.4
作者：
Jagutzki, O;Lapington, JS;Schmidt-Böcking, H
通讯作者：
Schmidt-Böcking, H