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Cross Strip MicroChannel Plate Imaging Photon Counters with High Time Resolution

机译:具有高时间分辨率的交叉带微通道板成像光子计数器

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We have implemented cross strip readout microchannel plate detectors in 18 mm active area format including open face (UV/particle) and sealed tube (optical) configurations. These have been tested with a field programmable gate array based parallel channel electronics for event encoding which can process high input event rates (> 5 MHz) with high spatial resolution. Using small pore MCPs (6 μm) operated in a pair, we achieve gains of >5 × 10~5 which is sufficient to provide spatial resolution of <35 μm FHWM, with self triggered event timing accuracy of ~2 ns for sealed tube optical sensors. A peak quantum efficiency of ~19% at 500 nm has been achieved with SuperGenll photocathodes that have response over the 400 nm to 900 nm range. Local area counting rates of up to >200 events/mcp pore sec~(-1) have been attained, along with image linearity and stability to better than 50 μm.
机译:我们已经以18毫米有效面积格式实现了交叉带读出微通道板检测器,包括开放面(UV /颗粒)和密封管(光学)配置。这些已通过基于现场可编程门阵列的并行通道电子设备进行了事件编码测试,该事件编码可以处理具有高空间分辨率的高输入事件率(> 5 MHz)。使用成对工作的小孔MCP(6μm),我们获得的增益> 5×10〜5,足以提供<35μmFHWM的空间分辨率,对于密封管光学器件,自触发事件定时精度为〜2 ns传感器。 SuperGenll光电阴极在400 nm至900 nm范围内具有响应,在500 nm处达到了约19%的峰值量子效率。局部计数率高达> 200事件/ mcp孔sec〜(-1),图像线性度和稳定性均优于50μm。

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