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High-performance microchannel plate imaging photon counters for spaceborne sensing

机译:用于星载传感的高性能微通道板成像光子计数器

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The unique ability to record photon X,Y,T high fidelity information has advantages for high speed recording devices for some important time dependent applications. For microchannel plate sensors our most commonly used readout configuration is the cross delay line anode. We have achieved resolutions of < 25 μm in tests over 65 mm x 65 mm (> 2.5k x 2.5k resolution elements) with excellent linearity for random photon rates of > 500 kHz, while time tagging events using the MCP output signal to better than 100 ps. Open face and sealed tube microchannel plate cross delay line detectors of this kind have been built and used for observation of flare stars, orbital satellites and space debris with the GALEX satellite, time resolved imaging of the Crab Pulsar with a telescope as small as 1m, biological fluorescence imaging and synchrotron diagnostics. To achieve better efficiency, higher counting rate and extended lifetime we are now developing cross strip anode readouts. These have already demonstrated 5 μm resolution at <10 x lower gain than the cross delay line schemes, and high speed electronics for the cross strip are currently in development.
机译:记录光子X,Y,T高保真度信息的独特功能对于某些重要的时间相关应用的高速记录设备具有优势。对于微通道板传感器,我们最常用的读数配置是交叉延迟线阳极。在65 mm x 65 mm(> 2.5kx 2.5k分辨率的元件)上进行的测试中,我们实现了<25μm的分辨率,并具有出色的线性度,适用于> 500 kHz的随机光子速率,同时使用MCP输出信号的时间标记事件优于100 ps。这类敞开式和密封管式微通道板交叉延迟线探测器已经制造出来,并用于用GALEX卫星观测火星,轨道卫星和空间碎片,用小至1m的望远镜对蟹状脉冲星进行时间分辨成像,生物荧光成像和同步加速器诊断。为了获得更高的效率,更高的计数率和更长的使用寿命,我们现在正在开发交叉带状阳极读数器。这些已经证明了5μm的分辨率,增益小于交叉延迟线方案的10倍,并且交叉带的高速电子设备目前正在开发中。

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