论文标题
基于MCP的光电探测器的亚毫米空间分辨率的分段阳极
Segmented Anodes with Sub-millimeter Spatial Resolution for MCP-Based Photodetectors
论文作者
论文摘要
基于微通道板的光探测器在能够覆盖许多平方米的区域的同时提供次毫米空间分辨率，带电粒子的时间分辨率少于10 picsecond，单个光子的30-50 psec的时间分辨率。合并电容耦合的阳极允许使用针对占用，费率和时间/空间分辨率进行优化的外部拾取电极。信号拾取天线可以作为印刷电路卡实现，其模式可以符合特定的应用需求。电极元件通常是用于高占用率/高速应用应用的二维板阵列，或用于低占用率/低率的一维带和较低通道数的条带。在这里，我们提出垫图案，以增强垫之间的电荷共享，以显着降低所需的通道计数/面积，同时为带电颗粒保持100至200微米的空间分辨率，单个光子为400微米至1 mm。在电容耦合的印刷电路拾取板中使用多个信号层的模式可以进一步降低通道计数，从而将板块数量的缩放行为与总面积从二次到线性移动。
Micro-channel-plate-based photo-detectors are unique in being capable of covering areas of many square-meters while providing sub-millimeter space resolution, time resolutions of less than 10 picoseconds for charged particles, time resolutions of 30-50 psec for single photons. Incorporating a capacitively-coupled anode allows for the use of external pickup electrodes optimized for occupancy, rate, and time/space resolution. The signal pickup antenna can be implemented as a printed circuit card with a pattern chosen to match the specific application needs. The electrode elements are typically either a 2-dimensional array of pads for high-occupancy/high-rate applications, or a 1-dimensional array of strips for low-occupancy/low-rate, and a lower channel count. Here we present pad patterns that enhance charge-sharing between pads to significantly lower the required channel count/area while maintaining spatial resolutions of 100 to 200 microns for charged particles and 400 microns to 1 mm for single photons. Patterns that use multiple signal layers in the capacitively-coupled printed circuit signal pickup board can lower the channel count even further, moving the scaling behavior in the number of pads versus total area from quadratic to linear.
