研制了用于脉冲星导航的x射线光子计数探测器原理样机,该探测器主要由对x射线灵敏度较高的CsI光电阴极、微通道板电子倍增器和收集阳极组成.对X射线光子计数探测器灵敏度、时间分辨率和整个系统的死时间进行了测试,实验结果表明该探测器的灵敏度在5 keV时可达5.2×10~3 A/W,时间分辨率可达到1.1 ns,系统整体的死时问为100 ns.
【英文摘要】
A prototype of x-ray photon counting detector is proposed for x-ray pulsar navigation.The detector consists of Csl photocathode, micro-channel plate(MCP) electron multiplier,collect anode and electronic readout.The sensitivity,the temporal resolution,and the dead time are tested,and the results show that the sensitivity of the detector is 5.2×10~3 AAV at 5 keV,the temporal resolution is 1.1 ns,and dead time is 100 ns.
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