用于高能X光测量的Si-PIN阵列探测器
Si PIN detectors array for high energy X-ray measurement
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摘要: 设计了用于高能X光测量的小面积PIN硅光电二极管线列探测器，通过理论计算和EGSnrc蒙卡软件模拟分析了Si-PIN的探测灵敏度、线性电流和时间响应。根据理论研究可知，该探测器适用于大注量率、高能轫致辐射光的空间分辨力（3 mm）和时间分辨力（8 ns）的测量。并在理论设计的基础上进行了部分实验，采用小面积PIN硅光电二极管和放大电路，在“神龙一号”直线感应加速器上进行高能X光的测量,初步得到了PIN硅光电单元的响应结果，为线列小面积PIN光电管阵列的实用设计提供优化基础。
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关键词:
- 阵列探测器 /
- 高能X光 /
- 灵敏度 /
- 时空分辨直线感应加速器
Abstract: One-dimensional little-area Si PIN detectors array for high energy X-ray measurement was developed. The sensitivity, linear output current and time response of the Si PIN were calculated theoretically and also simulated using MC software EGSnrc. According to the theoretical study, little-area Si PIN detectors array can be used to detect high intensity and high energy X-ray with better spatio-temporal resolution(3 mm-8 ns). Primary experiments were carried out based on the theoretical design on “Dragon-Ⅰ” linear induction electron accelerator using the Si-PIN photoelectric cell and the corresponding amplifier. Rreasonable response of Si-PIN photoelectric cell was gained for optimum design of practical one-dimensional little-area Si PIN detectors array. -
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