论文标题
在大面积塑料闪烁探测器的Alpha/beta区分的FADC读数系统的初步设计
Preliminary Design of a FADC Readout System for the Alpha/Beta Discrimination in a Large Area Plastic Scintillation Detector
论文作者
论文摘要
本文介绍了一种为自来水$α/β$剂量监测系统开发的FADC读数系统，该系统基于EJ444 Phoswich闪烁检测器和波长移动纤维读数。读取系统包含双重采样通道，可以提供最高1 GSP，14位垂直分辨率和足够有效数量的钻头（在10 MHz时为9.7位）的采样率，这对于歧视Alpha/beta信号之间的最小差异是最佳的。此外，该系统基于Zynq SoC，该SOC提供高数据吞吐量，低延迟和出色的灵活性。至于歧视算法，一种简单的最小二乘分类方法用于区分$α/β$信号并显示高歧视能力。此外，本文还简要介绍了前端电子设备和高压电源模块。
This paper describes a FADC Readout system developed for the tap water $α/β$ dose monitoring system which is based on EJ444 phoswich scintillation detector and wavelength shifting fiber readout. The Readout system contains dual sampling channels that can supply sampling rate up to 1 GSPS, 14-Bit vertical resolution and adequate effective number of bits (9.7 Bits at 10 MHz), which is optimum for the discrimination of the minimal difference between alpha/beta signals. Moreover, the system is based on a ZYNQ SoC which provides high data throughput speed, low latency and excellent flexibility. As for the discrimination algorithms, a simple least-square classification method is used to discriminate the $α/β$ signals and shows high discrimination capability. Besides, the front-end electronics and high voltage supply modules are also briefly introduced in the paper.
