12-23 October 2020
GMT timezone

Preliminary Design of a FADC Readout System for the Alpha/Beta Discrimination in a Large Area Plastic Scintillation Detector

14 Oct 2020, 16:42
Mini Oral and Poster Poster session C-01


WEN, Jingjun (Tsinghua University)


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.

Primary author

WEN, Jingjun (Tsinghua University)


Dr DOU, Daowei (Department of Engineering Physics, Tsinghua University) ZHU, Jinfu Prof. ZENG, Zhi (Department of Engineering Physics, Tsinghua University) XUE, Tao (Tsinghua University) Prof. LI, Jianmin Prof. LI, Junli (Department of Engineering Physics, Tsinghua University) LIU, Yinong

Presentation materials