Development of an enhanced online tritium monitoring system using plastic scintillation fiber array  

作　　者：Wen-Yu Cheng Ke Deng You-Shi Zeng Wei Liu Qin Zhang 

机构地区：[1]Shanghai Institute of Applied Physics,Chinese Academy of Sciences,Shanghai 201800,China [2]University of Chinese Academy of Sciences,Beijing 100049,China

出　　处：《Nuclear Science and Techniques》2024年第10期239-249,共11页核技术（英文）

基　　金：supported by the Young Potential Program of the Shanghai Institute of Applied Physics,Chinese Academy of Sciences,Shanghai Rising-Star Program,China(No.22YF1457800);the Chinese Academy of Sciences Youth Education Fund Program(No.E2292502);Gansu Major Scientific and Technological Special Project(No.23ZDGH001)。

摘　　要：Tritium,a radioactive nuclide discharged by nuclear power plants,poses challenges for removal.Continuous online monitoring of tritium in water is crucial for real-time radiation data,given its predominant existence in the environment as water.This paper presents the design,simulation,and development of a tritium monitoring device utilizing a plastic scintillation fiber(PSF)array.Experimental validation confirmed the device’s detection efficiency and minimum detectable activity.The recorded detection efficiency of the device is 1.6×10^(-3),which exceeds the theoretically simulated value of 4×10^(-4)by four times.Without shielding,the device can achieve a minimum detectable activity of 3165 Bq L^(-1)over a 1600-second measurement duration.According to simulation and experimental results,enhancing detection efficiency is possible by increasing the number and length of PSFs and implementing rigorous shielding measures.Additionally,reducing the diameter of PSFs can also improve detection efficiency.The minimum detectable activity of the device can be further reduced using the aforementioned methods.

关 键 词：Tritium Plastic scintillating fiber array DETECTOR 

分 类 号：TM623[电气工程—电力系统及自动化] TP274[自动化与计算机技术—检测技术与自动化装置]