基于金刚石探测器的低噪声高增益电荷灵敏放大器研制  

Development of Low⁃Noise High⁃Gain Charge⁃Sensitive Amplifier Based on Diamond Detector

作　　者：王民川 朱志甫 黄河[3] 邹继军[3] 邢宗强 方波 陈少佳[4] WANG Minchuan;ZHU Zhifu;HUANG He;ZOU Jijun;XING Zongqiang;FANG Bo;CHEN Shaojia(School of Information Engineering,Zhengzhou University of Engineering and Technology,Zhengzhou,450044,Henan,China;School of Electronic and Information Engineering,Guangdong University of Petrochemical Technology,Maoming,525000,Guangdong,China;School of Mechanical and Electronic Engineering,East China University of Science and Technology,Nanchang,330013,Jiangxi,China;Institute of High Energy Physics,Chinese Academy of Sciences,Beijing,100049,China)

机构地区：[1]郑州工程技术学院信息工程学院,河南郑州450044 [2]广东石油化工学院电子信息工程学院,广东茂名525000 [3]东华理工大学机械与电子工程学院,江西南昌330013 [4]中国科学院高能物理研究所,北京100049

出　　处：《核电子学与探测技术》2025年第3期388-396,共9页Nuclear Electronics & Detection Technology

基　　金：国家自然科学基金:项目(61964001,62211530107,12275049);河南省科技攻关项目(242102520013);河南省重点研发项目(231111210400);广东省自然科学基金:(2025A1515012835);河南省软科学研究计划项目(252400411254)。

摘　　要：金刚石探测器在核辐射探测中具有广阔的应用。本文基于电荷灵敏放大器的基本原理,采用共源极放大器和差分放大器的组合方式,设计了一种基于金刚石探测器的低噪声高增益电荷灵敏放大器。实验结果显示,本底等效噪声电荷为168 e^(-),能谱分辨率和电荷收集效率分别为2.63%和86%。所有指标均达到了设计要求。该放大器有望在金刚石探测器的能谱分析、位置分辨和束流监测等领域得到应用。Diamond detectors have a wide range of applications in nuclear radiation detection.This paper presents the design of a low⁃noise and high⁃gain charge⁃sensitive amplifier based on diamond detectors,utilizing the fundamental principles of charge⁃sensitive amplifiers.A combination of common⁃source amplifiers and differential amplifiers is employed,optimizing the load resistance and field⁃effect transistors.Experimental results indicate that baseline equivalent noise charge is 168 e^(-),with energy resolution and charge collection efficiency measured at 2.63%and 86%,respectively.All parameters meet the design requirements.This amplifier is expected to find applications in energy spectrum analysis,position resolution,and beam monitoring using diamond detectors.

关 键 词：金刚石 低噪声 高增益 电荷灵敏放大器 

分 类 号：TL817[核科学技术—核技术及应用]