Nupix-H2-单片有源像素探测器电路设计  

Design of Nupix-H2-Monolithic Active Pixel Detector Circuit

作　　者：尹锐 何芮 黄菊 袁红 赵承心 YIN Rui;HE Rui;HUANG Ju;YUAN Hong;ZHAO Chengxin(Institute of Modern Physics,Chinese Academy of Sciences,Lanzhou 730000,China;Institute of Nuclear Science and Technology,University of Chinese Academy of Sciences,Beijing 100000,China)

机构地区：[1]中国科学院近代物理研究所,兰州730000 [2]中国科学院大学核科学与技术学院,北京100000

出　　处：《原子核物理评论》2024年第4期1008-1015,共8页Nuclear Physics Review

基　　金：国家自然科学基金资助项目(12222512,U2032209)。

摘　　要：在核物理和粒子物理实验中,单片有源像素传感器(MAPS)广泛应用于顶点和径迹探测器。为了验证强流重离子加速器装置(HIAF)上物理实验对MAPS提出的同时具备位置、时间、能量的多维度测量需求,本工作设计了一款名为Nupix-H2-的原型单片有源像素传感器。该原型芯片采用国产130 nm CMOS四阱高阻工艺,像素阵列大小为1行×16列,单个像素面积为22μm×22μm,采用Rolling Shutter的读出方式进行扫描,按列依次输出每个像素单元的信息,扫描频率为40 MHz。每个像素中采用电荷灵敏放大器测量能量信息,16个像素通过一组计数器完成时间测量。仿真结果表明,该像素阵列的等效噪声电荷(ENC)小于30 e^(-),能量输出积分非线性(INL)最大约为5%,时间分辨率达到25 ns。In nuclear and particle physics experiments,Monolithic Active Pixel Sensors(MAPS)are widely used in vertex and track detectors.To verify the multi-dimensional measurement requirements for MAPS in physics experiments on the High Intensity heavy-ion Accelerator Facility(HIAF),this paper designs a prototype MAPS named Nupix-H2-that can simultaneously measure the position,time,and energy.This prototype chip adopts the domestic 130 nm CMOS quad-well high-resistivity process.This chip has 1 row×16 columns pixels,and the area of a single pixel is 22μm×22μm.It uses the rolling shutter readout method to scan and read out each pixel's information at the frequency of 40 MHz.In each pixel,a charge-sensitive amplifier is used to measure energy information,and 16 pixels complete time measurement through a set of counters.The simulation results show that this pixel array's Equivalent Noise Charge(ENC)is less than 30 e-,the maximum Integral Non-Linearity(INL)of energy measurement is approximately 5%,and the time resolution reaches 25 ns.

关 键 词：像素探测器 CMOS像素电路 MAPS 粒子物理学 

分 类 号：TN710[电子电信—电路与系统] TL56[核科学技术—核技术及应用]