混合像素传感器阵列外围拥塞缓解读出电路设计  

Congestion Mitigation Circuits for Peripheral Readout of Hybrid Pixel Sensors

作　　者：张浩楠 魏晓敏[1] 蔡耀 王佳[1] 郑然[1] 薛菲菲[1] 胡永才[1] ZHANG Haonan;WEI Xiaomin;CAI Yao;WANG Jia;ZHENG Ran;XUE Feifei;HU Yongcai(School of Computer Science and Engineering,Northwestern Polytechnical University,Xi'an 710129,China)

机构地区：[1]西北工业大学计算机学院,西安710129

出　　处：《核电子学与探测技术》2023年第4期698-706,共9页Nuclear Electronics & Detection Technology

摘　　要：介绍了一种混合像素传感器的外围数字读出电路,适用于高能粒子探测、生物医学成像等领域。该外围读出电路由拥塞缓解电路、持续仲裁电路与循环仲裁电路组成。分析了粒子集群的特征和不同数据路由策略对电路的影响,采用间隔n列通道共享存储器与持续/循环仲裁两种策略,缓解瞬时大量粒子击中时的信息损失问题。仿真结果表明,拥塞缓解电路较传统电路在200 kHz对撞频率下,数据读出能力提升43%,当传感器阵列击中比例达3%时,粒子信息损失减少23.43%。采用0.13μm CMOS工艺,64通道拥塞缓解外围数字电路的面积为219664μm^(2),对比未经拥塞缓解处理电路,数字外围电路面积减小13.26%。A design of peripheral digital readout circuits for a hybrid pixel sensor is presented,which is suitable for high-energy particle detection,biomedical imaging and other fields.The peripheral readout circuits consist of congestion mitigation circuits,continuous arbitration circuits and cyclic arbitration circuits.Effects of the circuits with different particle cluster characteristics and different data routing strategies were analyzed.The strategies of channel sharing memory spaced by n columns and continuous/loop arbitration circuit were used to alleviate the particle information loss when particles hit the sensors with heavy flux.The simulation results show that compared with the traditional circuits,the congestion mitigation circuits can improve the data readout ability by 43%at the collision frequency of 200 kHz.When the hit density reaches 3%,the particle information loss is reduced by 23.43%.Using a 0.13μm CMOS process,the area of the 64-channel congestion mitigation peripheral digital circuits is 219664μm^(2).Compared with the circuits without congestion mitigation processing,the area of the digital peripheral circuits is reduced by 13.26%.

关 键 词：粒子探测 外围数字读出电路 资源共享 拥塞缓解 数字集成电路 

分 类 号：O57[理学—粒子物理与原子核物理]