GEM探测器多通道前端读出ASIC设计  

Design of Multi-channel Front-end Readout ASIC for GEM Detectors

作　　者：马毅超[1] 姚旭腾 曾莉欣 朱林 MA Yichao;YAO Xuteng;ZENG Lixin;ZHU Lin(Shaanxi University of Science&Technology,Xi'an 710021,China;Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China;Dongguan Neutron Science Center,Dongguan 523803,China)

机构地区：[1]陕西科技大学,西安710021 [2]中国科学院高能物理研究所,北京100049 [3]散裂中子源科学中心,东莞523803

出　　处：《核电子学与探测技术》2023年第5期1105-1112,共8页Nuclear Electronics & Detection Technology

基　　金：国重仪项目(12227810)资助。

摘　　要：为满足高效率、高分辨率、高通量二维位置灵敏中子探测器的需求,设计了基于GF 0.18μm工艺的32通道GEM探测器前端读出ASIC数模混合芯片。针对GEM探测器输出的信号特点,设计了灵敏电荷放大电路、成形电路、甄别器电路等模拟电路以及刻度信号配置电路、译码器电路等数字电路。测试结果表明:ASIC最高计数率可达10^(7)s^(-1),前放电路具有较好的积分线性度。In order to meet the demand of high efficiency,high resolution and high flux two-dimensional position sensitive neutron detector,a 32-channel GEM detector front-end readout ASIC hybrid chip based on GF 0.18μm process is designed.According to the signal characteristics of GEM detector output,the analog circuits such as sensitive charge amplifier circuit,forming circuit,discriminator circuit and digital circuits such as scale signal configuration circuit and decoder circuit are designed.The test results show that the highest count rate of ASIC can reach 10^(7)s^(-1),and the front amplifier circuit has good integral linearity.

关 键 词：GEM探测器 ASIC设计 电荷灵敏前放 准高斯成形 

分 类 号：TL81[核科学技术—核技术及应用]