| 基于Spartan-6的微结构探测器APV25数字化系统设计 |
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| 引用本文： | 李兴隆,胡守扬,周静,智宇,陈雷,刘雯迪,赵明锐,李沛玉,李笑梅.基于Spartan-6的微结构探测器APV25数字化系统设计[J].航天器环境工程,2018,35(2):200-204. |
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| 作者姓名： | 李兴隆 胡守扬 周静 智宇 陈雷 刘雯迪 赵明锐 李沛玉 李笑梅 |
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| 作者单位： | 中国原子能科学研究院 核数据重点实验室, 北京 102413,中国原子能科学研究院 核数据重点实验室, 北京 102413,中国原子能科学研究院 核数据重点实验室, 北京 102413,中国原子能科学研究院 核数据重点实验室, 北京 102413,中国原子能科学研究院 核数据重点实验室, 北京 102413,中国原子能科学研究院 核数据重点实验室, 北京 102413,中国原子能科学研究院 核数据重点实验室, 北京 102413,中国原子能科学研究院 核数据重点实验室, 北京 102413,中国原子能科学研究院 核数据重点实验室, 北京 102413;中国科学技术大学 核探测与核电子学国家重点实验室, 合肥 230026 |
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| 基金项目： | 国家重点研发计划项目（编号：2016YFE0100900，2016YFA0400300）；国家自然科学基金项目（编号：11775313）；核探测与核电子学国家重点实验室开放课题基金项目 |
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| 摘 要： | 为满足微结构气体探测器多通道信号高速读出的需求,文章基于现场可编程门阵列(FPGA)Spartan-6设计了128通道前置放大芯片APV25的数字化系统。该系统中,APV25输出的串行模拟信号经模/数转换芯片ADS5242进行模/数转换,由Spartan-6接收、解串、缓冲和打包后,经千兆以太网传送至计算机进行存储和分析。经测试,该系统可实现APV25的最大采样速率280 k Hz,基线噪声低至716 e-。输入电荷量低于75 000 e-时,电荷响应线性良好。由于APV25的抗辐射特性,该系统有望用于空间多通道辐射探测系统。
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| 关 键 词： | APV25芯片 Spartan-6 数字化系统 千兆以太网 硬件设计 |
| 收稿时间： | 2017/12/12 0:00:00 |
| 修稿时间： | 2018/4/1 0:00:00 |
Design of APV25 digitization system for MPGD based on Spartan-6 |
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| LI Xinglong,HU Shouyang,ZHOU Jing,ZHI Yu,CHEN Lei,LIU Wendi,ZHAO Mingrui,LI Peiyu and LI Xiaomei.Design of APV25 digitization system for MPGD based on Spartan-6[J].Spacecraft Environment Engineering,2018,35(2):200-204. |
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| Authors: | LI Xinglong HU Shouyang ZHOU Jing ZHI Yu CHEN Lei LIU Wendi ZHAO Mingrui LI Peiyu and LI Xiaomei |
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| Institution: | Science and Technology on Nuclear Data Laboratory, China Institute of Atomic Energy, Beijing 102413, China,Science and Technology on Nuclear Data Laboratory, China Institute of Atomic Energy, Beijing 102413, China,Science and Technology on Nuclear Data Laboratory, China Institute of Atomic Energy, Beijing 102413, China,Science and Technology on Nuclear Data Laboratory, China Institute of Atomic Energy, Beijing 102413, China,Science and Technology on Nuclear Data Laboratory, China Institute of Atomic Energy, Beijing 102413, China,Science and Technology on Nuclear Data Laboratory, China Institute of Atomic Energy, Beijing 102413, China,Science and Technology on Nuclear Data Laboratory, China Institute of Atomic Energy, Beijing 102413, China,Science and Technology on Nuclear Data Laboratory, China Institute of Atomic Energy, Beijing 102413, China and Science and Technology on Nuclear Data Laboratory, China Institute of Atomic Energy, Beijing 102413, China;State Key Lab of Particle Detection and Electronics, University of Science and Technology of China, Hefei 230026, China |
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| Abstract: | To meet the demand of high-speed readout of multi-channel signals from micro pattern gas detectors, a digitization system is designed for the 128-channel preamplifier chip APV25 based on the field programmable gate array (FPGA) Spartan-6. In this system, the serial analog signal output by the APV25 is digitized by the analog-to-digital conversion (ADC) chip ADS5242. After the serial-to-parallel conversion by the Spartan-6, the data are acquired, buffered and packaged to the user datagram, and then sent to the computer via the gigabit ethernet for storage and analysis. In the test, the system reaches a maximum sampling rate of 280 kHz for the APV25, and the pedestal noise is as low as 716 electrons. The linearity of the charge response is good when the input amount of charge is less than 75 000 electrons. This system is expected to be used in the multi-channel radiation detection system in space thanks to the radiation tolerance of the APV25. |
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| Keywords: | APV25 chip Spartan-6 digitization system gigabit ethernet hardware design |
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