SoC Data Readout Method for CBM-TOF Super Module Quality Evaluation
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摘要: 在高压缩重子物质(Compressed Baryonic Matter,CBM)实验中,多气隙电阻板室(Multi-gap Resistive Plate Chamber,MRPC)探测器被用于构建飞行时间(Time of Flight,TOF)谱仪。根据CBM实验需求,TOF谱仪被设计成由6种不同类型的超级模块构成的探测器墙。每个模块最多包含5块MRPC探测器,能提供320路电子学通道,单个模块的数据率高达6 Gbps。为了评估CBM-TOF超级模块的性能,本文提出了一种基于TCP/IP千兆以太网技术的数据读出方法。考虑到TCP/IP协议的复杂性,该方法利用AlteraSoC FPGA从前端电子学接受数字化的时间数据,并通过千兆以太网并行地发送数据到DAQ软件。实验室测试结果表明,单个读出扣板全链路读出速率达到550 Mbps,能够用于CBM-TOF MRPC探测器质量评估。
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关键词:
- SoC FPGA /
- 千兆以太网 /
- 读出电子学 /
- CBM-TOF超级模块
Abstract: Several Multi-Gap Resistive Plate Chambers (MRPCs) was used to construct a Time of Flight (TOF) system in the Compressed Baryonic Matter (CBM) experiment. According to the requirements of the CBM experiment, the CBM-TOF wall is composed of 6 different types of super module. Each module contains five MRPC detectors, providing 320 electronic channels with data rates up to 6 Gbps for a single module. To evaluate the quality of CBM-TOF super module, in this paper, a data readout module based on Gigabit Ethernet technology was developed. The readout module accepts digitized time data from the front-end electronics using Altera SoC FPGAs and sends the data to the DAQ software in parallel via Gigabit Ethernet. Laboratory test results show that the overall data transfer rate of a single data transmission path can reach up to 550 Mbps, which can be used for CBM-TOF Super Module quality evaluation.-
Key words:
- SoC FPGA /
- Gigabit Ethernet /
- Readout Electronics /
- CBM-TOF Super Module
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