arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1806.09258physics.ins-deteess.SP
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用于CBM-TOF超级模块质量评估的读出电子学

Readout Electronics for CBM-TOF Super Module Quality Evaluation

Wei Jiang, Xiru Huang, Ping Cao, Chao Li, Junru Wang, Jiawen Li, Jianhui Yuan, Qi An

AI总结:

针对CBM-TOF超级模块质量评估中读出电子学的6Gbps高速数据传输挑战,提出基于千兆以太网的并行读出架构,经测试可满足最大传输速率要求且具备良好可扩展性。

摘要:

由MRPC(多气隙电阻板室)探测器组装而成的超级模块是压缩重子物质(Compressed Baryonic Matter, CBM)实验飞行时间(Time of Flight, TOF)系统的组成部分。在超级模块应用于CBM-TOF之前,需要对其质量进行评估。读出电子学面临着以6 Gbps最大速度传输数据的巨大挑战。本文提出了用于CBM-TOF超级模块质量评估的读出方法。为满足数据传输速率要求,设计了一种基于千兆以太网的并行架构。首先,数据通过光纤从前端电子学发送至四个读出模块组,每根光纤的最大传输速率为1.5 Gbps。接着,数据被进一步分配到16个并行的读出子模块,使得每个读出子模块的最大数据吞吐量为375 Mbps,处于其550 Mbps的处理能力范围内。最后,读出子模块通过标准千兆以太网将数据发送至数据采集(data acquisition, DAQ)软件。所提出的读出方法具有良好的可扩展性,能够满足可变数据速率的不同需求。初步测试结果表明,四个并行读出组中的每一个都能以1.6 Gbps的速度传输数据,这表明整个读出系统能够满足6 Gbps的最大数据传输速度要求。

英文摘要:

A super module assembled with MRPC detectors is a component of TOF (Time of Flight) system for the Compressed Baryonic Matter (CBM) experiment. Before the super modules are applied to CBM-TOF, their quality needs to be evaluated. The readout electronics is confronted with a tremendous challenge of transmitting data at the maximal speed of 6 Gbps. In this paper, the readout method for CBM-TOF super module quality evaluation is presented. A parallel architecture based on the Gigabit Ethernet is designed to meet the requirement for data transmission rate. First, the data is sent from the front-end electronics to four readout module groups via optical fibers at the maximal rate of 1.5 Gbps per fiber. Next, the data are further distributed to sixteen parallel daughter readout models so that the maximal data throughput of each daughter readout module is 375 Mbps, within its capacity of 550 Mbps. Finally, the readout daughter modules send data to the data acquisition (DAQ) software through standard Gigabit Ethernet. The proposed readout method has the advantage of good scalability, so it can meet different requirements for variable data rate. The preliminary test result shows that each of four parallel readout groups can transmit data at the speed of 1.6 Gbps, which indicates that the overall readout system can meet the requirement for the maximal data-transmission speed of 6 Gbps.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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