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Versatile firmware for the Common Readout Unit (CRU) of the ALICE experiment at the LHC
Journal of Instrumentation ( IF 1.3 ) Pub Date : 2021-06-08 , DOI: 10.1088/1748-0221/16/05/p05019
O. Bourrion 1 , J. Bouvier 1 , F. Costa 2 , E. Dvid 3 , J. Imrek 3 , T.M. Nguyen 3 , S. Mukherjee 4
Affiliation  

As from the run 3 of CERN LHC scheduled in 2022, the upgraded ALICE experiment will use a Common Readout Unit (CRU) at the heart of the data acquisition system. The CRU, based on the PCIe40 hardware designed for LHCb, is a common interface between 3 main sub-systems: the front-end, the computing system, and the trigger and timing system. The 475 CRUs will interface 10 different sub-detectors and reduce the total data throughput from 3.5 TB/s to 635 GB/s. The ALICE common firmware framework supports data taking in continuous and triggered mode and forwards clock, trigger and slow control to the front-end electronics. In this paper, the architecture and the data-flow performance are presented.



中文翻译:

LHC ALICE 实验通用读出单元 (CRU) 的多功能固件

从计划于 2022 年进行的 CERN LHC 第 3 次运行开始,升级后的 ALICE 实验将在数据采集系统的核心使用通用读出单元 (CRU)。CRU 基于为 LHCb 设计的 PCIe40 硬件,是 3 个主要子系统之间的通用接口:前端、计算系统、触发和计时系统。475 个 CRU 将连接 10 个不同的子探测器,并将总数据吞吐量从 3.5 TB/s 降低到 635 GB/s。ALICE 通用固件框架支持以连续和触发模式获取数据,并将时钟、触发和慢速控制转发到前端电子设备。在本文中,介绍了体系结构和数据流性能。

更新日期:2021-06-08
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