论文标题
ATLAS II升级的全球触发技术演示器
Global Trigger Technological Demonstrator for ATLAS Phase-II upgrade
论文作者
论文摘要
LHC的Atlas检测器将对高光度LHC进行主要的II升级。升级会影响所有主要的Atlas系统，包括触发器和数据采集系统。作为0级触发系统的一部分，全局触发器使用全粒度量热计细胞执行算法，完善触发对象并应用拓扑要求。全局触发器使用一个全局通用模块作为其设计的构建块。为了获得高输入和输出带宽和实质性处理能力，全局通用模块将托管最先进的FPGA和光学模块。为了评估以高数据速率运行的新一代光学模块和FPGA（最多28 GB/s），已经设计和测试了全球触发技术演示板。板上的主要硬件块是Xilinx virtex ultrascale+ 9p fpga和许多光学模块，包括高速芬萨蟒蛇和Samtec Firefly模块。已经对Finisar Boa和Samtec Firefly光学模块进行了长期链路测试，分别为25.65和27.58 GB/s。成功的结果表明，已经获得了与FPGA通信时光学模块的良好性能。本文提供了技术演示器的硬件概述和测量结果。
ATLAS detector at the LHC will undergo a major Phase-II upgrade for the High Luminosity LHC. The upgrade affects all major ATLAS systems, including the Trigger and Data Acquisition systems. As part of the Level-0 Trigger System, the Global Trigger uses full-granularity calorimeter cells to perform algorithms, refines the trigger objects and applies topological requirements. The Global Trigger uses a Global Common Module as the building block of its design. To achieve a high input and output bandwidth and substantial processing power, the Global Common Module will host the most advanced FPGAs and optical modules. In order to evaluate the new generation of optical modules and FPGAs running at high data rates (up to 28 Gb/s), a Global Trigger Technological Demonstrator board has been designed and tested. The main hardware blocks of the board are the Xilinx Virtex Ultrascale+ 9P FPGA and a number of optical modules, including high-speed Finisar BOA and Samtec FireFly modules. Long-run link tests have been performed for the Finisar BOA and Samtec FireFly optical modules running at 25.65 and 27.58 Gb/s respectively. Successful results demonstrating a good performance of the optical modules when communicating with the FPGA have been obtained. The paper provides a hardware overview and measurement results of the Technological Demonstrator.
