FPGA-based 10-Gbit Ethernet Data Acquisition Interface for the Upgraded Electronics of the ATLAS Liquid Argon Calorimeters

20th International Conference on Computing in High Energy and Nuclear Physics

物理学;计算机科学

Grohs, J. Philipp^1

IKTP, TU Dresden, Zellescher Weg 19, Dresden

D-01069, Germany^1

关键词: 10 Gbps Ethernet;    ATLAS liquid argon calorimeters;    Calorimeter trigger systems;    High energy physics experiments;    High speed data acquisition;    In-house development;    Limited bandwidth;    Trigger readout electronics;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/513/1/012010/pdf
DOI  :  10.1088/1742-6596/513/1/012010

学科分类：计算机科学（综合）

来源: IOP

【 摘 要 】

A stepwise upgrade of the LHC is foreseen starting now until the year 2023 to increase the instantaneous luminosity up to five times of its design value. It implies a challenge for the ATLAS experiment coping with the expected event pile-up, especially for the Level-1 calorimeter trigger system. In order to keep the trigger rates within the limited bandwidth new algorithms have to be applied which in turn requires an upgrade of the ATLAS Liquid Argon calorimeter trigger readout electronics. Towards this upgrade, the ATLAS Liquid Argon calorimeter group develops a high-speed data acquisition interface in ATCA standard using commercial hardware instead of complex and expensive in-house developments where possible. This paper gives an overview of the general concepts of the DAQ interface, the engaged technologies and the current status of the development efforts for an FPGA based fast data link with a standard 10 Gbps Ethernet protocol which may also be useful for DAQ systems of other high energy physics experiments.