CentOS Linux for the ATLAS MUCTPI Upgrade

R Spiwoks,A Kulinska,S Haas,T Pauly,M Saimpert,P Papageorgiou,P Farthouat,A Armbruster,N Ellis,S Perrella,T Wengler,P Czodrowski,P Vichoudis,A Marzin

doi:10.1109/tns.2021.3084246

R Spiwoks, A Kulinska + Show 12 more

Open Access

https://doi.org/10.1109/tns.2021.3084246

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Abstract

A new Muon-to-Central-Trigger Processor Interface (MUCTPI) was built as part of the upgrade of the ATLAS Level-1 trigger system for the next Run of the Large Hadron Collider at CERN. The MUCTPI has 208 high-speed optical serial links for receiving muon candidates from the muon trigger detectors. Three high-end FPGAs are used for real-time processing of the muon candidates, for sending trigger information to other parts of the trigger system, and for sending summary information to the data acquisition and monitoring system. A System-on-Chip (SoC) is used for the control, configuration and monitoring of the hardware and the operation of the MUCTPI. The SoC consists of an FPGA part and a processor system. The FPGA part provides communication with the processing FPGAs, while the processor system runs software for communication with the run-control system of the ATLAS experiment. In this paper we will describe our experience with running CentOS Linux on the SoC. Cross-compilation together with the existing framework for building of the ATLAS trigger and data acquisition (TDAQ) software is being used in order to allow the deployment of the TDAQ software directly on the SoC.

Highlights

ATLAS is a general-purpose experiment at the Large Hadron Collider (LHC) at CERN [1]
The ATLAS trigger and data acquisition (TDAQ) system [2] consists of a two-level trigger system
We have developed a single setup script to set up the host PC for development, i.e. cross-compilation, or the SoC of the Muon-to-Central-Trigger Processor Interface (MUCTPI) for deployment

Summary

INTRODUCTION

ATLAS is a general-purpose experiment at the Large Hadron Collider (LHC) at CERN [1] It observes protonproton collisions at a center-of-mass energy of almost 14 TeV, with a bunch crossing (BC) every 25 ns (40 MHz) and up to 80 pile-up collisions expected for the run (Run 3), starting in 2022. The Muon-to-Central-Trigger-Processor Interface (MUCTPI) receives muon candidate information from 208 muon Sector-Logic modules, and combines the information. It avoids double counting of single muons, which are detected by more than one muon sector due to the geometrical overlap of the chambers and the trajectory of the muons in the magnetic field. The CTP combines all trigger information and takes the final Level-1 Accept or Reject decision

MUCTPI UPGRADE

SYSTEM-ON-CHIP

USE OF CENTOS LINUX

CONCLUSION