CERN Accelerating science

ATLAS Note
Report number	ATL-DAQ-PROC-2022-024
Title	Global Trigger Versatile Module for ATLAS Phase-II upgrade
Author(s)	Filimonov, Viacheslav (Johannes Gutenberg Universitaet Mainz (DE)) ; Bauss, Bruno (Johannes Gutenberg Universitaet Mainz (DE)) ; Buescher, Volker (Johannes Gutenberg Universitaet Mainz (DE)) ; Schaefer, Uli (Johannes Gutenberg Universitaet Mainz (DE)) ; Ta, Duc Bao (Johannes Gutenberg Universitaet Mainz (DE))
Corporate Author(s)	The ATLAS collaboration
Collaboration	ATLAS Collaboration
Publication	2022
Imprint	07 Dec 2022
Number of pages	6
In:	2022 IEEE Nuclear Science Symposium (NSS), Medical Imaging Conference (MIC) and Room Temperature Semiconductor Detector (RTSD) Conference (NSS/MIC 2022), Milan, Italy, 5 - 12 Nov 2022
Subject category	Particle Physics - Experiment
Accelerator/Facility, Experiment	CERN LHC ; ATLAS
Free keywords	LHC ; ATLAS ; FPGA ; Optical Modules
Abstract	The ATLAS detector at the Large Hadron Collider will undergo a major Phase-II upgrade for the High Luminosity LHC. The upgrade affects all the main ATLAS systems including the Trigger and Data Acquisition. As part of the Level-0 Trigger System, the Global Trigger uses full-granularity calorimeter cells to perform algorithms, refines the L0Calo trigger objects and applies topological requirements. The Global Trigger uses an ATCA Global Common Module as a building block of its design. The additional, standalone, Global Trigger Versatile Module has been designed according to the Global Trigger hardware specifications. The Global Trigger Versatile Module acts as an auxiliary hardware component that can be used for development, testing and operational purposes within and beyond the Global Trigger in projects requiring high bandwidth and processing capabilities. The Global Trigger Versatile Module hosts an advanced Xilinx Ultrascale+ VU13P FPGA and Finisar BOA optical modules running at data rates up to 25.8 Gb/s, as well as other hardware resources needed for the Global Trigger, located on a high-density PCB, optimized for high-speed data transmission. The Global Trigger Versatile Module successfully passed a full testing program, including verification of the main hardware functionality of the module, performance evaluation of the high-speed optical modules and the FPGA, and Global Common Module development firmware tests. Successful results demonstrating a good performance of the on-board components have been obtained.