CERN Accelerating science

ATLAS Slides
Report number	ATL-DAQ-SLIDE-2018-138
Title	The Development of the Global Feature eXtractor (gFEX) for ATLAS Level 1 Calorimeter Trigger at the LHC
Author(s)	Tang, Shaochun (Brookhaven National Laboratory (BNL)) ; Begel, Michael (Brookhaven National Laboratory (BNL)) ; Chen, Hucheng (Brookhaven National Laboratory (BNL)) ; Lanni, Francesco (Brookhaven National Laboratory (BNL)) ; Takai, Helio (Brookhaven National Laboratory (BNL)) ; Wu, Weihao (Brookhaven National Laboratory (BNL))
Corporate author(s)	The ATLAS collaboration
Collaboration	ATLAS Collaboration
Submitted to	Topical Workshop on Electronics for Particle Physics, Santa Cruz, Ca, United States Of America, 11 - 15 Sep 2017
Submitted by	[email protected] on 26 Mar 2018
Subject category	Particle Physics - Experiment
Accelerator/Facility, Experiment	CERN LHC ; ATLAS
Abstract	During the ATLAS Phase-I upgrade, the gFEX will be designed to maintain the trigger acceptance against the increasing luminosity for the ATLAS Level-1 calorimeter trigger system. The gFEX is designed to identify patterns of energy associated with the hadronic decays of high momentum Higgs, W, & Z bosons, top quarks, and exotic particles in real time at the LHC crossing rate. The prototype v1 and v2 have been designed and fully tested in 2015 and 2016 respectively. With the lessons learned, a pre-production board with three UltraScale+ FPGAs and one ZYNQ UltraScale+, and 35 MiniPODs are implemented in an ATCA module. This board will receive coarse-granularity (0.2x0.2) information from the entire ATLAS calorimeters on up to 300 optical fibers and each FPGA has 24 links to the L1Topo at the speed up to 12.8 Gb/s.