Description
Coping with the higher collision rates of the High-Luminosity Large
Hadron Collider (HL-LHC) requires the development of new ATLAS Liquid
Argon (LAr) Calorimeter readout electronics. The HL-LHC LAr frontend
(FE) readout is implemented on the Frontend Board 2 (FEB2), and is
designed to read out the full granularity of the calorimeter with full
precision over the 16-bit dynamic range at the bunch crossing
frequency of 40 MHz, while withstanding the high radiation levels
anticipated. Each 128-channel FEB2 board integrates a number of
custom-designed radiation-tolerant ASICs to amplify, shape, digitize
and transmit the calorimeter signals off the detector. This
presentation will summarize the FEB2 design and development process,
along with recent prototype performance and integration testing
results. Plans will also be reviewed for final production and
installation in the ATLAS cavern of the 1524 FEB2 boards required to
read out the almost 200k LAr calorimeter channels.
