Volume 476 - 42nd International Conference on High Energy Physics (ICHEP2024) - Operation, Performance and Upgrade (incl. HL-LHC) of Present Detectors Posters
Development of the ATLAS Liquid Argon Calorimeter Readout Electronics for the HL-LHC
T. Barillari*  on behalf of the ATLAS LAr Calorimeter Collaboration
*: corresponding author
Full text: pdf
Pre-published on: December 17, 2024
Published on: April 29, 2025
Abstract
The ATLAS Liquid Argon Calorimeter readout electronics will be upgraded to withstand higher
radiation doses and harsher conditions during the HL-LHC. In this context, the upgraded readout
chain will include front-end, calibration, processing, and timing control boards. The front-end
boards will amplify and digitize the ionization signal with high precision and low noise. Custom
made chips for amplifying, shaping, and digitizing the calorimeter signals have been developed,
demonstrating stability under irradiation tests. Calibration boards will ensure precise calibration
across all channels by using custom ASICs which will also remain stable under irradiation. The
digitized signal will be processed for energy estimation and time stamping purposes by using
boards featuring FPGAs connected via high-speed links. To enhance their functionality, we are
exploring the use of artificial neural networks within the FPGAs. Lastly, the timing and control
system will ensure the synchronization across the different boards. The current status of the
prototype boards and testing efforts is presented.
DOI: https://doi.org/10.22323/1.476.0972
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