Speaker
Mr
Maximilian Hils
(Technische Universität Dresden)
Description
The ATLAS Liquid Argon (LAr) Calorimeters were designed and built to
measure electromagnetic and hadronic energy in proton-proton
collisions produced at the LHC at centre-of-mass energies up to 14 TeV
and instantaneous luminosities up to
$10^{34}/cm^2/s$. The High Luminosity LHC (HL-LHC)
programme is now developed for up to 5-7 times the design luminosity,
with the goal of accumulating an integrated luminosity of
$3000~fb^{-1}$.
In the HL-LHC phase, the increased radiation levels require a
replacement of the front-end electronics of the LAr
Calorimeters. Furthermore, the ATLAS trigger system is foreseen to
increase the trigger accept rate by a factor 10 to 1 MHz and the
trigger latency by a factor of 20 which requires a larger data volume
to be buffered. Therefore, the LAr Calorimeter read-out will be
exchanged with a new front-end and a high bandwidth back-end system
for receiving data from all 186.000 channels at 40 MHz LHC
bunch-crossing frequency and for off-detector buffering. The talk will
give an overview of the developement of radiation tolerant components
like low-noise pre-amplifier and shapers, 10-14 bit and 40-80 MHz
analog-to-digital converters (ADCs) with low power and latency,
integrated serializer and optical transceivers, as well as a 140 Tb/s
digital processing system based on high-performance FPGAs. Results from
research and development of individual components and their radiation
qualification as well as the overall system design will be presented.
sented.
Collaboration
ATLAS Liquid Argon Calorimeter Group
Primary author
Arno Straessner
(ATLAS Liquid Argon Calorimeter Group)
