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The Phase-2 electronics upgrade of the ATLAS liquid argon calorimeter system

Journal Article · · Journal of Instrumentation
 [1]
  1. McGill Univ., Montreal, QC (Canada). Dept of Physics
+ Show Author Affiliations
The LHC high-luminosity upgrade in 2024–2026 requires the associated detectors to operate at luminosities about 5–7 times larger than assumed in their original design. The pile-up is expected to increase to up to 200 events per proton bunch-crossing. The current readout of the ATLAS liquid argon calorimeters does not provide sufficient buffering and bandwidth capabilities to accommodate the hardware triggers requirements imposed by these harsh conditions. Furthermore, the expected total radiation doses are beyond the qualification range of the current front-end electronics. For these reasons an almost complete replacement of the front-end and off-detector readout system is foreseen for the 182,468 readout channels. Here, the new readout system will be based on a free-running architecture, where calorimeter signals are amplified, shaped and digitized by on-detector electronics, then sent at 40 MHz to the off-detector electronics for further processing. Results from the design studies on the performance of the components of the readout system are presented, as well as the results of the tests of the first prototypes.
Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC)
Sponsoring Organization:
USDOE
Contributing Organization:
ATLAS Liquid Argon Calorimeter Group
OSTI ID:
1544309
Alternate ID(s):
OSTI ID: 22885086
Journal Information:
Journal of Instrumentation, Journal Name: Journal of Instrumentation Journal Issue: 03 Vol. 13; ISSN 1748-0221
Publisher:
Institute of Physics (IOP)Copyright Statement
Country of Publication:
United States
Language:
English

References (5)

Construction, assembly and tests of the ATLAS electromagnetic barrel calorimeter
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journal March 2006
Construction, assembly and testing of the ATLAS hadronic end-cap calorimeter journal May 2007
The ATLAS Forward Calorimeter journal February 2008
The GBT-SerDes ASIC prototype journal November 2010
A 20 mW, 4.8 Gbit/sec, SEU robust serializer in 65nm for read-out of data from LHC experiments journal January 2014

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Related Subjects

47 OTHER INSTRUMENTATION
Calorimeters
Electronic detector readout concepts (gas
liquid)
Front-end electronics for detector readout
Radiation-hard electronics