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Time alignment of the front end electronics of the LHCb calorimeters

Abstract : LHCb is the experiment at the Large Hadron Collider at CERN designed for performing studies of CP-symmetry violation and rare decays of B-hadrons. Its calorimeter system allows to trigger on photons and electrons by associating the information from a scintillating pad signing charged particle (SPD), a pre-shower tagging electromagnetic particles (PS), an electromagnetic calorimeter (ECAL) and a hadronic calorimeter (HCAL). We present the principles and procedures for the fine time-alignment throughout the commissioning and the first collision phases. We give a particular emphasis to the choices made in the electronic design of the calorimeters to deal with the signal shape and spill over. Also we summarise the achieved levels of synchronisation.
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Contributor : Sabine Starita <>
Submitted on : Monday, October 29, 2012 - 5:26:37 PM
Last modification on : Tuesday, April 20, 2021 - 12:00:11 PM

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C. Abellan Beteta, E. Aguiló Chivite, Ziad Ajaltouni, Y. Amhis, S. Barsuk, et al.. Time alignment of the front end electronics of the LHCb calorimeters. Journal of Instrumentation, IOP Publishing, 2012, 7, pp.P08020. ⟨10.1088/1748-0221/7/08/P08020⟩. ⟨in2p3-00746820⟩



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