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First beam tests of prototype silicon modules for the CMS High Granularity Endcap Calorimeter

Akchurin, N. and Bornheim, A. and Gawerc, D. and Kopp, G. and Pena, C. and Xie, S. and Zhang, Z. (2018) First beam tests of prototype silicon modules for the CMS High Granularity Endcap Calorimeter. Journal of Instrumentation, 13 . Art. No. P10023. ISSN 1748-0221. doi:10.1088/1748-0221/13/10/P10023.

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The High Luminosity phase of the Large Hadron Collider will deliver 10 times more integrated luminosity than the existing collider, posing significant challenges for radiation tolerance and event pileup on detectors, especially for forward calorimetry. As part of its upgrade program, the Compact Muon Solenoid collaboration is designing a high-granularity calorimeter (HGCAL) to replace the existing endcap calorimeters. It will feature unprecedented transverse and longitudinal readout and triggering segmentation for both electromagnetic and hadronic sections. The electromagnetic section and a large fraction of the hadronic section will be based on hexagonal silicon sensors of 0.5–1 cm^2 cell size, with the remainder of the hadronic section being based on highly-segmented scintillators with silicon photomultiplier readout. The intrinsic high-precision timing capabilities of the silicon sensors will add an extra dimension to event reconstruction, especially in terms of pileup rejection. First hexagonal silicon modules, using the existing Skiroc2 front-end ASIC developed for CALICE, have been tested in beams at Fermilab and CERN in 2016. We present results from these tests, in terms of system stability, calibration with minimum-ionizing particles and resolution (energy, position and timing) for electrons, and the comparisons of these quantities with GEANT4-based simulation.

Item Type:Article
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URLURL TypeDescription
Bornheim, A.0000-0002-0128-0871
Xie, S.0000-0003-2509-5731
Zhang, Z.0000-0002-1630-0986
Additional Information:© 2018 CERN for the benefit of the CMS collaboration. Published by IOP Publishing Ltd on behalf of Sissa Medialab. Original content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. Received: April 19, 2018; Revised: August 23, 2018; Accepted: September 20, 2018; Published: October 18, 2018.
Subject Keywords:Calorimeters; Performance of High Energy Physics Detectors; Si microstrip and pad detectors; Large detector systems for particle and astroparticle physics
Record Number:CaltechAUTHORS:20181108-092025903
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Official Citation:N. Akchurin et al 2018 JINST 13 P10023
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:90747
Deposited By: Tony Diaz
Deposited On:08 Nov 2018 20:51
Last Modified:16 Nov 2021 03:35

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