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Performance of the CMS Zero Degree Calorimeters in pPb collisions at the LHC

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Published 7 May 2021 • © 2021 The Author(s)
, , Citation O. Surányi et al 2021 JINST 16 P05008 DOI 10.1088/1748-0221/16/05/P05008

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oliver.suranyi@cern.ch

Author affiliations

1 MTA-ELTE Lendület CMS Particle and Nuclear Physics Group, Eötvös Loránd University, Egyetem tér 1-3, 1053 Budapest, Hungary

2 Wigner Research Centre for Physics, Konkoly-Thege M. u. 29-33., 1121 Budapest, Hungary

3 University of Kansas, 1450 Jayhawk Boulevard, Lawrence, KS 66045, U.S.A.

4 University of Maryland, 7999 Regents Drive, College Park, MD 20742, U.S.A.

5 University of Iowa, 203 Van Allen Hall, Iowa City, IA 52242, U.S.A.

6 Florida State University, 600 W. College Avenue, Tallahassee, FL 32306, U.S.A.

7 University of Alabama, 500 University Boulevard East, Tuscaloosa, AL 35401, U.S.A.

8 NRC Kurchatov Institute (ITEP), Moscow, B. Cheremushkinskaya ulitsa 25, Moscow 117 259, Russia

9 Brown University, 182 Hope Street, Providence, RI 02912, U.S.A.

Dates

  1. Received 14 January 2021
  2. Accepted 2 March 2021
  3. Published

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1748-0221/16/05/P05008

Abstract

The two Zero Degree Calorimeters (ZDCs) of the CMS experiment are located at ± 140 m from the collision point and detect neutral particles in the |η| > 8.3 pseudorapidity region. This paper presents a study on the performance of the ZDC in the 2016 pPb run. The response of the detectors to ultrarelativistic neutrons is studied using in-depth Monte Carlo simulations. A method of signal extraction based on template fits is presented, along with a dedicated calibration procedure. A deconvolution technique for the correction of overlapping collision events is discussed.

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10.1088/1748-0221/16/05/P05008