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

12 Feb 2021  ·  O. Surányi, A. Al-Bataineh, J. Bowen, S. Cooper, M. Csanád, V. Hagopian, D. Ingram, C. Ferraioli, T. Grassi, R. Kellogg, E. Laird, G. Martinez, W. McBrayer, A. Mestvirishvili, A. Mignerey, M. Murray, M. Nagy, Y. Onel, F. Siklér, M. Toms, G. Veres, Q. Wang ·

The two Zero Degree Calorimeters (ZDCs) of the CMS experiment are located at $\pm 140~$m from the collision point and detect neutral particles in the $|\eta| > 8.3$ 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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High Energy Physics - Experiment Instrumentation and Detectors