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

Abstract

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.

17 pages, 15 figures

References in corpus (7)

• Measurement of the pseudorapidity and centrality dependence of the transverse energy density in PbPb collisions at sqrt(s[NN]) = 2.76 TeV
• Reconstruction of signal amplitudes in the CMS electromagnetic calorimeter in the presence of overlapping proton-proton interactions
• Status of Zero Degree Calorimeter for CMS Experiment
• The BRAN luminosity detectors for the LHC
• Commissioning of the CMS zero degree calorimeter using LHC beam
• Centrality control of hadron-nucleus interactions by detection of slow nucleons
• Measuring Photons and Neutrons at Zero Degrees in CMS

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