Electromagnetic calorimeter time measurement applications in the SND physics analysis

N.A. Melnikova,M.N. Achasov, A.A. Botov,V.P. Druzhinin,L.V. Kardapoltsev,A.A. Korol, D.P. Kovrizhin,S.I. Serednyakov,I.K. Surin

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT（2023）

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摘要

The SND is a non-magnetic detector at the VEPP-2000 e+e− collider (BINP, Novosibirsk) designed for hadronic cross-section measurements in the center-of-mass energy range up to 2 GeV. The important part of the detector is a segmented electromagnetic calorimeter (EMC) with three layers of NaI(Tl) counters. The EMC signal shaping and digitizing electronics based on FADC allow one to obtain both the signal amplitude and the arrival time. We describe the EMC signal processing and how the EMC measured time is applied in event reconstruction and physics analysis.

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关键词

Calorimeters,Electronic detector readout concepts,Detector modeling and simulations,Timing detectors,Digital signal processing (DSP)

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