New Preshower detector for DIRAC Experiment
M.Pentia, S.Aogaki, D.Dumitriu, D.Fluerasu, M.Gugiu, V.Yazkov
TL;DR
This paper introduces a new two-layer scintillator preshower detector for the DIRAC experiment, significantly enhancing electron background rejection efficiency in particle pair measurements.
Contribution
The paper presents a novel two-layer scintillator preshower detector integrated with the Cherenkov detector, improving electron rejection in the DIRAC setup.
Findings
Electron rejection efficiency exceeds 99.9% in 1-7 GeV/c range
Enhanced detector design increases overall measurement accuracy
Successful implementation within the existing DIRAC setup
Abstract
The Preshower (PSh) detector is a component of the DIRAC setup. It is designed to improve rejection efficiency of e-e+ pairs background in the {\pi}{\pi} and K{\pi} pair measurement. To increase the overall efficiency, a new two-layer structure scintillator Preshower detector has been realized in the region where the Nitrogen Cherenkov detector has been shortened to introduce new detectors. The new Preshower-Cherenkov combination ensures the electron rejection efficiency better than 99.9% in momentum region 1-7 GeV/c.
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