Simulation of argon response and light detection in the DarkSide-50 dual phase TPC
Cadeddu, M.;Cadoni, M.;Caravati, M.;Cicalo, C.;Devoto, A.;Gabriele, F.;Galbiati, C.;Lissia, M.;Mandarano, A.;Monte, A.;Rossi, N.;
2017-01-01
Abstract
A Geant4-based Monte Carlo package named G4DS has been developed to simulate the response of DarkSide-50, an experiment operating since 2013 at LNGS, designed to detect WIMP interactions in liquid argon. In the process of WIMP searches, DarkSide-50 has achieved two fundamental milestones: the rejection of electron recoil background with a power of â¼107, using the pulse shape discrimination technique, and the measurement of the residual39Ar contamination in underground argon, â¼3 orders of magnitude lower with respect to atmospheric argon. These results rely on the accurate simulation of the detector response to the liquid argon scintillation, its ionization, and electron-ion recombination processes. This work provides a complete overview of the DarkSide Monte Carlo and of its performance, with a particular focus on PARIS, the custom-made liquid argon response model.File | Size | Format | |
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Agnes_2017_J._Inst._12_P10015.pdf Solo gestori archivio
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