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 ∼107 , using the pulse shape discrimination technique, and the measurement of the residual 39Ar contamination in underground argon, ∼3 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.

Agnes, P., Albuquerque, I.F.M., Alexander, T., Alton, A.K., Asner, D.M., Back, H.O., et al. (2017). Simulation of argon response and light detection in the DarkSide-50 dual phase TPC. JOURNAL OF INSTRUMENTATION, 12(10), P10015-P10015 [10.1088/1748-0221/12/10/P10015].

Simulation of argon response and light detection in the DarkSide-50 dual phase TPC

BOSSA, MARIA;BUDANO, FEDERICO;BUSSINO, Severino Angelo Maria;JAMES, IRINA;Mari, S. M.;SANFILIPPO, SIMONE;
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 ∼107 , using the pulse shape discrimination technique, and the measurement of the residual 39Ar contamination in underground argon, ∼3 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.
Agnes, P., Albuquerque, I.F.M., Alexander, T., Alton, A.K., Asner, D.M., Back, H.O., et al. (2017). Simulation of argon response and light detection in the DarkSide-50 dual phase TPC. JOURNAL OF INSTRUMENTATION, 12(10), P10015-P10015 [10.1088/1748-0221/12/10/P10015].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11590/324052
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