Simulation of argon response and light detection in the DarkSide-50 dual phase TPC. (23rd October 2017)

• Record Type: Journal Article
• Authors: Agnes, P.; Albuquerque, I.F.M.; Alexander, T.; Alton, A.K.; Asner, D.M.; Back, H.O.; Biery, K.; Bocci, V.; Bonfini, G.; Bonivento, W.; Bossa, M.; Bottino, B.; Budano, F.; Bussino, S.; Cadeddu, M.; Cadoni, M.; Calaprice, F.; Canci, N.; Candela, A.; Caravati, M.; Cariello, M.; Carlini, M.; Catalanotti, S.; Cataudella, V.; Cavalcante, P.; Chepurnov, A.; Cicalò, C.; Cocco, A.G.; Covone, G.; D'Angelo, D.; D'Incecco, M.; Davini, S.; de Candia, A.; Cecco, S. De; Deo, M. De; Filippis, G. De; Vincenzi, M. De; Derbin, A.V.; Rosa, G. De; Devoto, A.; Eusanio, F. Di; Pietro, G. Di; Dionisi, C.; Edkins, E.; Empl, A.; Fan, A.; Fiorillo, G.; Fomenko, K.; Franco, D.; Gabriele, F.; Galbiati, C.; Giagu, S.; Giganti, C.; Giovanetti, G.K.; Goretti, A.M.; Granato, F.; Gromov, M.; Guan, M.; Guardincerri, Y.; Hackett, B.R.; Herner, K.; Hughes, D.; Humble, P.; Hungerford, E.V.; Ianni, An.; James, I.; Johnson, T.N.; Keeter, K.; Kendziora, C.L.; Koh, G.; Korablev, D.; Korga, G.; Kubankin, A.; Li, X.; Lissia, M.; Loer, B.; Longo, G.; Ma, Y.; Machado, A.A.; Machulin, I.N.; Mandarano, A.; Mari, S.M.; Maricic, J.; Martoff, C.J.; Meyers, P.D.; Milincic, R.; Monte, A.; Mount, B.J.; Muratova, V.N.; Musico, P.; Napolitano, J.; Agasson, A. Navrer; Oleinik, A.; Orsini, M.; Ortica, F.; Pagani, L.; Pallavicini, M.; Pantic, E.; Pelczar, K.; Pelliccia, N.; Pocar, A.; Pordes, S.; Pugachev, D.A.; Qian, H.; Randle, K.; Razeti, M.; Razeto, A.; Reinhold, B.; Renshaw, A.L.; Rescigno, M.; Riffard, Q.; Romani, A.; Rossi, B.; Rossi, N.; Sablone, D.; Sands, W.; Sanfilippo, S.; Savarese, C.; Schlitzer, B.; Segreto, E.; Semenov, D.A.; Singh, P.N.; Skorokhvatov, M.D.; Smirnov, O.; Sotnikov, A.; Stanford, C.; Suvorov, Y.; Tartaglia, R.; Testera, G.; Tonazzo, A.; Trinchese, P.; Unzhakov, E.V.; Verducci, M.; Vishneva, A.; Vogelaar, B.; Wada, M.; Walker, S.; Wang, H.; Wang, Y.; Watson, A.W.; Westerdale, S.; Wilhelmi, J.; Wojcik, M.M.; Xiang, X.; Xiao, X.; Yang, C.; Ye, Z.; Zhu, C.; Zuzel, G.;
• Is Part Of: Journal of instrumentation. Volume 12:Number 10(2017:Oct.)
• Page Start: P10015
• Page End: P10015
• Publication Date: 2017-10-23
• Subjects: Scientific apparatus and instruments -- Periodicals; 502.84
• DOI: 10.1088/1748-0221/12/10/P10015
• Languages: English
• ISSNs: 1748-0221

Abstract

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\sim ∼ 10^7 7, using the pulse shape discrimination technique, and the measurement of the residual^{39} 39 Ar contamination in underground argon, \sim ∼ 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.