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

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.; De Cecco, S.; De Deo, M.; De Filippis, G.; De Vincenzi, M.; Derbin, A. V.; De Rosa, G.; Devoto, A.; Di Eusanio, F.; Di Pietro, G.; 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.

doi:10.1088/1748-0221/12/10/P10015

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.

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

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.;De Cecco, S.;De Deo, M.;De Filippis, G.;De Vincenzi, M.;Derbin, A. V.;De Rosa, G.;Devoto, A.;Di Eusanio, F.;Di Pietro, G.;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.

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.