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Light yield in DarkSide-10: A prototype two-phase argon TPC for dark matter searches

Author(s): Alexander, T; Alton, D; Arisaka, K; Back, HO; Beltrame, P; et al

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Abstract: As part of the DarkSide program of direct dark matter searches using two-phase argon TPCs, a prototype detector with an active volume containing 10 kg of liquid argon, DarkSide-10, was built and operated underground in the Gran Sasso National Laboratory in Italy. A critically important parameter for such devices is the scintillation light yield, as photon statistics limits the rejection of electron-recoil backgrounds by pulse shape discrimination. We have measured the light yield of DarkSide-10 using the readily-identifiable full-absorption peaks from gamma ray sources combined with single-photoelectron calibrations using low-occupancy laser pulses. For gamma lines of energies in the range 122-1275 keV, we get light yields averaging 8.887 +/- 0.003(stat)+/- 0.444(sys) p.e./keV(ee). With additional purification, the light yield measured at 511 key increased to 9.142 +/- 0.006(stat) p.e./keV(ee). Published by Elsevier B.V.
Publication Date: Sep-2013
Electronic Publication Date: 29-Aug-2013
Citation: Alexander, T, Alton, D, Arisaka, K, Back, HO, Beltrame, P, Benziger, J, Bonfini, G, Brigatti, A, Brodsky, J, Cadonati, L, Calaprice, F, Candela, A, Cao, H, Cavalcante, P, Chavarria, A, Chepurnov, A, Cline, D, Cocco, AG, Condon, C, D Angelo, D, Davini, S, De Haas, E, Derbin, A, Di Pietro, G, Dratchnev, I, Durben, D, Empl, A, Etenko, A, Fan, A, Fiorillo, G, Fomenko, K, Gabriele, F, Galbiati, C, Gazzana, S, Ghag, C, Ghiano, C, Goretti, A, Grandi, L, Gromov, M, Guan, M, Guo, C, Guray, G, Hungerford, EV, Ianni, Al, Ianni, An, Kayunov, A, Keeter, K, Kendziora, C, Kidner, S, Kobychev, V, Koh, G, Korablev, D, Korga, G, Shields, E, Li, P, Loer, B, Lombardi, P, Love, C, Ludhova, L, Lukyanchenko, L, Lund, A, Lung, K, Ma, Y, Machulin, I, Maricic, J, Martoff, CJ, Meng, Y, Meroni, E, Meyers, PD, Mohayai, T, Montanari, D, Montuschi, M, Mosteiro, P, Mount, B, Muratova, V, Nelson, A, Nemtzow, A, Nurakhov, N, Orsini, M, Ortica, F, Pallavicini, M, Pantic, E, Parmeggiano, S, Parsells, R, Pelliccia, N, Perasso, L, Perfetto, F, Pinsky, L, Pocar, A, Pordes, S, Ranucci, G, Razeto, A, Romani, A, Rossi, N, Saggese, P, Saldanha, R, Salvo, C, Sands, W, Seigar, M, Semenov, D, Skorokhvatov, M, Smirnov, O, Sotnikov, A, Sukhotin, S, Suvorov, Y, Tartaglia, R, Tatarowicz, J, Testera, G, Teymourian, A, Thompson, J, Unzhakov, E, Vogelaar, RB, Wang, H, Westerdale, S, Wojcik, M, Wright, A, Xu, J, Yang, C, Zavatarelli, S, Zehfus, M, Zhong, W, Zuzel, G. (2013). Light yield in DarkSide-10: A prototype two-phase argon TPC for dark matter searches. ASTROPARTICLE PHYSICS, 49 (44 - 51. doi:10.1016/j.astropartphys.2013.08.004
DOI: doi:10.1016/j.astropartphys.2013.08.004
ISSN: 0927-6505
EISSN: 1873-2852
Pages: 44 - 51
Type of Material: Journal Article
Journal/Proceeding Title: ASTROPARTICLE PHYSICS
Version: Author's manuscript

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