CALIS - A CALibration Insertion System for the DarkSide-50 dark matter search experiment

Agnes, P.;Albuquerque, I. F. M.;Alexander, T.;Alton, A. K.;Asner, D. M.;Back, H. O.;Baldin, B.;Biery, K.;Bocci, V.;Bonfini, G.;Bonivento, W.;Bossa, M.;Bottino, B.;Brigatti, A.;Brodsky, J.;Budano, F.;Bussino, S.;Cadeddu, M.;Cadonati, L.;Cadoni, M.;Calaprice, F.;Canci, N.;Candela, A.;Caravati, M.;Cariello, M.;Carlini, M.;Catalanotti, S.;Cavalcante, P.;Chepurnov, A.;Cicalò, C.;Cocco, A. G.;Covone, G.;D'Angelo, D.;D'Incecco, M.;Davini, S.;De Cecco, S.;De Deo, M.;De Vincenzi, M.;Derbin, A.;Devoto, A.;Di Eusanio, F.;Di Pietro, G.;Dionisi, C.;Edkins, E.;Empl, A.;Fan, A.;Fiorillo, G.;Fomenko, K.;Forster, G.;Franco, D.;Gabriele, F.;Galbiati, C.;Giagu, S.;Giganti, C.;Giovanetti, G. K.;Goretti, A. M.;Granato, F.;Grandi, L.;Gromov, M.;Guan, M.;Guardincerri, Y.;Hackett, B. R.;Herner, K.;Hughes, D.;Humble, P.;Hungerford, E. V.;Ianni, A.l.;Ianni, A.n.;James, I.;Johnson, T. N.;Jollet, C.;Keeter, K.;Kendziora, C. L.;Koh, G.;Korablev, D.;Korga, G.;Kubankin, A.;Li, X.;Lissia, M.;Loer, B.;Lombardi, P.;Longo, G.;Ma, Y.;Machado, A. A.;Machulin, I. N.;Mandarano, A.;Mari, S. M.;Maricic, J.;Marini, L.;Martoff, C. J.;Meregaglia, A.;Meyers, P. D.;Milincic, R.;Miller, J. D.;Montanari, D.;Monte, A.;Mount, B. J.;Muratova, V. N.;Musico, P.;Napolitano, J.;Agasson, A. Navrer;Odrowski, S.;Orsini, M.;Ortica, F.;Pagani, L.;Pallavicini, M.;Pantic, E.;Parmeggiano, S.;Pelczar, K.;Pelliccia, N.;Pocar, A.;Pordes, S.;Pugachev, D. A.;Qian, H.;Randle, K.;Ranucci, G.;Razeti, M.;Razeto, A.;Reinhold, B.;Renshaw, A. L.;Rescigno, M.;Riffard, Q.;Romani, A.;Rossi, B.;Rossi, N.;Rountree, D.;Sablone, D.;Saggese, P.;Saldanha, R.;Sands, W.;Savarese, C.;Schlitzer, B.;Segreto, E.;Semenov, D. A.;Shields, E.;Singh, P. N.;Skorokhvatov, M. D.;Smirnov, O.;Sotnikov, A.;Stanford, C.;Suvorov, Y.;Tartaglia, R.;Tatarowicz, J.;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.i.;Xiao, X.;Xu, J.;Yang, C.;Zec, A.;Zhong, W.;Zhu, C.;Zuzel, G.

2017-01-01

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Abstract

This paper describes the design, fabrication, commissioning and use of a CALibration source Insertion System (CALIS) in the DarkSide-50 direct dark matter search experiment. CALIS deploys radioactive sources into the liquid scintillator veto to characterize the detector response and detection efficiency of the DarkSide-50 Liquid Argon Time Projection Chamber, and the surrounding 30 t organic liquid scintillator neutron veto. It was commissioned in September 2014 and has been used successfully in several gamma and neutron source campaigns since then. A description of the hardware and an excerpt of calibration analysis results are given below.