DarkSide-20k: A 20 Tonne Two-Phase LAr TPC for Direct Dark Matter Detection at LNGS
Creators: name: Aalseth, C. E.
name: Acerbi, F.
name: Agnes, P.
name: Albuquerque, I. F. M.
name: Alexander, T.
name: Alici, A.
name: Alton, A. K.
name: Antonioli, P.
name: Arcelli, S.
name: Ardito, R.
name: Arnquist, I. J.
name: Asner, D. M.
name: Ave, M.
name: Back, H. O.
name: Olmedo, A. I. Barrado
name: Batignani, G.
name: Bertoldo, E.
name: Bettarini, S.
name: Bisogni, M. G.
name: Bocci, V.
name: Bondar, A.
name: Bonfini, G.
name: Bonivento, W.
name: Bossa, M.
name: Bottino, B.
name: Boulay, M.
name: Bunker, R.
name: Bussino, S.
name: Buzulutskov, A.
name: Cadeddu, M.
name: Cadoni, M.
name: Caminata, A.
name: Canci, N.
name: Candela, A.
name: Cantini, C.
name: Caravati, M.
name: Cariello, M.
name: Carlini, M.
name: Carpinelli, M.
name: Castellani, A.
name: Catalanotti, S.
name: Cataudella, V.
name: Cavalcante, P.
name: Cavuoti, S.
name: Cereseto, R.
name: Chepurnov, A.
name: Cicalò, C.
name: Cifarelli, L.
name: Citterio, M.
name: Cocco, A. G.
name: Colocci, M.
name: Corgiolu, S.
name: Covone, G.
name: Crivelli, P.
name: D'Antone, I.
name: D'Incecco, M.
name: D'Urso, D.
name: Rolo, M. D. Da Rocha
name: Daniel, M.
name: Davini, S.
name: de Candia, A.
name: De Cecco, S.
name: De Deo, M.
name: De Filippis, G.
name: De Guido, G.
name: De Rosa, G.
name: Dellacasa, G.
name: Della Valle, M.
name: Demontis, P.
name: Derbin, A.
name: Devoto, A.
name: Di Eusanio, F.
name: Di Pietro, G.
name: Dionisi, C.
name: Dolgov, A.
name: Dormia, I.
name: Dussoni, S.
name: Empl, A.
name: Diaz, M. Fernandez
name: Ferri, A.
name: Filip, C.
name: Fiorillo, G.
name: Fomenko, K.
name: Franco, D.
name: Froudakis, G. E.
name: Gabriele, F.
name: Gabrieli, A.
name: Galbiati, C.
name: Abia, P. Garcia
name: Gendotti, A.
name: Ghisi, A.
name: Giagu, S.
name: Giampa, P.
name: Gibertoni, G.
name: Giganti, C.
name: Giorgi, M. A.
name: Giovanetti, G. K.
name: Gligan, M. L.
name: Gola, A.
name: Gorchakov, O.
name: Goretti, A. M.
name: Granato, F.
name: Grassi, M.
name: Grate, J. W.
name: Grigoriev, G. Y.
name: Gromov, M.
name: Guan, M.
name: Guerra, M. B. B.
name: Guerzoni, M.
name: Gulino, M.
name: Haaland, R. K.
name: Hallin, A.
name: Harrop, B.
name: Hoppe, E. W.
name: Horikawa, S.
name: Hosseini, B.
name: Hughes, D.
name: Humble, P.
name: Hungerford, E. V.
name: Ianni, An.
name: Jillings, C.
name: Johnson, T. N.
name: Keeter, K.
name: Kendziora, C. L.
name: Kim, S.
name: Koh, G.
name: Korablev, D.
name: Korga, G.
name: Kubankin, A.
name: Kuss, M.
name: Kuźniak, M.
name: Lehnert, B.
name: Li, X.
name: Lissia, M.
name: Lodi, G. U.
name: Loer, B.
name: Longo, G.
name: Loverre, P.
name: Lussana, R.
name: Luzzi, L.
name: Ma, Y.
name: Machado, A. A.
name: Machulin, I. N.
name: Mandarano, A.
name: Mapelli, L.
name: Marcante, M.
name: Margotti, A.
name: Mari, S. M.
name: Mariani, M.
name: Maricic, J.
name: Martoff, C. J.
name: Mascia, M.
name: Mayer, M.
name: McDonald, A. B.
name: Messina, A.
name: Meyers, P. D.
name: Milincic, R.
name: Moggi, A.
name: Moioli, S.
name: Monroe, J.
name: Monte, A.
name: Morrocchi, M.
name: Mount, B. J.
name: Mu, W.
name: Muratova, V. N.
name: Murphy, S.
name: Musico, P.
name: Nania, R.
name: Agasson, A. Navrer
name: Nikulin, I.
name: Nosov, V.
name: Nozdrina, A. O.
name: Nurakhov, N. N.
name: Oleinik, A.
name: Oleynikov, V.
name: Orsini, M.
name: Ortica, F.
name: Pagani, L.
name: Pallavicini, M.
name: Palmas, S.
name: Pandola, L.
name: Pantic, E.
name: Paoloni, E.
name: Paternoster, G.
name: Pavletcov, V.
name: Pazzona, F.
name: Peeters, S.
name: Pelczar, K.
name: Pellegrini, L. A.
name: Pelliccia, N.
name: Perotti, F.
name: Perruzza, R.
name: Fortes, V. Pesudo
name: Piemonte, C.
name: Pilo, F.
name: Pocar, A.
name: Pollmann, T.
name: Portaluppi, D.
name: Pugachev, D. A.
name: Qian, H.
name: Radics, B.
name: Raffaelli, F.
name: Ragusa, F.
name: Razeti, M.
name: Razeto, A.
name: Regazzoni, V.
name: Regenfus, C.
name: Reinhold, B.
name: Renshaw, A. L.
name: Rescigno, M.
name: Retière, F.
name: Riffard, Q.
name: Rivetti, A.
name: Rizzardini, S.
name: Romani, A.
name: Romero, L.
name: Rossi, B.
name: Rossi, N.
name: Rubbia, A.
name: Sablone, D.
name: Salatino, P.
name: Samoylov, O.
name: García, E. Sánchez
name: Sands, W.
name: Sant, M.
name: Santorelli, R.
name: Savarese, C.
name: Scapparone, E.
name: Schlitzer, B.
name: Scioli, G.
name: Segreto, E.
name: Seifert, A.
name: Semenov, D. A.
name: Shchagin, A.
name: Shekhtman, L.
name: Shemyakina, E.
name: Sheshukov, A.
name: Simeone, M.
name: Singh, P. N.
name: Skensved, P.
name: Skorokhvatov, M. D.
name: Smirnov, O.
name: Sobrero, G.
name: Sokolov, A.
name: Sotnikov, A.
name: Speziale, F.
name: Stainforth, R.
name: Stanford, C.
name: Suffritti, G. B.
name: Suvorov, Y.
name: Tartaglia, R.
name: Testera, G.
name: Tonazzo, A.
name: Tosi, A.
name: Trinchese, P.
name: Unzhakov, E. V.
name: Vacca, A.
name: Vázquez-Jáuregui, E.
name: Verducci, M.
name: Viant, T.
name: Villa, F.
name: Vishneva, A.
name: Vogelaar, B.
name: Wada, M.
name: Wahl, J.
name: Walding, J.
name: Walker, S.
name: Wang, H.
name: Wang, Y.
name: Watson, A. W.
name: Westerdale, S.
name: Williams, R.
name: Wojcik, M. M.
name: Wu, S.
name: Xiang, X.
name: Xiao, X.
name: Yang, C.
name: Ye, Z.
name: de Llano, A. Yllera
name: Zappa, F.
name: Zappalà, G.
name: Zhu, C.
name: Zichichi, A.
name: Zullo, M.
name: Zullo, A.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences
subject: FOS: Physical sciences

description: Building on the successful experience in operating the DarkSide-50 detector, the DarkSide Collaboration is going to construct DarkSide-20k, a direct WIMP search detector using a two-phase Liquid Argon Time Projection Chamber (LArTPC) with an active (fiducial) mass of 23 t (20 t). The DarkSide-20k LArTPC will be deployed within a shield/veto with a spherical Liquid Scintillator Veto (LSV) inside a cylindrical Water Cherenkov Veto (WCV). Operation of DarkSide-50 demonstrated a major reduction in the dominant $^{39}$Ar background when using argon extracted from an underground source, before applying pulse shape analysis. Data from DarkSide-50, in combination with MC simulation and analytical modeling, shows that a rejection factor for discrimination between electron and nuclear recoils of $\gt3\times10^9$ is achievable. This, along with the use of the veto system, is the key to unlocking the path to large LArTPC detector masses, while maintaining an "instrumental background-free" experiment, an experiment in which less than 0.1 events (other than $ν$-induced nuclear recoils) is expected to occur within the WIMP search region during the planned exposure. DarkSide-20k will have ultra-low backgrounds than can be measured in situ. This will give sensitivity to WIMP-nucleon cross sections of $1.2\times10^{-47}$ cm$^2$ ($1.1\times10^{-46}$ cm$^2$) for WIMPs of $1$ TeV$/c^2$ ($10$ TeV$/c^2$) mass, to be achieved during a 5 yr run producing an exposure of 100 t yr free from any instrumental background. DarkSide-20k could then extend its operation to a decade, increasing the exposure to 200 t yr, reaching a sensitivity of $7.4\times10^{-48}$ cm$^2$ ($6.9\times10^{-47}$ cm$^2$) for WIMPs of $1$ TeV$/c^2$ ($10$ TeV$/c^2$) mass.