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Theia: an advanced optical neutrino detector

  • Author(s): Askins, M
  • Bagdasarian, Z
  • Barros, N
  • Beier, EW
  • Blucher, E
  • Bonventre, R
  • Bourret, E
  • Callaghan, EJ
  • Caravaca, J
  • Diwan, M
  • Dye, ST
  • Eisch, J
  • Elagin, A
  • Enqvist, T
  • Fischer, V
  • Frankiewicz, K
  • Grant, C
  • Guffanti, D
  • Hagner, C
  • Hallin, A
  • Jackson, CM
  • Jiang, R
  • Kaptanoglu, T
  • Klein, JR
  • Kolomensky, YG
  • Kraus, C
  • Krennrich, F
  • Kutter, T
  • Lachenmaier, T
  • Land, B
  • Lande, K
  • Learned, JG
  • Lozza, V
  • Ludhova, L
  • Malek, M
  • Manecki, S
  • Maneira, J
  • Maricic, J
  • Martyn, J
  • Mastbaum, A
  • Mauger, C
  • Moretti, F
  • Napolitano, J
  • Naranjo, B
  • Nieslony, M
  • Oberauer, L
  • Orebi Gann, GD
  • Ouellet, J
  • Pershing, T
  • Petcov, ST
  • Pickard, L
  • Rosero, R
  • Sanchez, MC
  • Sawatzki, J
  • Seo, SH
  • Smiley, M
  • Smy, M
  • Stahl, A
  • Steiger, H
  • Stock, MR
  • Sunej, H
  • Svoboda, R
  • Tiras, E
  • Trzaska, WH
  • Tzanov, M
  • Vagins, M
  • Vilela, C
  • Wang, Z
  • Wang, J
  • Wetstein, M
  • Wilking, MJ
  • Winslow, L
  • Wittich, P
  • Wonsak, B
  • Worcester, E
  • Wurm, M
  • Yang, G
  • Yeh, M
  • Zimmerman, ED
  • Zsoldos, S
  • Zuber, K
  • et al.
Abstract

© 2020, The Author(s). New developments in liquid scintillators, high-efficiency, fast photon detectors, and chromatic photon sorting have opened up the possibility for building a large-scale detector that can discriminate between Cherenkov and scintillation signals. Such a detector could reconstruct particle direction and species using Cherenkov light while also having the excellent energy resolution and low threshold of a scintillator detector. Situated deep underground, and utilizing new techniques in computing and reconstruction, this detector could achieve unprecedented levels of background rejection, enabling a rich physics program spanning topics in nuclear, high-energy, and astrophysics, and across a dynamic range from hundreds of keV to many GeV. The scientific program would include observations of low- and high-energy solar neutrinos, determination of neutrino mass ordering and measurement of the neutrino CP-violating phase δ, observations of diffuse supernova neutrinos and neutrinos from a supernova burst, sensitive searches for nucleon decay and, ultimately, a search for neutrinoless double beta decay, with sensitivity reaching the normal ordering regime of neutrino mass phase space. This paper describes Theia, a detector design that incorporates these new technologies in a practical and affordable way to accomplish the science goals described above.

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