European Physical Journal C: Particles and Fields (May 2020)

Theia: an advanced optical neutrino detector

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

DOI
https://doi.org/10.1140/epjc/s10052-020-7977-8
Journal volume & issue
Vol. 80, no. 5
pp. 1 – 31

Abstract

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Abstract 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 $$\delta $$ 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.