DarkSide-20k: A 20 tonne two-phase LAr TPC for direct dark matter detection at LNGS
Journal Article
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· European Physical Journal Plus
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- BATTELLE (PACIFIC NW LAB)
- Fondazione Bruno Kessler
- University of Houston
- Universidade de Sao Paulo
- Universita di Bologna
- Augustana College
- INFN-Bologna
- Politecnico di Milano
- CIEMAT Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas
- Universita di Pisa
- INFN Milano Bicocca
- INFN Sezione di Pisa
- Universita Degli Studi Di Pisa
- Darkside collaboration
- Novosibirsk State University
- Laboratori Nazionali del Gran Sasso
- Carkside Collaboration
- Gran Sasso Science Institute
- Istituto Nazionale di Fisica Nucleare, Sezione di Genova
- Carleton University
- Universita degli Studi Roma Tre
- Budker Institute of Nuclear Physics
- Universita DI Cagliari
- INFN Genova Genova, Italy
- Institute for Particle Physics, ETH Zürich
- Darkside Collaboration
- Universita Degli Studi di Genova
- INFN Milano
- Universita degli Studi di Napoli Frederico II
- INFN, Sezione di Napoli
- INFN Napoli
- INFN - Genova
- Moscow State University
- INFN Bologna
- Universita Degli Studi di Sassari
- INFN Torino
- CIEMATCentro de Investigaciones Energéticas, Medioambientales y Tecnológicas
- INFN
- Universite de Paris VI (Pierre et Marie Curie)
- Saint Petersburg Nuclear Physics Institute
- Princeton University
- National Institute for R&D of Isotopic and Molecular Technologies
- Joint Institute for Nuclear Research
- Universite de Paris VII (Denis Diderot)
- University of Crete
- INFN Milano, Milano, Italy
- CIEMAT
- Institute for Particle Physics
- Triumf
- Temple University
- INFN Pisa
- National Research Centre Kurchatov Institute
- Institute of High Energy Physics
- Black Hills State University
- INFN Laboratori Nazionali del Sud
- Fort Lewis College
- Queen's University (Ontario)
- INFN Cagliari
- Laurentian University of Sudbury
- University of California, Davis
- Fermi National Accelerator Laboratory,
- Belgorod National Research University
- University of Alberta
- INFN Sezione di Roma
- Universidade Estadual de Campinas
- Universita Degli Studi Di Trento
- University of Hawaii
- University of London
- University of Massachusetts at Amherst
- ETH Zurich
- Physics Department, Universit degli Studi - Genova
- INFN Bologna, Italy
- Radiation Physics Laboratory, Belgorod National Research University
- Budker Institute of Nuclear Physics, Russia
- National Research Centre Kurchatov Institute, Rusia
- Radiaition Physics Laboratory, Belgorod University
- Universit degli Studi and INFN, 16146 Genova, Italy
- INFN, Laboratori Nazionali del Gran Sasso, Assergi, Italy
- Fondazione Bruno Kessler, Povo 38123, Italy
- Lomonosov Moscow State University
- University of Sussex
- Uniwersytet Jagiellonski
- INFN Pisa, Pisa, Italy
- Universita degli Studi di Perugia
- INFN Laboratori Nazionali del Gran Sasso, Italy
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas
- INFN Pisa, Italy
- Universita degli studi di Milano
- INFN- Cagliari
- University of California, Los Angeles
- INFN Gran Sasso
- TRIUMF
- Fermi National Accelerator Laboratory
- National Research Centre, Kurchatov Institute, Russia
- Joint Institute for Nuclear Research, Russia
- INFN Genova
- INFN Laboratori Nazionali del Sud, Italy
- Laboratori Nazionali del Gran Sasso, Italy
- Universita Degli Studi, Cagliari, Italy
- SNOLAB
- Universita Degli Studi di Roma La Sapienza
- Joint Institute for Nuclear Research, Dubna, Russia
- Virginia Polytechnic Institute
- Harvard University
- Institute of High Energy Physics CAS, China
- CIEMAT, Madrid, Spain
- INFN Milano, Italy
- INFN Sezione di Roma, Italy
Abstract. 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 (LAr TPC) with an active (fiducial) mass of 23 t (20 t). This paper describes a preliminary design for the experiment, in which the DarkSide-20k LAr TPC is deployed within a shield/veto with a spherical Liquid Scintillator Veto (LSV) inside a cylindrical Water Cherenkov Veto (WCV). This preliminary design provides a baseline for the experiment to achieve its physics goals, while further development work will lead to the final optimization of the detector parameters and an eventual technical design. Operation of DarkSide-50 demonstrated a major reduction in the dominant 39Ar 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 > 3 × 109 is achievable. This, along with the use of the veto system and utilizing silicon photomultipliers in the LAr TPC, are the keys to unlocking the path to large LAr TPC detector masses, while maintaining an experiment in which less than < 0.1 events (other than ?-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, giving sensitivity to WIMP-nucleon cross sections of 1.2×10 -47 cm2 (1.1×10 -46 cm2) for WIMPs of 1TeV/c2 (10TeV/c2) mass, to be achieved during a 5 yr run producing an exposure of 100 t yr free from any instrumental background.
- Research Organization:
- Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC05-76RL01830
- OSTI ID:
- 1719103
- Report Number(s):
- PNNL-SA-134133
- Journal Information:
- European Physical Journal Plus, Journal Name: European Physical Journal Plus Journal Issue: 3 Vol. 133
- Country of Publication:
- United States
- Language:
- English
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