Research output: Contribution to journal › Article › peer-review
DarkSide-20k: A 20 tonne two-phase LAr TPC for direct dark matter detection at LNGS. / The Darkside Collaboration.
In: European Physical Journal Plus, Vol. 133, No. 3, 131, 29.03.2018.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - DarkSide-20k: A 20 tonne two-phase LAr TPC for direct dark matter detection at LNGS
AU - The Darkside Collaboration
AU - Aalseth, C. E.
AU - Acerbi, F.
AU - Agnes, P.
AU - Albuquerque, I. F.M.
AU - Alexander, T.
AU - Alici, A.
AU - Alton, A. K.
AU - Antonioli, P.
AU - Arcelli, S.
AU - Ardito, R.
AU - Arnquist, I. J.
AU - Asner, D. M.
AU - Ave, M.
AU - Back, H. O.
AU - Barrado Olmedo, A. I.
AU - Batignani, G.
AU - Bertoldo, E.
AU - Bettarini, S.
AU - Bisogni, M. G.
AU - Bocci, V.
AU - Bondar, A.
AU - Bonfini, G.
AU - Bonivento, W.
AU - Bossa, M.
AU - Bottino, B.
AU - Boulay, M.
AU - Bunker, R.
AU - Bussino, S.
AU - Buzulutskov, A.
AU - Cadeddu, M.
AU - Cadoni, M.
AU - Caminata, A.
AU - Canci, N.
AU - Candela, A.
AU - Cantini, C.
AU - Caravati, M.
AU - Cariello, M.
AU - Carlini, M.
AU - Carpinelli, M.
AU - Castellani, A.
AU - Catalanotti, S.
AU - Cataudella, V.
AU - Cavalcante, P.
AU - Cavuoti, S.
AU - Cereseto, R.
AU - Chepurnov, A.
AU - Cicalò, C.
AU - Dolgov, A.
AU - Shekhtman, L.
AU - Sokolov, A.
N1 - Funding Information: The DarkSide Collaboration would like to thank LNGS and its staff for invaluable technical and logistical support. This report is based upon work supported by the U. S. National Science Foundation (NSF) (Grants No. PHY-0919363, No. PHY-1004054, No. PHY-1004072, No. PHY-1242585, No. PHY-1314483, No. PHY-1314507, associated collaborative grants, No. PHY-1211308, No. PHY-1314501, No. PHY-1455351 and No. PHY-1606912, as well as Major Research Instrumentation Grant No. MRI-1429544), the Italian Istituto Nazionale di Fisica Nucleare (Grants from Italian Ministero dell’Istruzione, Università, e Ricerca Progetto Premiale 2013 and Commissione Scientific Nazionale II). We acknowledge the financial support from the UnivEarthS Labex program of Sorbonne Paris Cité (Grants ANR-10-LABX-0023 and ANR-11-IDEX-0005-02), the São Paulo Research Foundation (Grant FAPESP-2016/09084-0), and the Russian Science Foundation (Grant No. 16-12-10369 and Grant No. 16-19-10535). The authors were also supported by the “Unidad de Excelencia María de Maeztu: CIEMAT - Física de partículas” (Grant MDM-2015-0509) and the Polish National Science Centre (Grant No. UMO-2014/15/B/ST2/02561) and the Foundation for Polish Science (Grant No. TEAM/2016-2/17). We also wish to acknowledge the support from Pacific Northwest National Laboratory, which is operated by Battelle for the U.S. Department of Energy under Contract No. DE-AC05-76RL01830. Funding Information: Design of the plant started in April 2015 with seed funding from the US NSF through PHY-1314507. Aria is to be installed in underground vertical shafts of diameter 5 m and depth 350 m, located at the Seruci mine campus of CarboSulcis, a mining company owned by the Regione Autonoma della Sardegna (RAS). In February 2015 a proposal was submitted to the Italian INFN and RAS, and the funding for the Seruci-I column was approved on July 24, 2015. Construction of Seruci-I started in September 2015 in Italy. Publisher Copyright: © Societá Italiana di Fisica/Springer-Verlag 2018.
PY - 2018/3/29
Y1 - 2018/3/29
N2 - 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 X 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 γ-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 1.2x10 -47 cm2 (1.1x10 -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.
AB - 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 X 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 γ-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 1.2x10 -47 cm2 (1.1x10 -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.
KW - INTERACTING MASSIVE PARTICLES
KW - SOLAR-NEUTRINO EXPERIMENT
KW - DEL GRAN SASSO
KW - LIQUID-ARGON
KW - VAPOR-PRESSURE
KW - SCINTILLATION EFFICIENCY
KW - THERMODYNAMIC PROPERTIES
KW - ISOTOPIC LIQUIDS
KW - SEARCH
KW - BOREXINO
UR - http://www.scopus.com/inward/record.url?scp=85045551655&partnerID=8YFLogxK
U2 - 10.1140/epjp/i2018-11973-4
DO - 10.1140/epjp/i2018-11973-4
M3 - Article
AN - SCOPUS:85045551655
VL - 133
JO - European Physical Journal Plus
JF - European Physical Journal Plus
SN - 2190-5444
IS - 3
M1 - 131
ER -
ID: 12669258