The DarkSide awakens

[摘要] The DarkSide program at LNGS aims to perform background-free WIMP searches using two phase liquid argon time projection chambers, with the ultimate goal of covering all parameters down to the so-called neutrino floor. One of the distinct features of the program is the use of underground argon with has a reduced content of the radioactive39Ar compared to atmospheric argon. The DarkSide Collaboration is currently operating the DarkSide-50 experiment, the first such WIMP detector using underground argon. Operations with underground argon indicate a suppression of39Ar by a factor (1.4 ± 0.2) ×103relative to atmospheric argon. The new results obtained with DarkSide-50 and the plans for the next steps of the DarkSide program, the 20t fiducial mass DarkSide-20k detector and the 200 t fiducial Argo, are reviewed in this proceedings.

[发布机构] APC, Université Paris Diderot, CNRS/IN2P3, CEA/Irfu, Obs de Paris, Sorbonne Paris Cité, Paris; 75205, France^1;LPNHE Paris, Université Pierre et Marie Curie, Université Paris Diderot, CNRS/IN2P3, Paris; 75252, France^2;Department of Physics, Princeton University, Princeton; NJ; 08544, United States^3;Instituto de Física, Universitade de São Paulo, São Paulo; 05508-090, Brazil^4;Amherst Center for Fundamental Interactions, Department of Physics, University of Massachusetts, Amherst; MA; 01003, United States^5;Fermi National Accelerator Laboratory, Batavia; IL; 60510, United States^6;Department of Physics, Augustana University, Sioux Falls; SD; 57197, United States^7;Department of Physics and Astronomy, University of California, Los Angeles; CA; 90095, United States^8;Pacific Northwest National Laboratory, Richland; WA; 99354, United States; (10) Laboratori Nazionali Del Gran Sasso, Assergi AQ; 67010, Italy; (11) Gran Sasso Science Institute, L'AQUILA; 67100, Italy; (12) Department of Physics, Università degli Studi, Genova; 16146, Italy; (13) Istituto Nazionale di Fisica Nucleare, Sezione di Genova, Genova; 16146, Italy; (14) Istituto Nazionale di Fisica Nucleare, Sezione di Milano, Milano; 20133, Italy; (15) Istituto Nazionale di Fisica Nucleare, Sezione di Roma Tre, Roma; 01646, Italy; (16) Department of Physics and Mathematics, Università degli Studi Roma Tre, Roma; 01646, Italy; (17) Department of Physics, Università degli Studi, Cagliari; 09042, Italy; (18) Istituto Nazionale di Fisica Nucleare, Sezione di Cagliari, Cagliari; 09042, Italy; (19) Department of Physics, University of Houston, Houston; TX; 77204, United States; (20) Istituto Nazionale di Fisica Nucleare, Sezione di Napoli, Napoli; 80126, Italy; (21) Department of Physics, Università degli Studi Federico II, Napoli; 80126, Italy; (22) Department of Physics, Virginia Tech, Blacksburg; VA; 24061, United States; (23) Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, Moscow; 119991, Russia; (24) Department of Physics, Università degli Studi, Milano; 20133, Italy; (25) St. Petersburg Nuclear Physics Institute NRC, Kurchatov Institute, Gatchina; 188350, Russia; (26) Department of Physics and Astronomy, University of Hawai'i, Honolulu; HI; 96822, United States; (27) Joint Institute for Nuclear Research, Dubna; 141980, Russia; (28) Department of Physics, Temple University, Philadelphia; PA; 19122, United States; (29) Kavli Institute, Enrico Fermi Institute, Dept. of Physics, University of Chicago, Chicago; IL; 60637, United States; (30) Institute for High Energy Physics, Beijing; 100049, China; (31) Laboratorio Subterráneo de Canfranc, Canfranc Estación; E-22880, Spain; (32) IPHC, 19 Université de Strasbourg, CNRS/IN2P3, Strasbourg; 67037, France; (33) School of Natural Sciences, Black Hills State University, Spearfish; SD; 57799, United States; (34) Institute for National Research, National Academy of Sciences of Ukraine, Kiev; 03680, Ukraine; (35) Radiation Physics Laboratory, Belgorod National Research University, Belgorod; 308007, Russia; (36) SLAC National Accelerator Laboratory, Menlo Park; CA; 94025, United States; (37) National Research Centre Kurchatov Institute, Moscow; 123182, Russia; (38) National Research Nuclear University MEPhI, Moscow; 115409, Russia; (39) Department of Chemistry, Biology and Biotechnology, Università degli Studi, Perugia; 06123, Italy; (40) Istituto Nazionale di Fisica Nucleare, Sezione di Perugia, Perugia; 06123, Italy; (41) Department of Physics, University of California, Davis; CA; 95616, United States; (42) Smoluchowski Institute of Physics, Jagiellonian University, Krakow; 30059, Poland; (43) Lawrence Livermore National Laboratory, Livermore; CA; 94550, United States; (44) Institute of Physics Gleb Wataghin Universidade Estadual de Campinas, São Paulo; 13083-859, Brazil; (45) School of Physics, University of Chinese Academy of Sciences, Beijing; 100049, China^9

[效力级别] 天文学 [学科分类] 天文学(综合)

[关键词] Atmospheric argon;New results;Time projection chambers;Two-phase liquid