DarkSide: Latest results and future perspectives
DarkSide is direct-detection dark-matter experimental project based on radiopure argon. The main goal of the DarkSide program is the detection of rare nuclear elastic collisions with hypothetical dark-matter particles. The present detector, DarkSide-50, placed at Laboratori Nazionali del Gran Sasso (LNGS), is a dualphase time projection chamber (TPC) filled with ultra-pure liquid argon, extracted from underground sources. Surrounding the TPC to suppress the background there are neutron and muon active vetoes. One of argon key features is the capability to distinguish between electron and nuclear recoils, exploiting the different shapes of the signals. DarkSide-50 new results, obtained using a live-days exposure of 532.4 days, are presented. This analysis sets a 90% C.L. upper limit on the dark matter-nucleon spin-independent cross-section of 1.1 × 10-44 cm2 for a WIMP mass of 100 GeV/c2. The next phase of the project, DarkSide-20k, will be a new detector with a fiducial mass of ~ 20 tons, equipped with cryogenic silicon photomultipliers (SiPM).
- Research Organization:
- Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), High Energy Physics (HEP)
- Contributing Organization:
- DarkSide
- DOE Contract Number:
- AC02-07CH11359
- OSTI ID:
- 1843441
- Report Number(s):
- FERMILAB-CONF-19-787-ND-PPD-SCD; oai:inspirehep.net:1768493
- Journal Information:
- Il Nuovo Cimento C, Vol. 42, Issue 4; Conference: IFAE 2018; ISSN 2037-4909
- Publisher:
- Societa italiana di fisica (Italian Physical Society)
- Country of Publication:
- United States
- Language:
- English
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The Electronics and Data Acquisition System of the DarkSide Dark Matter Search
First results from the DarkSide-50 dark matter experiment at Laboratori Nazionali del Gran Sasso