September 30, 2014 to October 3, 2014
C.U.M.O. Noto (SR), Italy
Europe/Rome timezone
RICAP-14 The Roma International Conference on Astroparticle Physics in Noto, Sicily, Italy


Sep 30, 2014, 4:35 PM
Aula A, first floor (C.U.M.O. Noto (SR), Italy)

Aula A, first floor

C.U.M.O. Noto (SR), Italy


Biagio Rossi (NA)


DarkSide-50 (DS-50) at Gran Sasso underground laboratory, Italy, is a direct dark matter search experiment based on a TPC with liquid argon from underground sources. The DS-50 TPC, with 50 kg of active argon and a projected fiducial mass of >33 kg, is installed inside an active neutron veto based on a boron-loaded organic scintillator. The neutron veto is built inside a water cherenkov muon veto. DS-50 has been taking data since Nov 2013, collecting more than 2e7 events with atmospheric argon. This data represents an exposure to the largest background, beta decays of Ar-39, comparable to the full three-year run planned for DS-50 with underground argon. When analyzed with a threshold that would give a sensitivity in the full run of about 1e-45 cm^2 at a WIMP mass of 100 GeV/c^2, there is no Ar-39 background observed. The detector design and performance will be presented as well as results from the atmospheric argon run still in progress.

Primary author

Presentation materials