Speaker
Mr
Davide D'Angelo
(Univ. degli Studi di Milano e INFN)
Description
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.
Plans for the underground argon run and for a ton-scale detector
within the same neutron veto vessel will be presented.
Primary author
Mr
Davide D'Angelo
(Univ. degli Studi di Milano e INFN)
