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IDM2008 - Identification of Dark Matter 2008
IDM2008 - Identification of Dark Matter 2008
18-22 August 2008 AlbaNova
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The PICASSO Dark Matter Search (15'+5')
PICASSO is an array of bubble detectors constructed to search for spin
dependent interactions of weakly interacting massive particles. The
bubble detectors are similar to those used in neutron dosimetry:
superheated droplets of fluorocarbon (C4F10) are suspended in a
polymerized gel, where a nucleus recoiling from the elastic scattering
of a WIMP triggers the boiling of the superheated liquid. The
explosive expansion of a droplet to a bubble will induce an acoustic
wave in the gel which is picked up with piezoelectric sensors. The
PICASSO collaboration has developed large volume bubble detectors of
4.5 litres. The performance of these detectors has been evaluated with
several methods. The detectors are installed at SNOLAB, located at a
depth of 2070 meters in the Creighton mine in Sudbury. The completed
setup contains 32 detectors with a combined active mass of 2.6 kg. New
exclusion limits on the WIMP cross section will be presented, based on
data from the first of the large detectors.
Id: 395
Place: AlbaNova
Room: Oskar Klein auditorium
Starting date:
19-Aug-2008   08:30
Duration: 20'
Contribution type: Talk
Primary Authors: DAVOUR, Anna (Queen's University)
Presenters: DAVOUR, Anna
Material: slide Slides
Included in session: Direct detection - experiments
Included in track: Direct detection - experiments

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