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AGjDPG: Arbeitsgruppe junge DPG

AGjDPG 6: Dark matter physics - an insight into various experiments (with T)

AGjDPG 6.2: Invited Talk

Thursday, March 7, 2013, 17:15–17:45, HSZ-103

The PICASSO experiment - searching for cold dark matter — •Robert Filgas — Czech Technical University in Prague

The PICASSO experiment (Project In CAnada to Search for Supersymmetric Objects) specializes in searches for cold dark matter through the direct detection of Weakly Interacting Massive Particles (WIMPs). It uses the superheated droplet technique, which is based on the operation principle of the classic bubble chamber. In the case of PICASSO the active detector liquid is dispersed as droplets of a metastable superheated perfluorobutane, C4F10, and the detectors are operated in a temperature range such that nuclear recoils in the keV range induced by interactions with WIMPS could trigger bubble formation. These explosive evaporations are accompanied by acoustic signals, which are recorded by piezoelectric transducers. I will present details of the PICASSO experiment and the first results obtained by the detector located at the underground laboratory of the Sudbury Neutrino Observatory.