Simulation of Special Bubble Detectors for PICASSO
The PICASSO Collaboration, G. Azuelos, M. Barnabe-Heider, E. Behnke, K. Clark, M. Di Marco, P. Doane, W. Feighery, M-H. Genest, R. Gornea, R. Guenette, S. Kanagalingam, C. Krauss, C. Leroy, L. Lessard, I. Levine, J. P. Martin, A. J. Noble, R. Noulty, S. N. Shore, U. Wichoski, V . Zacek
Abstract
The PICASSO project is a cold dark matter (CDM) search experiment relying on the superheated droplet technique. The detectors use superheated freon liquid droplets (active material) dispersed and trapped in a polymerized gel. This detection technique is based on the phase transition of superheated droplets at about room temperature and ambient pressure. The phase transition is induced by nuclear recoils when an atomic nucleus in the droplets interacts with incoming subatomic particles. This includes CDM particles candidate as the neutralino (a yet-to-discover particle predicted in extensions of the Standard Model of particle physics). Simulations performed to understand the detector response to neutrons and alpha particles are presented along with corresponding data obtained at the Montreal Laboratory.
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