Author/Authors :
Morlat، نويسنده , , T. and Felizardo، نويسنده , , M. Vittoria Giuliani، نويسنده , , F. and Girard، نويسنده , , T.A. and Waysand، نويسنده , , G. and Payne، نويسنده , , R.F. and Miley، نويسنده , , H.S. and Ramos، نويسنده , , A.R. and Marques، نويسنده , , J.G. and Martins، نويسنده , , R.C. and Limagne، نويسنده , , D.، نويسنده ,
Abstract :
The application of superheated droplet detectors (SDDs) to dark matter searches has so far been confined to the light nuclei refrigerants C2ClF5 and C4F10 (SIMPLE and PICASSO, respectively), with a principle sensitivity to spin-dependent interactions. Given the competitive results of these devices, as a result of their intrinsic insensitivity to backgrounds, we have developed a prototype trifluoroiodomethane (CF3I)-loaded SDD with increased sensitivity to spin-independent interactions as well. A low (0.102 kgd) exposure test operation of two high concentration, 1 l devices is described, and the results compared with leading experiments in both spin-dependent and -independent sectors. Although competitive in both sectors when the difference in exposures is accounted for, a problem with fracturing of the detector gel must be addressed before significantly larger exposures can be envisioned.
