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arXiv · 0704.2037

A CF3I-based SDD Prototype for Spin-independent Dark Matter Searches

T. Morlata·M. Felizardo·F. Giuliani·TA Girard·G. Waysand·R. F. Payne·H. S. Miley·A. R. Ramos·J. G. Marques·R. C. Martins·D. Limagne
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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 liter 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.

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T. Morlata, M. Felizardo, F. Giuliani, TA Girard, G. Waysand, R. F. Payne, H. S. Miley, A. R. Ramos, J. G. Marques, R. C. Martins, D. Limagne. 2008-08-26. A CF3I-based SDD Prototype for Spin-independent Dark Matter Searches. https://arxiv.org/abs/0704.2037

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