Cryogenic design of the EMCCD cameras for the Brazilian tunable filter imager

In this paper we present the cryogenic design of the EMCCD (Electron Multiplication Charged Couple Device) cameras for the Brazilian Tunable Filter Imager instrument for the 4 meters SOAR telescope in Chile. The camera uses a E2V 1600 × 1600 pixels full-frame device, which is controlled by the new CCCP (CCD Controller for Counting Photons), an EMCCD controller developed by the University of Montreal. We present the design of the camera, its thermal analysis and cryogenic performance.