DESI-GFA testbench facilities for CCDs characterization

The DESI-GFA subsystem, used for Guiding, Focusing and Alignment, is one of the key parts for the DESI instrument (The Dark Energy Spectroscopic Instrument), planned for the Mayall 4-meter telescope at Kitt Peak National Observatory, Arizona, U.S. On this paper are presented the test bench facilities developed for the characterization of an e2v CCD230-42 CCD which is expected to be used at room temperature on each one of the ten small cameras composing the DESI-GFA system.