Persistence and charge diffusion in an E2V CCD42-90 deep-depletion CCD

摘要

The ESPaDOnS spectrograph at the Canada-France-Hawaii Telescope was recently upgraded to use an E2V CCD42-90deep-depletion CCD. While changing to this device from a standard silicon CCD42-90 had many benefits such as muchhigher red QE and much lower fringing, it was also found that the new device exhibited persistence. After talking withE2V, a solution to the persistence was found, but this resulted in reduced resolution on the spectrograph from chargediffusion. This paper will describe the solution found to allow the detector to run with no persistence and with limitedcharge diffusion.© (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.