Speaker
Description
The VIS instrument onboard the Euclid space telescope (which launched in 2023) is the first in-orbit instrument to include trap pumping as part of its calibration routines to assist with the correction of image distortions due to charge transfer inefficiency (CTI) caused by charge trap defects. Trap pumping is a method to identify individual charge trap defects in a CCD, allowing the sub-pixel location and emission time constant to be determined.
This work presents a further study of this trap pumping data focusing on how the trap defects created by the radiation environment of Euclid compare to the pre-launch testing and predictions. It also explores the unexplored behaviour found of some individual trap defects when observed over a long period of time.