Radiation effects on astrometric CCDs at low operating temperatures

  title={Radiation effects on astrometric CCDs at low operating temperatures},
  author={G R Hopkinson and Andrew Short and C. Vetel and Igor Zayer and A. Holland},
  journal={IEEE Transactions on Nuclear Science},
Emission times of proton-induced traps and optical spot profiles have been measured at temperatures around -110/spl deg/C for large format charge-coupled devices (CCDs), representative of those to be used for the Gaia mission. There are at least seven trap species involved, with emission times in the range 0.3 /spl mu/s to 130 s and there is evidence for charge re-trapping by fast traps. Trap filling using a charge injection gate is discussed. 


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