Tuning of avalanche photodiode PET camera

The procedures and algorithms being developed to adjust and verify the detector bias, the noise and energy thresholds, the signal references, and the timing delays for the Sherbrooke positron emission tomograph (PET) are discussed. All settings are adjusted using a sequence of iterative tuning algorithms whose convergence is optimized for each parameter. Preliminary results show that the complete calibration can be carried out automatically and reliably overnight, and that specific checks can be performed in a few tens-of-seconds as needed