One of our colleagues characterized the overall photon detection efficiency of the Timepix+intensifier system to be 8%. See
Vidyapin, V., Zhang, Y., England, D. et al. Characterisation of a single photon event camera for quantum imaging. Sci Rep 13, 1009 (2023).
I understand that even though the photocathode inside the intensifier has a much higher quantum efficiency, other factors could be at play. Can ASI comment on the low overall efficiency of the Timepix system and is there a way to improve this?