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Figure 14
The probability to detect a photon within Spots 1, 2 and 4 varied as a function of time. That probability can be considered as the time-dependent variation of QDE, decreasing within each acquisition frame due to the Timepix one photon per pixel limitation in timing mode. After readout, the probability of detecting a photon is reset to its original value. (a) Acquisition frames of 9.68 ms, (b) acquisition frames of 1.1 ms showing smaller QDE degradation for bright Spot 1. No QDE degradation is observed for Spot 2 with lower incoming flux. The dashed curve in (b) represents the relative QDE variation after correction according to Tremsin et al. (2014BB33) and is applied to the raw data.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 28| Part 4| July 2021| Pages 1069-1080
https://doi.org/10.1107/S1600577521003908
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