Page History
...
All marked pixels are removed from further analysis
Run 898 dark rate for high gain mode
...
and the dark rate difference between low and high gain runs 898-907
...
: 
Run 899 transm=0.1 (dark rate is subtracted using r898)
...
Run 907 dark image for low gain
run 908 dark image for low gain (dark rate is subtracted using r907)
...
, difference between two dark rate images
Run 909 transm=1 low gain (dark rate is subtracted using r907)
...
Run numbers are shown in histogram titles:
Bad pixels are removed. Top-left plot has a peak at "0", which arose in the difference of two ~820x820 plots from regions between ASICs.
The difference between dark image amplitudes at High and Low gain mode is ~155 ADC units.
Comparison of runs 899 and 904 (transm.=0.1) gives the gain ratio High/Low = 495/66 = 7.5
Comparison of runs 902 and 903 (transm.=0.05) gives the gain ratio High/Low = 26/4.5 = 5.8. So, the gain is not a lilear function of intensity...
Overview
Content Tools