I noticed that the pixel size of the camera SDB2_B1s2_Cam set in the configuration of DET_Img_CEB is wrong. It is currently defined as 5.2 um (the pixel size of the Smartek CMOS  GC1281XM-S90-NoCG). However this camera is not a CMOS one. Instead this camera is a Smarteck CCD GC1392M-A90-NoCG, for which the pixel size is 6.45 um.

The consequence of this mistake is that the beam size extracted from the camera images is underestimated by a factor 5.2/6.45 = 0.806 (almost 20%).

This mistake is probably present since 09/07/2019 when the B1s2 camera was replaced ( https://logbook.virgo-gw.eu/virgo/?r=46309 ).

We will fix this mistake next week when we will have the opportunity to restart the process DET_Img_CEB.