As reference, photon yield measurements were taken using the VATA64 front-end electronics and the USB board interface. The photon yield distribution is a convolution between a gaussian and a Landau. At high overvoltage, it shows peaks which are caused by saturation of the electronics. The most probable value of the distribution (MPV) is chosen as a figure of merit for the photon yield. It was measured on a BGV SciFi module prototype injecting the signal at different places. Attenuation in the fibres makes the MPV decrease (linearly in this case) with the distance to the SiPM. The addition of a mirror at the end of the fibres enables to increase the photon yield to typically 30 photons and to make it more uniform. | ![]() |
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BGVmodul07-4L FEBoard-R pedestal | BGVmodul07-4L FEBoard-S pedestal | BGVmodul07-4L FEBoard-T pedestal | BGVmodul07-4L FEBoard-U pedestal |
BGVmodul07-4L FEBoard-R darktest | BGVmodul07-4L FEBoard-S darktest | BGVmodul07-4L FEBoard-T darktest | BGVmodul07-4L FEBoard-U darktest |
BGVmodul07-4L FEBoard-R scantest | BGVmodul07-4L FEBoard-S scantest | BGVmodul07-4L FEBoard-T scantest | BGVmodul07-4L FEBoard-U scantest |
BGVmodul08-4L FEBoard-R pedestal | BGVmodul08-4L FEBoard-S pedestal | BGVmodul08-4L FEBoard-T pedestal | BGVmodul08-4L FEBoard-U pedestal |
BGVmodul08-4L FEBoard-R darktest | BGVmodul08-4L FEBoard-S darktest | BGVmodul08-4L FEBoard-T darktest | BGVmodul08-4L FEBoard-U darktest |
BGVmodul08-4L FEBoard-R scantest | BGVmodul08-4L FEBoard-S scantest | BGVmodul08-4L FEBoard-T scantest | BGVmodul08-4L FEBoard-U scantest |
BGVmodul2 FEBoard-R pedestal | BGVmodul2 FEBoard-S pedestal | BGVmodul2 FEBoard-T pedestal | BGVmodul2 FEBoard-U pedestal |
BGVmodul2 FEBoard-R darktest | BGVmodul2 FEBoard-S darktest | BGVmodul2 FEBoard-T darktest | BGVmodul2 FEBoard-U darktest |
BGVmodul2 FEBoard-R scantest | BGVmodul2 FEBoard-S scantest | BGVmodul2 FEBoard-T scantest | BGVmodul2 FEBoard-U scantest |
BGVmodul3 FEBoard-R pedestal | BGVmodul3 FEBoard-S pedestal | BGVmodul3 FEBoard-T pedestal | BGVmodul3 FEBoard-U pedestal |
BGVmodul3 FEBoard-R darktest | BGVmodul3 FEBoard-S darktest | BGVmodul3 FEBoard-T darktest | BGVmodul3 FEBoard-U darktest |
BGVmodul3 FEBoard-R scantest | BGVmodul3 FEBoard-S scantest | BGVmodul3 FEBoard-T scantest | BGVmodul3 FEBoard-U scantest |
BGVmodul1 FEBoard-R pedestal | BGVmodul1 FEBoard-S pedestal | BGVmodul1 FEBoard-T pedestal | BGVmodul1 FEBoard-U pedestal |
BGVmodul1 FEBoard-R darktest | BGVmodul1 FEBoard-S darktest | BGVmodul1 FEBoard-T darktest | BGVmodul1 FEBoard-U darktest |
BGVmodul1 FEBoard-R scantest | BGVmodul1 FEBoard-S scantest | BGVmodul1 FEBoard-T scantest | BGVmodul1 FEBoard-U scantest |
BGVmodul05 FEBoard-R pedestal | BGVmodul05 FEBoard-S pedestal | BGVmodul05 FEBoard-T pedestal | BGVmodul05 FEBoard-U pedestal |
BGVmodul05 FEBoard-R darktest | BGVmodul05 FEBoard-S darktest | BGVmodul05 FEBoard-T darktest | BGVmodul05 FEBoard-U darktest |
BGVmodul05 FEBoard-R scantest | BGVmodul05 FEBoard-S scantest | BGVmodul05 FEBoard-T scantest | BGVmodul05 FEBoard-U scantest |
BGVmodul09-4L FEBoard-R pedestal | BGVmodul09-4L FEBoard-S pedestal | BGVmodul09-4L FEBoard-T pedestal | BGVmodul09-4L FEBoard-U pedestal |
BGVmodul09-4L FEBoard-R darktest | BGVmodul09-4L FEBoard-S darktest | BGVmodul09-4L FEBoard-T darktest | BGVmodul09-4L FEBoard-U darktest |
BGVmodul09-4L FEBoard-R scantest | BGVmodul09-4L FEBoard-S scantest | BGVmodul09-4L FEBoard-T scantest | BGVmodul09-4L FEBoard-U scantest |
BGVmodul10-4L FEBoard-R pedestal | BGVmodul10-4L FEBoard-S pedestal | BGVmodul10-4L FEBoard-T pedestal | BGVmodul10-4L FEBoard-U pedestal |
BGVmodul10-4L FEBoard-R darktest | BGVmodul10-4L FEBoard-S darktest | BGVmodul10-4L FEBoard-T darktest | BGVmodul10-4L FEBoard-U darktest |
BGVmodul10-4L FEBoard-R scantest | BGVmodul10-4L FEBoard-S scantest | BGVmodul10-4L FEBoard-T scantest | BGVmodul10-4L FEBoard-U scantest |
BGVmodul06-4L FEBoard-R pedestal | BGVmodul06-4L FEBoard-S pedestal | BGVmodul06-4L FEBoard-T pedestal | BGVmodul06-4L FEBoard-U pedestal |
BGVmodul06-4L FEBoard-R darktest | BGVmodul06-4L FEBoard-S darktest | BGVmodul06-4L FEBoard-T darktest | BGVmodul06-4L FEBoard-U darktest |
BGVmodul06-4L FEBoard-R scantest | BGVmodul06-4L FEBoard-S scantest | BGVmodul06-4L FEBoard-T scantest | BGVmodul06-4L FEBoard-U scantest |