- During the dedicated MD of week 45 in 2009: We took the LHC 50 ns beam and obtained the results mentioned in the SPS Elogbook on Tuesday 03/11/09 at 18:28. Deducing the intensity / bunch from the BCT yields ~ 1.2E11 p/b, whereas from the FBCT we have ~ 2 times less. Lars Jensen was contacted to check whether there could be a calibration problem. According to him (discussion on 23/11/09), the problem could be linked to calibration but the most likely cause, is a wrong setting of the 40MHz phase which can be controlled (empirically) from Markus' application. Indeed, the acquisition is done during 25 ns but the integration time is 20 ns. Therefore, if the pulse is coming too late the intensity will be underestimated. In the FBCT application, there is a knob called "Phase" allowing to scan the position of the integration window (each step corresponds to 1.5 ns). The idea would be to scan and maximize the signal.