Hi, From various posts of Christian and Djamel, I was under the impression that the BB calibrations were currently in the db and that I should consequently be using the db parameters when trying to find the bb vertex. Hence my series of posts trying to figure out how to access the db. However, now that I think I have the db access figured out, I don't see anywhere in BrBbRdoModule.cxx code where the db calibrations are used. Instead, the programs seems to be loading from ascii files. Am I missing something? Is there an "official" BB vertex? Actually, I need both the ZDC and BB vertices for the Si/tile energy calibrations. I believe the current calibration for the mult elements may be off because of the use of a shifted BB vertex--an offset by as much as 2 cm will significantly affect the Si/tile calibrations. Regards, Steve
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