Hi Claus, The volume are in fact NOT used in brat, but it ougt to have the full 30 cm width. For code that looks at matching alll slat position are calculated relative to the factual center which comes from DB. That is very sumalr to all volumens in the geometry db; for almost all modules the important part is the position and rotation matrix . The volumes are in fact as know not used anywhere in Brat per say, there are attempted to macth the volume for square volumes like tpcs and T3 but do not nesc reflect the fiducial volumes!!! Flemming ----- Original Message ----- From: "Claus O. E. Jorgensen" <ekman@nbi.dk> To: "Dana Beavis" <beavis@bnl.gov> Cc: "Flemming Videbęk" <videbaek@bnl.gov>; <hagel@comp.tamu.edu> Sent: Wednesday, November 26, 2003 6:32 AM Subject: Re: d-au analysis > > > Those numbers are correct for the size of the scint. To all pratical puposes > > they run from -15cm to 15 cm in 5cm steps. > > Ok, but to me it looks as if there's only one volume in the db (the middle > one). How is this volume used in brat? Could we just change the size so > that the volume include all the active scint volumes? > > > If the vertex comes with poor resolution this may need to be folded into the > > acceptance calculation. > > The vertex used for the acceptance calculation is calculated from the > track line in TPM1, so I guess the resolution is pretty good. I don't know > the effect of this in the FS. > > Claus > _______________________________________________ Brahms-dev-l mailing list Brahms-dev-l@lists.bnl.gov http://lists.bnl.gov/mailman/listinfo/brahms-dev-lReceived on Wed Nov 26 08:49:53 2003
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