videbaek wrote: > Ian, It seems that the present .geo file is not put up correctly. I do > not say this from having lookedat the actual code, but from my > knowledge that the geant geometry is set up as follows The are several > coordinate systems in MRS-- (TPM1,2 and D5) is in one (corresponding > to the possible movement of D5 relative to the IR-- TOFW panels are > situated relative to the nominal D5 center position but fixed. In this > coordinate system the TOFW Frame is centered at about a distance > 200cm, thus probably your 200 cm. The present positions in Geant i.e > the Yes, I looked at the code and it seems that there is ~200cm from D5 to TOFW, thus one must add the 190(!?)cm from IR to D5 center. It seems to me that we might want to have the 'global' distance to the detectors in the MRS written to the .geo file, as we do for the FS. Or is there a reason for not doing this? > .geo file should be quite close to the actual positions, Flemming Yes, they are...just that tricky 2m that was missing. On the positive side, it is easier to find triton candidates when the detector position is so wrong...:-) > ------------------------------ > Flemming Videbaek > Physics Department > Brookhaven National Laboratory > tlf: 631-344-4106 > fax: 631-344-1334 > > videbaek@bnl.gov-- > Ian-------------------------------------------------------------------- > | I.G. Bearden | > | Niels Bohr Institute Tb 3 email: bearden@nbi.dk | > | Blegdamsvej 17 phone: (+45) 35 32 53 23 | > | København Ø FAX: (+45) 31 42 10 16 | > | Danmark | > ---------------------------------------------------------------------- >
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