Ian,
It seems that the present .geo file is not put up correctly. I do not say this from having looked
at 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 .geo file should be quite close to the actual positions,
Flemming
------------------------------
Flemming Videbaek
Physics Department
Brookhaven National Laboratory
tlf: 631-344-4106
fax: 631-344-1334
videbaek@bnl.gov
----- Original Message -----
From: I. G. Bearden
To: brahms-dev-l@bnl.gov ; brahms-tof-l@bnl.gov
Sent: Monday, July 17, 2000 7:05 AM
Subject: Where is TOFW?
Dear All,
I have been trying to understand some PID code that Djamel wrote. It
seems to work fine for the FFS, but fail for MRS. After fumbling around for almost the
whole of last week, I think that I may have found the reason.
In the .geo file, TPM2 has its x center at 292.000 cm, but it seems that
the panels of TOFW are centered at around 200 cm. The last time I was at BNL,
I was sure that I saw TOFW behind TPM2, so I'm a bit confused.
Question for dev-l: has anyone else had this problem, if so what should be done to correct it?
Question for tof-l: what are the actual centers of the four TOFW panels?
Thanks,
--
Ian--------------------------------------------------------------------
| I.G. Bearden |
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