I put the new t0 into the map, the result an analysis done to the run8088.
The system is better calibrated if we look at the HBLA drift spectra.
A single t0 is assigned the a group of 8 channels (half of one connector).
A total of 11% of the groups have no enough information and are assigned
values of the neighboring channels (could be as far as a neighboring sector).
The propagation time on STB's and ADB's are taken into account into t0's in
the map.
A single offset wrt TOF is added to t0 (2700ns). And there are tcl variables
to adjust the offsets per sector if you wish. The new t0 does not help TBT
for now but the additional correction put the drift spectra starting at
about -50ns resulting in bad chi2. I am looking at the issues. Helps are
certainly welcome.
You can find two cooked files at /work/clas/disk2/dec97/liming_7787.new
and liming_7787.old to compare the results. Thanks Joe.
Regards,
liming