[BLAST_ANAWARE] dst/crunch update IV: new stuff

From: zhangchi (zhangchi@general.lns.mit.edu)
Date: Sat Jan 03 2004 - 15:51:06 EST


5. epics.cal

 a new ascii file epics.cal is checked into Blast_Params. It includes
 run depended information in order to correctly parse the epics,
 scaler events. for instance it contains a "spinflip" entry that
 indicates if spin flipper is on for each run.

 This file is meant to synch the library with the run specific
 operations in charge.C without recompilation.

 read the file which has detailed comments for more information.

6. new entries to the lr ntuple:

 nev: event number, it is trivial in lr but it makes it possible to
   refer to the exact event in coda file from flr, flrpm ntuple.
 nrun: though with the data set feature in init.C, knowing the run
  number for each event hardly has any advantage, we nevertheless
  added it
 tep: time of the epics event linked to this physics event round up to
  second
 tsc: time of the scaler event linked to this physics event

 an epics/scaler event is said to be linked to a physics event, if
  this epics/scaler event bears a time coda time stamp earlier than the
  physics event, and the next epics/scaler event bears a coda time stamp
  later than the physics event. "time-tep", or "time-tsc" should not be
  very large. in fact, the difference is 0 or 2 seconds most of the
  time. a large difference means the epics and scaler info associate to
  that particular physics event may not be accurate.

 LADS raw signals are in lr now:
  "t15l:a15l:p15l:n15l:t15r:a15r:p15r:n15r:"
  "t20l:a20l:p20l:n20l:t20r:a20r:p20r:n20r:"
  see lrn.h at the top for the entry definitions in lr ntuple.



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