RE: reduction of QM 2002 data - status

From: Djamel Ouerdane (ouerdane@nbi.dk)
Date: Tue Jun 18 2002 - 10:21:57 EDT

  • Next message: Flemming Videbaek: "Re: T1 and T2 geometry in y direction."

    > 1. ZDC
    > 	I have no idea how difficult this is, but we really need timing
    > calibrations for the earlier parts of the run.  Michael has said to me that
    > the calibrations in the Db are good enough for the entire run, but the way
    > our data base works we can only pick up calibrations from runs before the
    > run we are reducing (reconstructing, etc).
    
    
    I suggest someone inserts the existing cal. for these early runs and check 
    the results quickly. It shouldn't take long at all.
    
    > 
    > 2.  TPC drift velocities.
    > 	I think that most runs have been done for the MRS. For the FS, the work is
    > proceeding (thanks David!), but we could use one more person to help with
    > this.
    > 
    > 3. TOF
    > 	Some calibrations need to be redone to get the maximal benefit from the new
    > slewing correction.  I don't know the time scale of this work, but my guess
    > is that it is short(Djamel, is this approximately correct?)
    
    
    Concerning the slewing, we only need high statistics. It should be done 
    once (I hope). We can pick up some test runs throughout the whole run 
    period and check the results. The only concern is the time offsets. They 
    should be well calibrated (Flemming says better than what we're using now) 
    for the slewing correction.   
    
    Djam
    



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