Re: [Brahms-dev-l] tpc drift velocity

From: Peter H.L. Christiansen <pchristi@nbi.dk>
Date: Wed Apr 28 2004 - 05:39:54 EDT
Hej Bjorn,

There should be added a BrTpcCalModule for each TPC to the main module and
then a call to SetUseDriftVelocity(kTRUE) or something like that in the
bratmain script. Typically it was added in the same loop where the local
tracking packages are added.

Cheers,
  Peter


On Wed, 28 Apr 2004, Bjorn H Samset wrote:

> On Wed, 28 Apr 2004, Djamel Ouerdane wrote:
> 
> > Hi,
> >
> > I could trace back the run period for which vdrift is bad:
> >
> > TPM1: 8672 - 9354
> > TPM2: 8670 - 9354,
> >
> > namely all calibrations committed on the 24th of July 2003.
> >
> > That's quite a number of runs...
> 
> Now this is _really_ odd. With a dv that's this off I wouldn't expect to
> see tracks at all, let alone good matching and PID, but looking at my
> plots for this run range they don't seem different from the ones
> outside... This begs the question:
> 
> Do we really USE the calibrated drift velocities? Or are we still just
> picking up the default value from BrDetectorParameters.txt? Trying to
> trace this in the code, I'm actually not quite sure... I'll try looking a
> bit more into this later today - unless someone has a ready answer, of
> course :-)
> 
> --
> Bjorn H. Samset                           Phone: 22856465/92051998
> PhD student, heavy ion physics            Adr:   Schouterrassen 6
> Inst. of Physics, University of Oslo             0573 Oslo
>                               \|/
> ----------------------------> -*- <-----------------------------
>                               /|\
> 
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-- 
:-) --------------------------- )-:
 Peter H L Christiansen
 pchristi@nbi.dk / (+41)764870425
:-D --------------------------- \-:


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Received on Wed Apr 28 05:40:15 2004

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