Testin' the new cluster-stuff

From: Bjorn H Samset (bjornhs@rcf.rhic.bnl.gov)
Date: Wed Oct 04 2000 - 09:18:23 EDT

  • Next message: Konstantin Olchanski: "Re: Testin' the new cluster-stuff"

    Hi, all.
    
    First of all, Peter, thanks for your good note on the updated clustering
    and tracking. I am testing it out now, and it seems to work increadibly
    well. The TFF doesn't seem to crash anymore, and a quick test at 90
    degrees shows that the total efficiency (see my latest note for
    definition) which was ~80% is now 99.8%!!! Some parameters may have
    changed (I'm looking thorugh details now), but I think it is mainly due 
    to the trackfinder not giving up. I'm running more thorough tests, so
    more about this tomorrow or the day after.
    
    One thing about your update: If you have sequences with negative
    adc-values, i.e. if you for some reason do not run the PreProcessor or
    similar, then you may end up with an fMeanPad that is outside ( minPad <=
    fMeanPad || fMeanPad <=maxPad ) causing your first assert() in
    BrTPCCluster->Build() to fail. This caused me some headaches just now... I
    think maybe this should be changed, since neg. adc-values may well be a
    feature of unprocessed sequences we might want to work with (with all the
    problems that gives...). What do you think?
    
    How are things in Copenhagen, b.t.w.?
    
    ------------------------------------------------
    Bjorn H. Samset
    Master-student in Heavy Ion physics
    Mob: +47 92 05 19 98  Office: +47 22 85 77 62  
    Adr: Kri 2A709 Sognsveien 218 0864 Oslo
    



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