Proposed changes to VTX directory

From: Bjorn H Samset (bjornhs@rcf.rhic.bnl.gov)
Date: Mon May 14 2001 - 05:29:30 EDT

  • Next message: Erik Jakobsen: "BrRdoModuleBB"

    Heigh ho :-)
    
    Now that I suddenly have lots of time on my hands (yeah right) I thought
    I'd get around to the long overdue cleanup of the TPC vertex code. Here is
    what I intend to do - please comment on anything that shold be done
    differently or additional changes.
    
    I'll create BrTPCVertexModule, a common base module for TPC vertex
    algorithms that handles filling of data objects etc. The two existing
    algorithms become
    BrTPCClusterVertexModule
    BrTPCTrackVertexModule
    and should function as before, except for the following changes:
    1) I'll get rid of the SetDetectorHits/Tracks - all data will be taken
    from InputNode() 
    2) The parameters will be loaded via the module name instead of a third
    creator parameter (i.e. Name will have to be "TPM1")
    3) My proposed cuts on well-determinedness will be included as default
    (settable, of course), and VertexFound will only be 1 if these criteria
    are met.
    
    I'll also add proper statistics histograms, which have been sadly lacking,
    and do some cleanup of the algorithms themselves. I hope to fix the
    y-problem with the ClusterVertex. BrVertex will be cleaned up a bit
    (should it be called BrVertex, or was the old name BrVertexData better?)
    
    BrVertexModule will be updated to reflect these changes, but I'd like some
    input on the future of this class. I intended it to be a common vertex
    class that looks for data from BB, ZDC, TPM1 and in the future TMS/SMA,
    and creates a BrVertex for each (either by picking an existing one or by
    using a VertexModule or RdoModule) and then possibly setting a flag on
    vertex consistency, (calculating a mean vertex?) etc. Is this a useful
    module, or will vertexing in any case be done "here and there" so that a
    common collector only adds confusion?
    
    Well - I expect there are some opinions on this ;-) The changes will be
    ready in a day or to, so do shout.
    
    Ping :-)
    
    ------------------------------------------------
    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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