New module

From: Trine Tveter (trine@lynx.uio.no)
Date: Wed Jun 20 2001 - 12:46:00 EDT

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    Hi,

I have added a new module to brat/ana:
BrEffPackage.h, BrEffPackage.cxx

which is a very sketchy and clumsily programmed "efficiency module" 
which reads raw data and geant events in parallel, assuming the following
input:

  InputNode |---BrEventNode GeantDataNode (normal geant data)
            |
            |---BrEventNode RawDataNode (normal raw data)

It handles digitization, event adding on the TPC sequence level and
track reconstruction (normal chain and directly from Geant track/hits
to generate "ideal" tracks.)  It can handle single TPCs or spectrometer
arms - only MRS properly implemented for the time being.  It creates the 
following output:

  OutputNode |--BrEventNode GeantTrackNode (tracks direct from geant hits and tracks)
             |
             |--BrEventNode RawTrackNode (tracks from normal raw event)
             |
             |--BrEventNode SingleTrackNode (tracks from digitized geant)   
             |
             |--BrEventNode AddedTrackNode (tracks from added event)

each node with a set of track BrDataTables.

A still rather messy application program is found on:
~trine/brat_test/effpackage_test/EffPackageTester.cxx
A prototype macro reading the output file, checking overlap 
between geant tracks and reconstructed tracks and making a few
histograms is found on: 
~trine/brat_test/effpackage_test/ReadEffResults_MRS.C

Truls and I will (hopefully) try to do some more work on this 
during the coming days - in particular Truls has some good ideas for
developing the package and making it more elegant and user-friendly.

                                                  Cheers,
                                                      Trine

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