Hello, This message is a solicitation for comment on the possibility of renaming a vertex class. I was discussing yesterday with Michael Murray how to go about calculating a vertex from the ZDC's and gave him my opinion that he should have a module that generates a vertex object which I had assumed would logically be named BrVertex. I then looked at the BrVertex class that we have in the vtx directory of brat and I learned that the BrVertex class is actually a module which calculates the vertex from the MRS TPC's. The vertex that it returns is actually a float[3]. The vertex in RHIC experiments is very important and will probably have more information than just x,y,z. A more complete (perhaps still prototype) vertex class could be found ala PHAT (http://www.rhic.bnl.gov/~phobos/PhatSrc.V4.9.0/TPhVertex.html) Such a class would logically be named BrVertex. I am writing to ask if we should consider renaming the current BrVertex class to be for example BrTPMVertexModule or something of that nature and make a BrVertex class which contains the vertex data. The vertex is something that is going to be calculated using several methods ie TPM's, BB, ZDC's perhaps FS TPC's and it will probably be necessary to be able to compare vertices which could also be built into this object. I could perform this change if I receive some positive feedback regarding this. If I receive positive feedback, but no suggestion for the name change, I will move BrVertex ->BrTPMVertexModule and encourage Michael to name his ZDC vertex finding module BrZDCVertexModule. The new BrVertex could either start out having 3 data members, namely x, y, z positions of the vertex, but might logically model TPhVertex since that has extra information that I think we will need (eg id of detector generating vertex, errors on vertex positions etc) Regards Kris
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