Re: Beam Beam vertex

From: Bjorn H Samset (bjornhs@rcf.rhic.bnl.gov)
Date: Thu Jan 04 2001 - 04:42:49 EST

  • Next message: Bjorn H Samset: "...and the file."

    > While attempting to extract DN/deta from TPM1 data from the most recent 
    > datareduction pass I came ac known across a potential disturbing =
    > problem.. As part of the analysis I looked at the VTX(BB)-VTX(tracks in
    > TPM1).
    
    Yup - I see this also. Have a look at the included ps-file - it shows the
    same as Flemmings plot, but for both TPM1 vertex modules independently. I
    have also checked different MRS angles, and I always see the same
    behaviour. This suggests to me that the problem is with BB timing, since
    any problem with vertexing or clustering/tracking would show up in one of
    these plots. (I guess you maybe already concluded this from JH's plot, but
    here at least is an independent opinion ;-) 
    
    ------------------------------------------------
    Bjorn H. Samset
    Master-student in Heavy Ion physics
    Mob: +47 92 05 19 98  Office: +47 22 85 77 62  
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