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    User name jpchen

    Entry time Wed Jul 28 09:45:55 EDT 1999

    Entry number 65

    keyword=Minutes of 7/21 analysis meeting

    Minutes of 7/21 analysis meeting:

    Present: Alexandre Deur, Pibero Djawotho, Feng Xiong, Xiaodong Jiang, Mike Finn and Jian-ping Chen.

    Progress since 7/17 collaboration meeting:

    Alexandre: Replayed elastic runs at 1.72 GeV with Seonho's NTupe.
    Next week: work on elastic asymmetry and also check quasielastic asymmetry.
    Longer term: Continue Monte Carlo.

    Pibero: Wrap up Trigger Inefficiency.
    Next week: Analyze N2 and empty cell runs to study dilution effects.
    Longer term: Radiative corrections.

    Feng: Will use new ESPACE with raster and new data base. Also put energy loss for
    N2 elastic peak. Leave for MIT end of this week. Next time back to JLab will
    give a presentation on Radiative corrections for qausielastic scattering.

    Xiaodong: Polished analysis code. Used a hit pattern including S1, S2, C and Shower.
    Raised issue of tracking quality check (using Chi square?). Also reminded people
    that there were timing change twice during the experiment (in Oct. and Nov?)
    Also mentioned the EPICS variables: Spectrometer NMR values useful for determining
    the field settings and checking stablibility.
    Will continue working on acceptance and elastic cross sections.

    Also had some discussion on radiative corrections with David Lhuillier. next morning, David gave a short presentation on radiative corrections for elastic
    scattering. He examined the assumptions usually being used for the radiative corrections. The transparencise of his talk is avaiable. He will work on the
    elastic radiative corrections for E94-010 (at Saclay). Will keep contact with
    people here.
    Also Feng and Alexandre will collect and make a list of the useful references
    for radiative corrections.