Minutes: E895 meeting at LBNL, 27th January 1998, prepared by GR


GR:     News Items: It is pleasure to welcome Jerry Chance to the LBNL
        group. He is temporarily employed as a postdoc for the next
        three months and will be working on MUSIC data. After Nathan
        has 'cleaned up' the incoming directory, Jerry has kindly
        offered to help out with minimal CVS service. This should
        allow people to make the transition to self-regulation (as
        discussed at UCD) less painful.

        Annual reports are due 16th February. Dan offered a contribution
        from UCD.


        Data Processing:

        Pentium farms are currently running 8 A GeV central trigger data.
        (2Dv1.20, BFT v 4.40)

        PDSF (SUN) 4 A GeV Au+Au central triggger with  MUSIC output
        and latest t0 calibration files from Chris (2D v1.20,BFT v4.4)

        PDSF (HP)  4 A GeV Au+Be data with MUSIC output. Latest t0 files
        (2D v1.20, BFT v4.4)

        13th Pentium Machine added to the cluster and is now online. It
        is also the software server node, relieving KSTAR4.

        Pending a package from OSU, eight selected histograms are being
        generated in PASS1 for quality control. Comments are welcomed.


        Data Analysis:

        Dicussion of Heng's flow results. GR, Roy and Chris have talked
        in order to understand the SUNY, LBNL differences. At first sight
        we (Heng and GR) believe the two analysis are very similar. Two
        pontential differences are a) PID and b) efficiency correction
        methods. Chris's ntuples (after PID) are available, as well as
        his PID routine from incoming. Heng uses the fourier method
        to correct the reaction plane angle while Chris uses the efficiency
        correction in weighting method to calculate reaction plane angle.
        Heng is looking into possible differences here. Dan might get
        a hold of Chris's ntuples and help out. UCD uses Heng's PID
        but SUNY-style efficiency correction.

        Heng's QM'95 write-up is available. GR prefers to sort out the
        differences between the various flow analysis before submission.
        Manuscript deadline is 31st. We all agreeded to work up to the
        last minute to resolve the issue. The write-up is being circulated
        in its current form for comments. If we cannot find the source
        of the difference by 31st Jan, the collaboration must be prepared
        to suggest a suitable compromise.

        To view the manuscript the URL is
        http://www-rnc.lbl.gov/~hengliu/qm97.ps

        Heng confirms Ollitrault's corrections are indentical to Voloshin's
        method

        Chris suggested Tapes # 200,201,202 for the btf/jft comparison.
        We agree.

        UCD has copied one file and will run that file on their
        HPs with using both trackers and the latest code.

        Is there any agreement on tapes for 8 A GeV. Mike ?

        Music update from Jerry and Juan. Music calibration files given
        the seal of approval

        Action Items:

        1)      Get account account on HPSS (Done)

        2)      Get QM'95 text to collaborators (Done)

        3)      Export home/common to pentium farm. GR will talk to
                Tina (PDSF)

        4)      Get MUSIC track matcher operational by next week