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    User name R. Michaels

    Log entry time 07:42:02 on July16,2005

    Entry number 148229

    Followups:

    keyword=background studies

    Dipole scan -- Left Arm. To study backgrounds.
    Side benefits: Crude alignment and cross check S0 vs S2m.
    Target: BeO. (Not allowed to use Alum -- no cryo-cooling)
    Current: 1uA

    Momentum ....... HAPPEX run ... Spectr. Run
    Setting
    % ..... GeV

    0 ..... 2.7076 ...... 3635 ...... 2070
    10 .... 2.9784 ...... 3636 ...... 2071 ... PS factors adjusted
    20 .... 3.25 ........ 3637 ...... 2072
    15 .... 3.113 ....... 3638 ...... 2073
    12 .... 3.0325 ...... 3639 ...... 2074 and 2075 (better PS fact.)
    8 ..... 2.924 ....... 3640 ...... 2076
    6 ..... 2.870 ....... 3641 ...... 2077 and 2078 (adjust PS)
    4 ..... 2.8159 ...... 3642 ...... 2079
    2 ..... 2.7617 ...... 3643 ...... 2080 and 2081 (adjust PS)

    Now we'll do a run with -2% which should be of some use for
    alignment and S0/S2m comparison.
    -2 % .. 2.653 ....... 3644 ...... 2082

    Finally, we return to "0 %" and plan to run until 08:00 if allowed.
    0 ..... 2.7076 ...... 3645 ...... 2083

    Fig 1 shows for run 2081 the X distribution for S0 and S2m based
    triggers. Not sure what it means yet, but it looks interesting.


    FIGURE 1