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    User name Saha

    Log entry time 11:12:17 on March 1,2001

    Entry number 57275

    keyword=Arc Integral Measurements

    Arc Integral Measurements
    ______________________

    We made several passes of the Dipole mapper to measure the BdL of the arc magnets. Here is a summary of the results:

    Run # Date/Time BdL (T.mm) Peak Noise (x10-3)

    731 2/28-12:32 8457.61 0.6
    732 2/28-18:49 8457.62 0.6
    733 2/28-18:56 8457.64 0.5
    734 2/28-19:05 8457.64 0.6
    735 2/28-19:14 8457.66 0.5
    736 2/28-19:19 8457.66 0.5
    737 2/28-19:29 8457.65 0.5
    738 2/28-22:00 8457.63 0.8
    739 3/1 -11:52 8457.70 0.16
    740 3/1 -12:08 8457.69 0.30

    The Arc magnet string is very stable with measurements made over a whole day.

    Avg BdL = 8457.65 +/- 0.03

    This is a variation at the level of 3.5 ppm.
    This corresponds to a nominal beam energy of 4236.4 MeV (assuming the nominal bend angle of 34.2918 deg)