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    User name Yi Qiang

    Log entry time 20:35:01 on April 29, 2009

    Entry number 269799

    Followups:

    keyword=Preliminary polarization estimation for the previous 3 periods of running

    As we got very consistent EPR calibrations from Rb and K in Transverse pumping (Halog: 269713), I’m using this calibration constant to get the following polarization estimations. The calibration constant for the Vertical pumping is extracted by combining the Transverse calibration constant with the NMR ratio from Vertical and Transverse directions (Halog: 269724).

    §  Transverse Calibration Constant: 2.205 %/mV

    §  Ratio of Vertical NMR to Transverse NMR: 0.581

    §  Vertical Calibration Constant: 2.205/0.581 = 3.795 %/mV

    Period

    NMR (mV)

    Online Calibration Constant (%/mV)

    Online Polarization (%)

    New Calibration Constant (%/mV)

    New Preliminary Polarization

    Longitudinal Elastic

    15.6 – 5.5

    3.967

    62-22%

    3.795

    59% - 21%

    Vertical Production

    22.5 Max

    3.967

    89% Max

    3.795

    85% Max

    Transverse Production

    18.7

    2.037

    38%

    2.205

    41%