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    User name R. Snyder/D. Armstrong

    Log entry time 09:05:47 on July20,2005

    Entry number 148699

    Followups:

    keyword=Septa temp. dependence on beam position

    Table of measurements for septa temperature at different x beam positions. Wait 
    for about 15 minutes in each setting to get 
    stability. 35 µA beam current. Sweeper at 111 A.
    
    
       Beam Position          Septa Temperatures
    <
        X        Y          Upper R     Lower R     Upper L     Lower L           
       0.336    -0.088        7.603        7.084      6.866       6.928
      -0.014    -0.004        7.651        7.135      6.886       6.951
      -0.510    -0.037        7.583        7.067      6.842       6.898
      -1.142    -0.060        7.608        7.078      6.838       6.904     -1.561  
      -0.043        7.655        7.140      6.857       6.922
      -1.921    -0.025        (7.56)         -          -           -
    
      
    Last data point interrupted: they took beam for injector beam studies; however, it did not seem that the slope of the temperature rise was any different than the other positions. Conclusion No evidence for x-position sensitivity of septum heating with this raster setting. Note: ion chambers read 5040 rad/hr and 4530 rad/hour (left and right dump ion chambers respectively) throughout.