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    User name Nerses

    Log entry time 00:17:43 on March 31, 2006

    Entry number 168972

    This entry is a followup to: 168963

    keyword=DC efficiency and rate comparison after Beam increase from 7 to 8 µA

    After comparision of runs 3520, 3521 @ 7 muA and 3522,3523 @ 8muA we got the following table of chamber efficiency drop in percents.
    U X V
    1 2 2 1.5
    21.51.5 0
    3 5 6.5 5
    4 2 2 0
    5 2 3 0
    All results coming with errors 1-2 percent.




    Figure 1 DC Rates method 1 Run 3523 at 8muA



    Figure 2 DC Rates method 2 Run 3523 at 8muA



    Figure 3 DC Rates method 1 Run 3522 at 8muA



    Figure 4 DC Rates method 2 Run 3522 at 8muA



    Figure 5 DC Rates method 1 Run 3521 at 7muA



    Figure 6 DC Rates method 2 Run 3521 at 7muA



    Figure 7 DC Rates method 1 Run 3520 at 7muA



    Figure 8 DC Rates method 2 Run 3520 at 7muA



    Figure 9 Efficiencies of chambers and tracks Run 3523 at 8muA

    3523_merged.ps

    Figure 10 Efficiencies of chambers and tracks Run 3522 at 8muA

    3522_merged.ps

    Figure 11 Efficiencies of chambers and tracks Run 3521 at 7muA

    3521_merged.ps

    Figure 12 Efficiencies of chambers and tracks Run 3520 at 7muA

    3520_merged.ps