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    User name Eric Voutier

    Log entry time 23:43:24 on February 3,2000

    Entry number 32325

    keyword=Current Scan


    21:30

    1) Experiencing a "Low pressure" and a "Main replay" alarms at the "gas
    alarm" panel in the counting house. Jack Segal comes to solve the problem.

    Iscan on 12C
    ---------

    Run # I (uA) ps 1/2/3/4/5

    1760 40 10/1000/1/1/1
    1761 40 10/10/1/1/1
    1762 20 10/10/1/1/1
    1763 10 10/10/1/1/1
    1764 5 1/1/1/1/1
    1765 4 1/1/1/1/1

    Beam has been moving horizontally, ask for centering the beam and then
    continue the Iscan by starting again at 4uA to have a connection point.

    1766 4 1/1/1/1/1
    1767 3 1/1/1/1/1
    1768 2.5 1/1/1/1/1
    1769 2 1/1/1/1/1
    1770 1.4 1/1/1/1/1
    1771 1.0 1/1/1/1/1

    23:40 Moving to Helium target

    Non-linearity in the T_i/Q ratio... the argument about the non-linearity in the
    T_i/Q ratio, especially in the Hadron arm is a strong background contamination
    from cosmics (copuld be up to ~20Hz according to Nilanga) which effect is
    stronger when the physics counting rate is low as for the hadron arm case.