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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.