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User name Saha
Log entry time 16:13:01 on February 4,2000
Entry number 32578
keyword=Shift Summary
Shift Summary, Feb 4, 2000, 08:00 to 16:00
____________________________________
08:00 We started the shift with DAQ problems. See ROM's halog entry.
Taking 3He Elastic Runs (Q^2 = 15 fm-2)
09:30: DAQ supposedly fixed.
Run #s 1806-1820 maybe all JUNK Runs.Troubleshooting DAQ problems
Look carefully at Run#s 1803 to 1805.
Run #1821 seems to be good (check carefully).
Run #1822, 1823 Er1 Run error, Reset Coda between 1822 and 1823 - did not help
Run #1824-1826 Good Runs, Dead Times = 9%
Run #1827 Current = 10 uA, PScale 1,100,5,100,1, Dead time = 27%
Run #1828 Current = 50 uA, PScale 5,100,5,100,1 Dead Time = 9%
Run #1829 JUNK
Run #1830 Current = 50 uA, PScale 5,100k,100k,100k,100k,65k, Dead time =3%
11:30 Troubleshooting Dead Time inconsistencies with Bob and Dave Abbott
OTR signal taken away by MCC for ~10 Minutes
Run #1831 Current = 10 uA, Pscale 1, 100k,100k,100k,100k,65k, Dead Time =26%
Run #1832 Current = 20 uA, Pscale 2, 100k,100k,100k,100k,65k, Dead Time =14%
Run #1833 " " "
Run #1834 -1836: Trying to understand Dead Time problems
Run #1837 Current = 10 uA, Pscale 1, 10,1,10,65k, Dead Time =30% - Good, 1M
Run #1838 Current = 5uA, Pscale 1, 10,1,10,65k, Dead Time =17% - Good,1.5M Run #1839 "", Good,1.5M
Run #1840 "", Good,1.5M , DHist checked, everything OK
Run #1841 "", Good,1.5M
13:50 - 14:50 Beam off, IOC problems
Run #1842 "", Good,1.5M
Run #1843 "", Good,1.5M
Run #1844 "", Good,1.3M
15: 55 - End of 3He elastic (Q^2 = 15 fm-2) Running . Obtained ~30 M events.
Harp Scan (#370), 5 uA cw beam with no raster. Beam Spot Size = 81/78 um
16:10 Going to Kinematics #21. Changing electron arm, angle = 91.19 deg, P_e = 694 MeV