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User name F.Benmokhtar
Log entry time 08:04:13 on Oktober28,2000
Entry number 51186
keyword=*E89044* Shift Summary
Shift Summary:
*************
00:00-Bob Michaels is in the Hall, working to set trigger like it was for
...........***E89044 Experiment***.
00:50- Bob Finished his work in the hall.
............Running cosmics to check that nothing is broken.
01:20- Halla goes to beam permit.
01:25- Start running with Multifoil Carbon target, 2 uA.
01:40- Running with 40 uA, Collimator 6msr in both arms.
............we noted that the raster has an unusual shape, see Bob's
............halog entry, so we did some tests by taking only a pulser
............then changed to dummy target, with the initial prescals.
02:10- Back to Multifoil carbon target.
02:39- Running with Open Collimators.
03:09- Changed fields to 1.000 GeV/c.
03:18- Mcc Called, Accelerator tripped, they will give us beam in 7 minutes.
03:27- Got beam, running again with 40uA.
03:48- Collimators 6msr in.
04:25- Put Sieve Slit in.
04:50- Changed field to 0.975 GeV/c.
04:55- Running with Open Collimators., 40 uA.
05:20- Moved beam 1mm to the right, took short run, raster
............looks better now.
05:25- Beam centred, Put Collimators 6 msr in.
05:50- Cycle Quads, Moved Spectrometters to the new settings.
............Theta_R= 39.73 deg, P_R=1.025 GeV/c
............Theta_L=39.73 deg, P_L=1.025 GeV/c
06:22- Started running.
............ Q3 Right arm went to positive polarity!!!???
............For what its worth, the T1 and T3 rates are ~equal.
06:55- Runnig with Open Collimators.
07:15- Change fields to 1.00 GeV/c.
07:25- Running with Open Collimators.
07:50- Running with Collimators 6msr in.
Run Summary:
************
a)Theta_R=Theta_L=38.73 deg:
*************************
2128: Cosmic run.
2129: Cosmic run.
2130, 2131, 2132: test runs for prescals adjustment.
2133: Collimator 6 msr , Momentum=1.025 GeV/c.
2134: test run, all prescals very big eccept ps8=1 (pulser), to check
.........the raster.
2135:10 cm dummy.
2137: Open Collimators , Momentum=1.025 GeV/c.
2138: Open Collimators , Momentum=1.025 GeV/c.
2139: Open Collimators , Momentum=1.000 GeV/c.........Stopped, beam down
2140: Open Collimators , Momentum=1.000 GeV/c.
2141: Open Collimators , Momentum=1.000 GeV/c..........Short run.
2142: Collimators 6msr , Momentum=1.000 GeV/c.
2143: Sieve Slit in.........., Momentum=1.000 GeV/c.
2144:.......................................................................................Junk.
2145: Open Collimators , Momentum=0.975 GeV/c.
2146: Open Collimators , Momentum=0.975 GeV/c...........Beam coord (1mm, 0).
2147: Collimator 6 msr , Momentum=0.975 GeV/c.
b)Theta_R=Theta_L=39.73 deg:
*************************
2148: Collimator 6 msr , Momentum=1.025 GeV/c.
2149: Open Collimators , Momentum=1.025 GeV/c.
2150:........................................................................................Junk.
2151: Open Collimators , Momentum=1.000 GeV/c.
2152: Collimators 6msr , Momentum=1.000 GeV/c.