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User name F.Benmokhtar
Log entry time 08:02:43 on March17,2000
Entry number 36338
keyword=Shift Summary.
Shift crew: Fatiha Benmokhtar, Olivier Gayou, Bitao Hu.
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00:00-Get Beam.
00:02-Asked for OTR in, But we can't see anything!
00:15-Start Carbon pointing. I = 40 microA. Beam unstable. Run#2778
00:35-Start a new carbon run with a stable beam. Run#2779.
00:50-Run#2780. Short carbon run
00:57-Start moving hadron spectrometer to 35.63 deg.
01:25-First Harp Scan, big beam size. Asked MCC to correct it. It takes 5 minutes
to do it.
01:40-Other Harp Scan, but the width is still not good. MCC will take other 5 minutes to correct it.
01:50..Other Harp Scan. Now, vertical width is good, but hotizontal is still very big.
01:55..Same problem, other 5 minutes...
02:00..Good Harp Scan with raster off (the best MCC can get...) . Run#655.
02:30-Harp scan with raster on and check raster size. (Run
02:35-Start carbon pointing with 50 microA.
02:55-4 cm dummy target, I=10 microA.
03:04-10 cm dummy target, I=10 microA.
03:15-He3 target.
03:20-I=50 microA.
03:25-I=80 microA.
03:30-I=100 microA. Is the maximum we can get now.
03:40-Now, we are runing at 110 microA.
04:10-Beam down, MCC said that it will take few minutes.
04:50-I=9 microA, the maximum we can get.
04:55-I=30 microA, the max.
05:00-I=60 microA, the max.
05:10-I=80 microA, the max.
05:20-I=82 microA, MCC called to say that we will run with this current for few hours.
06:30-Asked MCC to make OTR in, but we did not succeed to see anything ! So we asked for OTR off and back to the maximum of Current (83 microA).
07:30-continue taking data.
07:53-Mcc called, The beam will be down for 15 minutes.
Run Summary He3: (e,e'p):
***********************
Evts are in Million, Charge in mC, Time in (hour:minute).
Run# .....Evts / Sum .....Charge/ Sum ......Time/ Sum .. Comments.
.. 2785...0.117/ 0.117...... 062.2/ 062.2 .....00:12/ 00:12.. Stopped to change Prescalers.
.. 2786...0.300/ 0.417...... 143.0/ 205.2 .....00:34/ 00:46.. Stopped, Beam down.
.. 2787............................................................................... Short test run.
.. 2788...1.210/ 1.627...... 586.8/ 792.0 .....02:15/ 03:01.. Good run.
.. 2789...0.200/ 1.827...... 097.4/ 889.4 .....00:25/ 03:26.. Stopped, Beam down.
.. 2790...Goes to the next shift...
The total number of events in this shift is not enough to see the 2bbu peak in e_miss.