Fixed, e748, Fri Jul 7 20:26:30 2017, e748 shift U Simon G +Valérie L, RUN, General, CD2, Runs 368, 368_1, 368_2, 368_3 10Be runs 
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RUNS 368, 368_1, 368_2
I ~ 3.7 eµA (on D6 TI22)
General DAQ 1Go during 1h30
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Fixed, e748, Fri Jul 7 22:02:39 2017, e748 shift U Simon G +Valérie L, CATS, General, CD2, CATS situation
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During Run 368, we note at 21h30 that now CATS2 has continuously a 0.1 µA current. Maybe there are some microtrips on some central part of the detector.
The counter also shows strong fluctuations of CATS2 counting rate between 80 and 40kcps down to 0 then up again.
Concerning the raw charges on CATS, the situation is similar since the beginning of the runs in the afternoon, 7th July. |
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Fixed, e748, Fri Jul 7 22:36:12 2017, e748 shift U Simon G +Valérie L, BEAM, General, CD2, Beam during Run368, situation at 22h30
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After strong instabilities the beam intensity is better and we have recovered nearly 93kcps on CATS2 as during the beginning
of run 368 at 16h30. Cf scalers below at 22h35, and the picture of the primary beam intensity. |
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Fixed, e748, Fri Jul 7 23:45:52 2017, e748 shift U Simon G +Valérie L (-12 am)/ Daisuke+Shumpei+Marlene (12 am -), RUN, General, CD2, Run 368 (following) at 23h45 6x
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At 23h45; Beam stable I 3.95 µA
CATS2 ~ 94 kcps (2 pictures of CATS at 4 hours difference attached)
chio 89kcps Plastics 87kcps FAG ~ 180-190/s
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Fixed, e748, Sat Jul 8 06:02:18 2017, e748 Marlène Daisuke Shumpei, RUN, General, CD2, RUN369
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Caviar has tripped during the night (before 4a.m.)
We have put the bias again but we could not reach the nominal value of 1040V. We have set the bias at 950V.
If we increase the bias, then the current rises strongly and reaches the 2uA limit.
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Fixed, e748, Sat Jul 8 08:39:10 2017, Daisuke, Shumpei, OFFLINE, General, CD2, 12Be(d,t)?
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/home/e748/analysis/nptool/Outputs/Analysis/runtest.root (run_0331_0.root?) was analyzed.
DSSD energy vs theta_lab plot for triton is attatched.
The gates to select triton are also shown.
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Fixed, e748, Sat Jul 8 08:39:37 2017, Shumpei, Daisuke, OFFLINE, General, CD2, 12Be(d,t)?
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/home/e748/analysis/nptool/Outputs/Analysis/runtest.root (run_0331_0.root?) was analyzed.
DSSD energy vs theta_lab plot for triton is attatched.
The gates to select triton are also shown.
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Fixed, e748, Sat Jul 8 09:00:32 2017, e748 Anastasia, D. , RUN, General, N/A, error msg on run control (run 369)
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| [IMG]elog:274/1[/IMG] |
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Fixed, e748, Sat Jul 8 09:19:37 2017, e748 Anastasia, D. , RUN, General, N/A, CATS raw 2D charge during run 369
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| [IMG]elog:275/1[/IMG] |
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Fixed, e748, Sat Jul 8 09:43:17 2017, e748 Anastasia, D. , RUN, General, N/A, DAQ Parameters: Caviar new run 370
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Threshold of CAVIAR_DDM changed from ~ -800 to ~ -510
run 370 Triggering only in Cats to check CAVIARs new thresholds
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Fixed, e748, Sat Jul 8 11:42:43 2017, e748 Anastasia, D. , RUN, General, N/A, new Run 371
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Triggers MUST2 and CATS as before,
-rw-r--r-- 1 e748 Exxx 16M 8 juil. 11:43 run_0371.dat.08-07-17_11h41m39s
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Fixed, e748, Sat Jul 8 12:53:09 2017, e748 Anastasia, D. , RUN, General, N/A, RUN 371
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Changing Caviar thresholds during the run to find the optimum efficiency
More specific The DDM16_4 the channels 4 and 5 *
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Fixed, e748, Sat Jul 8 14:00:06 2017, e748 Anastasia, D. , RUN, General, CD2, Run 372
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Start new run with final CAVIAR threshold settings
HV slightly increased to 980V
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Fixed, e748, Sat Jul 8 16:39:00 2017, e748, RUN, General, CD2, Stop run 372 - CHIO digitizer lost parameters
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Fixed, e748, Sat Jul 8 16:41:57 2017, e748, RUN, General, CD2, Run 373
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Restart after rewriting parameters onto CHIO digitizer
Same conditions as previous run
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Fixed, e748, Sat Jul 8 17:04:25 2017, e748, RUN, General, CD2, RUN 374
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We stopped run 373 to check the MUVI scalers on the DAS.
We wrote the parameters onto the CHIO digitizer and restarted -> Run 374
Same conditions as before.
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Fixed, e748, Sat Jul 8 19:41:25 2017, e748, RUN, General, CD2, Run 374 (file change)
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19:29 data file change -> run_0374.dat.08-07-17_16h57m56s.2
Previous change : 18:11 -> run_0374.dat.08-07-17_16h57m56s.1
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Fixed, e748, Sat Jul 8 20:49:48 2017, e748, BEAM, General, CD2, Beam position on target
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| The beam spot on target has shifted upwards by ~3 mm since beginning of 10Be run (see run 366 and attached plot from run 374, July 8 20:48). |
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Fixed, e748, Sat Jul 8 21:04:07 2017, e748, BEAM, General, CD2, Update: beam position on target
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At ~21:00 we called PCP: They adjusted the DC41VE steerer to center vertically the beam on our target.
See attached plot.
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Fixed, e748, Sat Jul 8 21:53:58 2017, e748, BEAM, General, CD2, Scalers run 374
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Counting rates keep decreasing though the primary is still ~4.5 uAe and the beam is centered on our target.
We called François de Oliveira who helped us to print the parameters of the line. We go to the PCP with the print. |
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