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 eľA (on D6 TI22)
General DAQ 1Go during 1h30
For CHIO 1h30 data run ~12Mo
Strong primary beam instabilities (suddenly down to less than 1ľA) between 21h50 and 22h
At 21h55 Sili1 T5 has tripped. We put it on again (380V).
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run DAQ e748
-r--r--r-- 1 e748 Exxx 1000M 7 juil. 18:01 run_0368.dat.07-07-17_16h31m32s
-r--r--r-- 1 e748 Exxx 1000M 7 juil. 19:34 run_0368.dat.07-07-17_16h31m32s.1
r--r--r-- 1 e748 Exxx 1000M 7 juil. 21:13 run_0368.dat.07-07-17_16h31m32s.2
-rw-r--r-- 1 e748 Exxx 374M 7 juil. 21:50 run_0368.dat.07-07-17_16h31m32s.3
run chio e748chio
-rw-r--r-- 1 e748chio Exxx 43M 7 juil. 21:50 run_0368.dat.07-07-17_16h30m17s
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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 ľA 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 ľA
CATS2 ~ 94 kcps (2 pictures of CATS at 4 hours difference attached)
chio 89kcps Plastics 87kcps FAG ~ 180-190/s
cf Scalers at 23h48.
Sili 1/T5 has tripped (again) around 23h45.
1h00 3.5 ľA. Seems PCP intervened. 4.3 ľA at 1h05.
1h30 Gradually decreases, but still 4.0 ľA
1h30 Sili 1/T5 tripped. Turned on.
3h06 beam 3.7 ľA. Sili 1/T5 25.5 ľA.
3h25 beam 3.5 ľA -> 4.2 ľA. Sili 1/T5 25.6 ľA. CATS2 0.1 ľA.
4h25 if there is any need to enter the room, the PCP would like to re-tune the beam because it is shifting all the time
As it is not yet mandatory, we choose to keep it like that
4h43 SiLi T5 tripped, we switch it on again V=380V I=18uA
5h20 beam intensity has strongly decreased 5e4 pps --> PCP is working on it
5h38 beam is back at 1e5pps
stopped because CAVIAR was not there anymore
MUST2 bias/current
T1 80V I=1.6uA
T2 80V I=3.3uA
T3 70V I=1.0uA
T4 80V I=5.1uA
T5 80V I=1.0uA
T6 80V I=6.9uA
T7 60V I=0.6uA
T8 60V I=1.1uA
Temperatures -1.9°C/-0.3/0.3/1.6°C
e748
-r--r--r-- 1 e748 Exxx 1000M 7 juil. 22:52 run_0368.dat.07-07-17_16h31m32s.3
-r--r--r-- 1 e748 Exxx 1000M 8 juil. 00:21 run_0368.dat.07-07-17_16h31m32s.4
-r--r--r-- 1 e748 Exxx 1000M 8 juil. 01:47 run_0368.dat.07-07-17_16h31m32s.5
-r--r--r-- 1 e748 Exxx 1000M 8 juil. 03:11 run_0368.dat.07-07-17_16h31m32s.6
-rw-r--r-- 1 e748 Exxx 215M 8 juil. 03:29 run_0368.dat.07-07-17_16h31m32s.7
e748chio
-r--r--r-- 1 e748chio Exxx 2,1M 7 juil. 16:28 run_0367.dat.07-07-17_15h57m29s
-rw-r--r-- 1 e748chio Exxx 93M 8 juil. 03:30 run_0368.dat.07-07-17_16h30m17s |
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Fixed, e748, Sat Jul 8 06:02:18 2017, e748 Marlčne 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.
Caviar is back with the same efficiency as CATS, but the detector may be damaged.
6h04 SiLi T5 has tripped, switch on again
7h25 SiLi T5 tripped; switched on I=19,8uA
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Chio file
e748chio Exxx 584K 8 juil. 06:03 run_0369.dat.08-07-17_06h00m28s
MUST2 file
e748 Exxx 46M 8 juil. 06:04 run_0369.dat.08-07-17_06h00m38s |
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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.
gate;
target position on target
chio vs Qplastic rough Z=4
DSSD energy vs TOF mass=3 and no signal in CsI
Only MM1 is analized.
We need more statistics, but we can't analyze CsI data maybe because position matching with DSSD? |
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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.
gate;
target position on target
chio vs Qplastic rough Z=4
DSSD energy vs TOF mass=3 and no signal in CsI
Only MM1 is analized.
We need more statistics, but we can't analyze CsI data maybe because position matching with DSSD? |
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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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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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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
-rw-r--r-- 1 e748 Exxx 5,5M 8 juil. 11:35 run_0370.dat.08-07-17_11h34m13s |
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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
new CAVIAR thresholds |
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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 *
P.S. Lucia from the Lise team is here, working with Caviar |
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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
Scaler rate of CAVIAR is CATSx1.5 (same as before CAVIAR tripped)
Rest is unchanged
DDM16_1,DDM16_2,DDM16_6 all Channels 750
see the DDM16_3,DDM16_4, DDM16_5 |
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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
18O: 4.5 uAe
CATS1 98 kcps
CATS2 120 kcps
CHIO 115 kcps
220 events/s
SiLi 1/T5 : 380 V, 19.2 uA |
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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.
18O 4.5 uAe
CATS1 98 kcps
CATS2 120 kcps
CHIO 115 kcps
220 events/s |
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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
18O 4.6 uAe
CATS1 88 kcps
CATS2 108 kcps
CHIO 104 kcps
210 events/s
We note that although the 18O intensity is the same, the counting rates in CATS1, CATS2, CHIO and Plastic have decreased by 13 % since the beginning of run 374.
SiLi 1/T5: 380 V, 23.5 uA |
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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.
This has no impact on the counting rates in our detectors.
18O 4.5 uAe
CATS1 81 kcps
CATS2 101 kcps
CHIO 97 kcps
Plastic 96 kcps
200 events/s |
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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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