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Ongoing, e755, Sat Jun 23 19:10:23 2018, Nori, OFFLINE, General, Cryo-LH2,
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Fixed, e755, Sat Jun 23 19:41:49 2018, Valerian, OFFLINE, General, Cryo-LH2, De_E plot 
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Fixed, e755, Sat Jun 23 19:23:19 2018, Nori, OFFLINE, General, Cryo-LH2, 40Ca(p,d) analysis 7x
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Analysis of run0072 (two hours accumulation).
Attachment 1:
Reconstructed beam image. The ring should correspond to the cell's frame.
Attachment 2:
Definition of cuts. The central region of the target was selected and then named "targ".
Attachment 3:
Particle identification. Deuterons are well separated.
Attachment 4:
Elab-theta plot. The target and deuteron cuts were applied. Kinematics curves of the (p,d) reactions are seen.
Attachment 5:
Elab-theta again. Calculated kinematics curves were superimposed.
An energy correction factor of 0.8 has to be introduced to reproduce the curves (probably due to the incomplete energy calibration).
In addition to the ground-state transition, excited states with spectroscopic factors larger than 0.4 are also shown. See PRC 48, 95 (1993) for the details.
Attachment 6:
Angular distribution of 40Ca(d,p)39Ca(1/2+) from the reference. A similar oscillating pattern was observed in the Elab-theta plot.
EDIT: the deviation from the kinematics was due to an incorrect beam energy. |
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Fixed, e755, Sat Jun 23 20:07:49 2018, Nori, OFFLINE, General, Cryo-LH2, 40Ca(p,d) analysis
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Order-of-magnitude estimate of the target thickness.
We have about 5000 counts of 40Ca(p,d)39Ca(g.s.) in an angular range of 10-30 degrees.
The total beam flux is calculated as follows.
2 hours x 1.5 x 10^5 pps = 1 x 10^9 particles
About half is on target -> 5 x 10^8 particles
By assuming the 5-mb cross section (integrated with respect to the cm angle),
and ignoring the Jacobian and the detector coverage, we get
thickness = 5000 counts / (5 mb x 5 x 10^8 particles) = 2 x 10^21 cm^-2
c.f. 1-mm thick solid hydrogen 4 x 10^21 cm^-2 |
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Fixed, e755, Sat Jun 23 20:09:00 2018, e755 - Louis, Valérie, RUN, General, Cryo-LH2, Summary of Runs 83 and 84 19x
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CATS beam 1.7 10**5 /s
Run 84 start @ 19h54 stop @ 20h16 on problem with CO.
the PCP said: Maybe 10 minutes of beam stop. Let's see.
==========================================================================================
e748 Exxx 51110971 23 juin 19:46 /data/e748X/e755/acquisition/run/run_0083.dat.23-06-18_19h29m47s
e748 Exxx 469310055 23 juin 20:16 /data/e748X/e755/acquisition/run/run_0084.dat.23-06-18_19h54m06s
========================================================================================== |
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Fixed, e755, Sat Jun 23 20:56:15 2018, e755 - Louis, Valérie, RUN, General, Cryo-LH2, Run 85
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CATS beam 1.8 10**5 /s
Beam back at 20h46
Run 85 start @ 20h46 stop @21h02
We stop the beam to enter in D6 area to empty the target.
==========================================================================================
e748 Exxx 427563975 23 juin 21:02 /data/e748X/e755/acquisition/run/run_0085.dat.23-06-18_20h46m25s
========================================================================================== |
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Fixed, e755, Sat Jun 23 21:17:03 2018, e755 - Louis, Daisuke,Shumpei, Takeshi, Nori, Valérie, RUN, General, Cryo-LH2, Run 86-Test measurement, (heating target)
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CATS beam 1.8 10**5 /s
Target temperature increasing during the run.
Run 86 start @ 21h05 stop @21h41
==========================================================================================
e748 Exxx 574662435 23 juin 21:42 /data/e748X/e755/acquisition/run/run_0086.dat.23-06-18_21h14m01s
========================================================================================== |
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Fixed, e755, Sat Jun 23 21:51:04 2018, e755 - Louis, Daisuke,Shumpei, Takeshi, Nori, Valérie, RUN, General, Cryo-LH2, Run 87-Empty target measurement
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CATS beam 1.8 10**5 /s
Run 87 start @ 21h42 stop @ 21h52
==========================================================================================
e748 Exxx 108503761 23 juin 21:52 /data/e748X/e755/acquisition/run/run_0087.dat.23-06-18_21h42m39s
========================================================================================== |
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Fixed, e755, Sat Jun 23 21:52:01 2018, takeshi, TARGET, Hardware, N/A, evaporation of the H2 target
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Here is the temperature log when we evaporate the liquid H2 by heater.
The black line is what we call sensor A, which we monitor usually, and the red line is sensor B, which is the closest sensor to the target window. |
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Fixed, e755, Sat Jun 23 22:03:17 2018, takeshi, TARGET, Hardware, , temperasure log of the target
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I would report the temperature log of the liquid hydrogen target.
We consider it was liquid during the beam time up to now by the beam profile data on the target. |
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Fixed, e755, Sat Jun 23 22:08:43 2018, e755 - Louis, Daisuke,Shumpei, Takeshi, Nori, Valérie, RUN, General, Cryo-LH2, Run 88-Empty target measurement 10x
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CATS beam 1.8 10**5 /s
Run 88 start @ 22h07
empty target
stoped @ 23h27 because of decrease of the beam intensity
==========================================================================================
========================================================================================== |
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Fixed, e755, Sat Jun 23 22:42:33 2018, e755 - Louis, Valérie, MUST2, Hardware, Cryo-LH2, Status of MUST2 telescopes 23 june 18
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Temperatures on the Mufeex-Y cards:
Temperature set on the regulator -4°C.
----------------------------------------------------
T1 X 5°C | T1Y 2°C
----------------------------------------------------
T2 X 6°C | T1Y 2°C
----------------------------------------------------
T3 X 4°C | T1Y 1°C
--------------------------------------------------
T4 X 3°C | T1Y 1°C
----------------------------------------------------
T5 X 6°C | T1Y 4°C
----------------------------------------------------
T6 X 10°C | T1Y 2°C
---------------------------------------------------
T7 X 2°C | T1Y electronic probe is not running well: !!! -127 (128= 2**7)
----------------------------------------------------
T8 X 8°C | T1Y 6°C |
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Fixed, e755, Sat Jun 23 22:47:21 2018, daisuke, TARGET, Hardware, N/A, Target images for Liq. H and empty target
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Attachment 1: RUN 85 with liq.H
Attachment 2: RUN 88 with empty cell.
counting rate in MUST2 decreased about 50% when evacuated the hydrogen |
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Fixed, e755, Sat Jun 23 23:31:12 2018, e755 - Louis, Valérie, RUN, General, Cryo-LH2, Run 89-Empty target measurement
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CATS beam 1.5 10**5 /s
Run 89 start @ 23h29
empty target
=============================================
restarted after beam tuning,
Beam was shifted in y direction as shown on the picture
to be fixed tomorrow
============================================= |
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Fixed, e755, Sat Jun 23 23:38:32 2018, takeshi, RUN, Social, Cryo-LH2, run summary for 40Ca beam
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run 63-85, total 15.4 hours data was taken
start stop duration runname
23-06-18 01:29:34 23 juin 02:03 00:34 run_0063.dat.23-06-18_01h29m34s
23-06-18 02:12:56 23 juin 03:06 00:54 run_0064.dat.23-06-18_02h12m56s
23-06-18 03:06:44 23 juin 04:33 01:27 run_0065.dat.23-06-18_03h06m44s
23-06-18 04:33:17 23 juin 05:06 00:33 run_0066.dat.23-06-18_04h33m17s
23-06-18 05:06:22 23 juin 05:18 00:12 run_0067.dat.23-06-18_05h06m22s
23-06-18 05:28:57 23 juin 05:42 00:14 run_0068.dat.23-06-18_05h28m57s
23-06-18 05:58:58 23 juin 07:22 01:24 run_0069.dat.23-06-18_05h58m58s
23-06-18 07:22:24 23 juin 07:27 00:05 run_0070.dat.23-06-18_07h22m24s
23-06-18 07:51:25 23 juin 08:19 00:28 run_0071.dat.23-06-18_07h51m25s
23-06-18 08:18:47 23 juin 10:10 01:52 run_0072.dat.23-06-18_08h18m47s
23-06-18 10:10:12 23 juin 12:05 01:55 run_0073.dat.23-06-18_10h10m12s
23-06-18 12:24:39 23 juin 12:32 00:08 run_0074.dat.23-06-18_12h24m39s
23-06-18 12:56:41 23 juin 14:11 01:15 run_0075.dat.23-06-18_12h56m41s.20
23-06-18 14:16:48 23 juin 14:19 00:03 run_0075.dat.23-06-18_14h16m48s
23-06-18 14:20:18 23 juin 14:21 00:01 run_0076.dat.23-06-18_14h20m18s
23-06-18 14:27:56 23 juin 15:00 00:33 run_0077.dat.23-06-18_14h27m56s
23-06-18 15:05:57 23 juin 15:28 00:23 run_0078.dat.23-06-18_15h05m57s
23-06-18 15:31:35 23 juin 16:26 00:55 run_0079.dat.23-06-18_15h31m35s
23-06-18 16:28:54 23 juin 16:32 00:04 run_0080.dat.23-06-18_16h28m54s
23-06-18 17:27:37 23 juin 18:31 01:04 run_0081.dat.23-06-18_17h27m37s
23-06-18 18:31:25 23 juin 19:10 00:39 run_0082.dat.23-06-18_18h31m25s
23-06-18 19:29:47 23 juin 19:46 00:17 run_0083.dat.23-06-18_19h29m47s
23-06-18 19:54:06 23 juin 20:16 00:22 run_0084.dat.23-06-18_19h54m06s
23-06-18 20:46:25 23 juin 21:02 00:16 run_0085.dat.23-06-18_20h46m25s |
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Fixed, e755, Sun Jun 24 09:48:46 2018, Francois, BEAM, General, , No beam
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9H10: D5 stopped at 9H10. We asked for the beam.
9H48: Still no beam. There is a problem with the beam current limits set in the accelerator. They have to change it from 40 nAe between CO1 and CSS1 to 3.8 µAe after CSS2.
10H05: Still no beam. Vincent arrived for the air conditioning of D6.
10H23: No beam. They have to re-align the beam in the alpha line.
11H45: Beam is back after alignment of the entrance of the LISE line |
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Fixed, e755, Sun Jun 24 12:10:35 2018, takeshi, TARGET, Hardware, , target temperature during warming up
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I would share the temperature log of the target cell during warming it up.
The thick line is the heat shield and the thin line is the cell.
The heat shield may takes 2 hours to reach 200 K and 6 hours for 270K.
Note that we need 45 minutes to evaporate liquid hydrogen before warming up. |
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Fixed, e755, Sun Jun 24 13:20:51 2018, takeshi, TARGET, Hardware, N/A, start target cooling
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We started cooling the target cell at 13h03.
It would take 4 - 5 hours to cooling the cell enough low for liquifying hydrogen.
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Fixed, e755, Sun Jun 24 13:25:30 2018, Fred, valérian, daisuke, DAQ, Software, N/A, Scalers to be recorded
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The U2M scaler data cannot be recorded to the data in the current version of Narval. So there were no scaler data during the measurement of 40Ca.
To resolve the situation, we added register parameters for specified channels of U2M. This allows us to record the counts of a given channel at each event.
Here is the procedure by Fred
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dans l'onglet Parametres de l'U2M, créer un "parametre sur registre" en choisissant le registre U2M_SCALERS et l'item correspondant à la voie désirée (item 0 pour la première voie, item 1 pour la deuxième voie...).
Sauver la config DAS (donc attention à ce qu'elle soit entièrement correcte, notamment pour les MUVI ...).
Ouvrir le fichier action, ajouter "READ/PARAM=nom_du_parametre"
Suaver le fichier action puis le compiler.
INIT dans le Run Control.
Relanceer le online.
---
Notes:
- the parameter name should be 15 characters or shorter. If not, the compilation will take forever.
- More registers, more dead time. So we included only CATS, CAVIAR, Plastic, DT and 100 Hz clock. |
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Fixed, e755, Sun Jun 24 16:11:38 2018, daisuke, ONLINE, Software, N/A, Automated screenshot
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automated screenshot commands
shot: Capture the window selected by the mouse
shotall: Capture the current display
shotvisu: Capture Vigru window
shotsca: Capture Scaler window
shotdas: Capture DAS window
shotrc: Capture Run controller window
img: Move to the save folder /home/e748/Images/e738_e755
Shotcut icons are available on the Desktop (in the picture in the attachment 1).
PNG images will be stored to:
/home/e748/Images/e738_e75
The macros are in the same directory.
/home/e748/Images/e738_e755/screenshot.sh
*** To capture a window, move to the workspace where the given window exists. The window is not necessary to be active, but should be unfolded. |
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Fixed, e755, Sun Jun 24 19:51:09 2018, Faïrouz, daisuke, MUST2, Software, N/A, MUST2 threshold from 1 MeV to 0.4 MeV
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It was found that the energy threshold of the strips was as high as 1 MeV. This threshold setting was chosen for the calibration and was never set back to the nominal threshold (0.4 MeV) for experiments.
Lowered to 0.4 MeV.
Note that due to the low energy threshold, triton of energies higher than 70 MeV were partially rejected during the measurement of 40Ca(p,t). |
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