 Sat Jun 8 06:13:21 2024, CB, Run 47/48/49 - target issues & tests 
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07:00
After putting the target back, we observe strong periodic (5 s) fluctuations going from 3E11 to 5E12. The reason is unclear. One may warm up
the target to solve this, but will ask Nikos later instead. |
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Sat Jun 8 00:14:39 2024, LB, Run 46 - background with beam 22x
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RUN 46- started at 00:50
Horizontal beam position = 4.0 mm, vertical beam position = -5.0 mm.
Detectors are Left arm OUT = 36.64, right arm IN = 64.60 mm |
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Fri Jun 7 22:33:13 2024, LB, Run 45 - tests on beam-target overlap
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Tried to double check beam-target overlap by changing beam horizontal coordinate.
In the tablethe counts in the 4000-5200 keV region in each of the detectors are recorded. Counts were taken for a total time of 5 minutes per
beam position. Attached are the xy plots. |
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Thu Jun 6 16:23:10 2024, LB CB JM, Run 39 - Run 40 15N 15x
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Started run 39.
We have the 15N+ beam with 426 keV/nucleon. We see a peak in detector top left (mostly) and bottom right, at 4600 keV. We think it is the beam |
 Fri Jun 7 15:53:35 2024, TD, DSSD leakage current increase - temperature increase in CRYRING hall
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Re-increase in DSSSD leakage current c. 14-15.00 6.6.24
There was a significant temperature spike in the CRYRING hall on the afternoon of 6.6.24 which has, partly, recovered - see attachment 1
Quote:
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Fri Jun 7 14:09:04 2024, JM, CB, DR, CN, LB, Run 44 - 15N Data Taking
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15:35
Electron cooler voltage set point = 244.3 V
Electron cooler voltage readout = 243.75 V |
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Fri Jun 7 10:05:40 2024, CB, Run 41/42/43 - 15N data taking start 8x
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11:05
Confirmed overlap is at 4 mm under new settings.
For unclear reasons, the bottom-left detector is not seeing the halo anymore since around 10:00. Rutherford still visible and if the left arm |
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Thu Jun 6 05:44:45 2024, DR YL DB LB CB JM, Run 38 - 15N Tests 8x
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06:45
All system checks OK
Target density 3.4e11 |
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Wed Jun 5 13:34:02 2024, JM, Run 37 - Change in thresholds
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14:20
Target nozzle currently being replaced. No beam
We have decided to switch to 15N beam from now on. |
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Wed Jun 5 13:21:45 2024, JM, CB, Run 36 - pulser walkthrough
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14:00
Access to the cave as Nikos and Andreas have begun work on the target.
Run 36 started - pulser walkthrough. |
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Wed Jun 5 08:34:04 2024, JM. DB, PC, Target nozzle change
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09:30
Target density has not improved despite efforts last night. Mid 10 - low 11 density range. We will try to change the nozzle.
Target nozzle moved to the out position. |
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Tue Jun 4 19:19:26 2024, TD, [How To] Recover DAQ when one FEE64 stops sending data
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1) STOP DAQ [workspace 2, display 1, browser tab 'Run Control']
all FEE64s should change status from 'going' to 'stopped' *except* whichever FEE64(s) have a problem - typically their status is 'going' or 'error'
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Tue Jun 4 18:08:04 2024, Boudefla Dounia - CB - LB - SD, Run 34 19x
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19:08
Beam energy = 3 MeV.
Horizontal beam position = 4.0 mm, vertical beam position = 0.0 mm. |
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Tue Jun 4 15:25:36 2024, BD US CB, Run 33
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16:26
Merger OK, Tape server OK
ADC data item statistics looks as before. OK |
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Tue Jun 4 14:13:17 2024, JM, CB, DB, US, Run 32- beam only background
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15:15
Run 32 started - Beam, no target
Beam energy = 3 MeV. |
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Tue Jun 4 06:56:02 2024, DFF, PC, LB, JM,NP,AB, Run 31 contd
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8:13
Since 6:40 the target density dramatically dropped to 10^9 since then it has been unstable and did not recover. Currently it is around 8e8.
09:00 |
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Tue Jun 4 00:04:39 2024, DR, EH, Run 31
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Beam energy = 3 MeV
Horizontal beam position = 4.0 mm, vertical beam position = 0.0 mm.
Beam intensity at inj ~ 2.5e7 |
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Mon Jun 3 21:37:20 2024, CN, EM, CB, Run30
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Beam energy = 3 MeV
Horizontal beam position = 7.0 mm, vertical beam position = 0.0 mm.
Beam intensity at inj ~ 2.5e7 |
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Mon Jun 3 15:17:41 2024, CN, EM, CB, Run29
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16:15
In the previous run while working on the target it was discovered that the valve was closed! Probaly this happened around 10 am, we are not sure.
The gas target inlet valve is open again, working on the target. |
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Mon Jun 3 15:10:12 2024, CN, EM, CB, Run28
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16:10
We start a new run after doing some test with the motor. Injection time is now a 6s, moving of the motors is working fine.
Merger OK, Tape server OK |
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Mon Jun 3 11:46:07 2024, SD, SHB, JM, CN, EM, Run 27 12x
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12:46 (attachments 1-4)
Run 27 started - Beam no target
Beam energy = 3 MeV |