 Thu Jun 6 19:47:01 2024, Carsten, DAQ, Exchange of Mesytec CFD/shaper - noise on signal lines from ESR magnets
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Jan exchanged the Mesytec CFD/shper since it could not be "remote controlled" anymore. The new one has different shaping times and delays.
It is noted the threshold range is rather small.
With the new shaper only the x100 signals could meaningfully discriminated etc.
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Thu Jun 13 14:56:09 2024, Stefan Schippers, Accelerator, Estimated beam lifetime: About 150 s
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Estimate of storage lifetime using my code 'hydrocal':
ion mass in u ...................................: 229
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Thu Apr 25 16:34:05 2024, Rodolfo, Laser, Efficiency of Fluorescein27 
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The figure below shows the efficiency of Fluorescein27 vs. Wavelength. Each point was averaged over 500 laser shots.
Dye Laser: Sirah, Cobra Strech.
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Thu Jun 6 19:51:11 2024, Carsten, Accelerator, ESR crew left after persisting problems with ESR magnets
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| No beam today.--. |
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Wed Jun 5 14:17:36 2024, Carsten, Accelerator, Distance Cooler Detector
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Calculation from Helmut Weick (copied from E142)
Distance e-cooler to particle detectors chamber:
“This is half of ESR plus distance target - detector. This even is on the web page”
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Fri Jun 14 13:14:29 2024, Konstantin, Bernhard, Peter, Lukas, General, DAQ crashes at :10
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10 Minutes past a full hour (XX:10) the windows PCs (sometimes) loose connection.
This causes the labview server & the laser remote ctrl to crash.
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Sat Jun 1 18:14:01 2024, Carsten, Analysis, DAQ and analysis directories
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[U][B]DAQ1 (original):[/B][/U]
-user atplaser
-runs on lxg1297
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Fri Jun 14 11:44:23 2024, Carsten Brandau, Accelerator, Cooling Time in SC7 increased from 9s to 12s
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| Cooling Time in SC7 increased from 9s to 12s |
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Thu Jun 13 18:03:36 2024, Afternoon shift, Runs, Continuation: First scans
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[TABLE border="1"]
Time | Part. Det. Int | ESR-intensity| cooler-HV | LMD-DAQ1 Files | LMD-DAQ2 Files | scan range(nm) | number of positions | dwell time(s) | n loops | comments
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Sat Jun 1 19:00:57 2024, Carsten, DAQ, Change of (offline) frequency for common stop (CS) of VUPROMs (and 2nd TDC) and scaling factor
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Temporarily, for tests of the second DAQ I changed the frequency from the frequency generator and scaling factor that is used for the common stop signal
to a value that is close to the expected value in the experiment.
Reason: For the second TDC (CAEN 25ps) TDC the time between to CS events must be of the order of 45 us. The TDC can store events up to about 51,x us and |
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Wed Jun 12 22:48:55 2024, Carsten, , Beam Halo
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The seamingly short live time reported in [URL=https://elog.gsi.de/esr/E0052/53]entry 53[/URL] is due to a halo from a different isotope (?). It can be
scraped away from the outside. The 229Th89+ primary beam can be scaped away from the inside and the halo stays. There is some spacial headroom between
the two components.
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Fri Jun 14 14:44:51 2024, Afternoon shift, Runs, Afternoon shift
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Pizza shift
[B]the scan direction is from higher wavelength to lower wavelength, even though it is noted otherwise here in the software.
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Sun Jun 2 00:01:46 2024, Carsten, DAQ, 25ps TDC CAEN V1290N DAQ2 lead to crash in DAQ2 due to a hardware issue
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On the CAEN V1290N TDC the piggy board for the lower 8 channels is not fixed well to the motherboard.
That prevented to the whole DAQ2 to trigger correctly or even crash every once in a while. Long attempt sot find the error in hard and in software.
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Thu Jun 13 10:32:29 2024, Konstantin, Accelerator, (Proper) Cooler settings
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We change the acceleration voltage of the electron cooler and observe the platform high voltage and the count rate at the particle detector south.
Cooler current at 100mA.
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