 Tue May 31 07:29:11 2022, Ken, Detectors, XUV-Detektor
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Rate was very low: ~ 100Hz
Adjusted Walk level and Threshold, new rate: 5kHz
Additionally, parameters of the detector were varied for optimization but were returned to default afterwards. |
Tue May 11 16:07:59 2021, Sebastian, DAQ, DAQ Manual 
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| Attached you'll find a short manual for operating the whole DAQ system |
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Wed May 12 09:04:48 2021, Sebastian, DAQ, Keysight AUtoCal
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Wed May 12 09:05:48 2021, Keysight Settings, DAQ,
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Wed May 12 09:09:15 2021, Sebastian, DAQ, Fluorescence
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fluorescence with detector in parking position
fixed laser wavelength
electron cooling ON,
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Wed May 12 10:15:47 2021, Volker Hannen, DAQ, Unplugged TDC inputs for MCP front and back
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To reduce the load on the VUPROM TDC, we unplugged the TDC inputs for the front and back signals of the MCP of the XUV detector.
The Anode signal is still plugged in and should be sufficient for the analysis. |
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Wed May 12 23:36:18 2021, Ken Ueberholz, DAQ, VI change
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carbon main vi - kopie is now in operation
here, in keysight.vi the input settings for the new impedence for the multimeter are now hopefully correct --> THIS SHOULD BE CHECKED IF THE RING IS OPEN |
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Thu May 13 00:58:53 2021, Danyal, DAQ, unbunched ion beam
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Thu May 13 01:01:27 2021, Danyal, DAQ, bunched ion beam
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Thu May 13 01:05:45 2021, Danyal, DAQ, more stability by bunching
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Because the C3+ part of the ion beam is properly bunched, it is no longer so sensitive to the drifts caused by the e-cooler.
In the O4+ part of the ion beam these drifts can still be seen. |
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Fri May 14 11:01:33 2021, Benedikt, Calibration, Laser Beam adjusted
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The laser beam was adjusted in his position to overlap better with the ions.
Ion beam is destroyed at scraper position 1VO 6 mm and 2VO 4 mm; the laser beam looses half its power at 1VO 6mm and 2VO 4 mm.
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Wed May 12 08:32:04 2021, Sebastian, Analysis, fluorescence & energetic overlap
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During the night shift we saw several rises of the fluorescence (see another entry) and also energetic overlap in coasting beam modus.
Here the laser wavelength was stabilized @ 1028,967nm and electron cooler was switched off because of some fluctuations which we saw in the schottky.
Left part of the schottky picture shows the c3+ beam, the right part is the o4+ contamination. |
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Wed May 12 08:41:36 2021, Sebastian, Analysis, Laser stability
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| During night shift the laser was very stable! Only minor fluctuations occured in the UV |
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Wed May 12 08:42:49 2021, Sebastian, Analysis, Laser scans / coastig beam / no ecooler
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| Attached you'll see a first laser scan of ~100GHz in the UV. |
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Thu May 13 02:45:29 2021, Sebastian, Analysis, ESR pressure 8x
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Fri May 14 06:34:45 2021, Team #Night, Analysis, DSG821 IP
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| 140.181.104.108 |
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Wed May 12 02:16:25 2021, Danyal, Lars, Accelerator, Ion beam position
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Laser Position with scrapers verified.
1HA: impossible to scratch laser beam, still there at -1.0 mm
2HA: +3mm --> half the laser power on detector; +4.5mm --> gone |
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Wed May 12 10:14:18 2021, Lars, Accelerator, E-Cooler
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M.Steck et al. discussed about the E-Cooler and found a possible issue. They asked for enterance to the ESR. Since nobody else was in the HKR and anyway
nothing was running because of some other issues, I told, the experiment would not be disturbed and they could enter and do things. (Sth. like putting
some repeller electrodes onto hand and other magical things).
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Wed May 12 13:11:58 2021, Danyal, Accelerator, short break between 13:30 and 15:30
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There will be a short break (2 hours) this afternoon. Between 13:30 and 15:30.
The so-calles "super lense" in the UNILAC needs to be cleaned (rinsed).
After that operation should continue as usual. |
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Wed May 12 15:36:04 2021, Danyal, Accelerator, general power failure in ESR! (everything is off)
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The power in the ESR is off.
(also on the gas-target area on top of ESR)
Electrical engineers are trying to find and fix the problem. |