 Fri Apr 15 12:53:25 2022, Max, Danyal, Laser, checked laser pulse energy after change in wavelength range
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previous scan range:
the laser pulse energy @ 320.62 nm was ~11 mJ
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Fri Apr 15 20:43:18 2022, Konstantin, Laser, Dye changed
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| Dye of the laser system has been changed. UV laser power increased from ~8 mJ to 11 mJ pulse energy. |
Wed Apr 20 10:09:50 2022, Rodolfo, Laser, Optic with spots 
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The average energy produced by the laser along the beamtime was about 10 mJ/puls. After about two weeks of beamtime some of the optics, especially the optic
placed just after the BBO crystall, got some spots, see pictures below. Here the diameter of the laser beam is about 6 mm. |
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Wed Jul 28 13:31:22 2021, Rodolfo, General, Air filters
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| Filters (Hepa-) inside the flow boxes have been replaced. |
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Wed Sep 8 21:44:55 2021, Rodolfo, General, Preparation
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[TABLE border="1"]
[B]Status[/B]|[B]Arbeitspaket[/B]|[COLOR=chocolate][B]Kommentare[/B][/COLOR]
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Wed Mar 23 15:38:15 2022, Carsten, General, Not all lights in the ESR can be switched off
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Three of the lights in the ESR cannot be switched off. It seems that these lights are now "emergency lights" (with battery?). We will need to find dark
plastik foilor similar to cover those lights during our beam time |
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Sat Apr 2 05:08:00 2022, Kristian, General, Morning shift
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I see no updates in the log. Is the morning shift taking place?
For now I will stay at home and be on call. I can be at GSI in 20 min. Please let me know the status.
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Sat Apr 2 10:22:21 2022, Rui-Jiu Chen, Ragan, General, Beam is in the ESR
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| Primary beam is in the ESR now. Markus and the team are tuning the ESR. |
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Wed Apr 6 08:31:54 2022, Danyal & Regina, General, ESR had some errors
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Regina noticed that the ESR was "red"
This means that there are some errors.
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Thu Apr 7 08:14:03 2022, Yuri & Danyal, General, 229Th89+ line in Schottky
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GLOBAL calculations for the "content" of the Th line in the Schottky spectrum
(380 MeV/u exit energy, equilibrium charge state distribution)
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Thu Apr 7 14:04:36 2022, Paul Indelicato, General, no beam until 17:00
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10:10 There is a problem with the UNILAC.
The repair will take several hours. (4 hrs?)
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Sat Apr 9 05:00:11 2022, Carsten, General, Draft Docs and cheat sheet
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Please check the attached files,
and correct or enhance them.
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Mon Apr 11 10:31:07 2022, Kristian, Sebastian, Alexandre, Danyal, Paul, General, new laser wavelength scan range 322.41 - 322.00 nm
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new wavelength scan range is 322.41 - 322.00 nm
at 10:31
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Mon Apr 11 22:33:16 2022, Carsten, General, Backup of data to the external RAID disks
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Tue Apr 12 21:56:54 2022, Volker, David, Pierre-Michel & Danyal, Alexandre, Sebastian, General, new laser wavelength scan range 321.62 - 321.10 nm
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New wavelength scan range is [B]321.62 - 321.10 nm[/B]. Before the new scan range (compare old scan range in [URL=https://elog.gsi.de/esr/E142/215] Entry
215[/URL]) was applied,
the cooler settings were slightly modified. Current was changed from [B]50 mA to 40 mA[/B], correction voltage was changed from [B]3943 V to 3948 V[/B]. |
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Fri Apr 15 12:42:18 2022, Max, Danyal, Carsten, Konstantin, Patrick, Simon, General, laser wavelength range changed: 320.12 - 319.60 nm
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Runs of the morning/afternoon/night shift. The wavelength range is now 320.12 - 319.60 nm.
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Mon Mar 25 06:22:12 143, Ken Ueberholz, Detectors, XUV-Detector Rates
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Count rates were measured for the XUV-
detector for a full circle:
Cathode: -5V, shields: 0V, main coil 8A,
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Thu Oct 14 10:21:46 2021, Rodolfo, Detectors, Dismounting Cu-Mirror
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| We have dismounted the parabolic Cu-Mirror at ESR on 13.10.2021 |
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Thu Mar 3 17:21:26 2022, Rodolfo, Detectors, MgF2 Windows
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New reentrance viewports made of MgF2 have been installed at the ESR "Optical Detection Region". In the middle the old window (also MgF2) was kept into
place. |
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Wed Mar 16 12:04:40 2022, Kristian, Detectors, HV cable to particle detector South
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Checked HV cable to particle detector south. Label is HV2 Scraper.
Connected to Messplatz III HV5 |