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ID Datedown Author Category Subject Text Attachments
  84   Tue Mar 25 04:20:23 155 Ken UeberholzDetectorsXUV-Detector RatesCount rates were measured for the XUV-
detector for a full circle:
Cathode: -5V, shields: 0V, main coil 8A,
 Screenshot_20220404-000343_Gallery.jpgScreenshot_20220404-000327_Gallery.jpgScreenshot_20220404-000411_Gallery.jpg 
  237   Wed Apr 20 10:09:50 2022 RodolfoLaserOptic with spotsThe average energy produced by the laser along
the beamtime was about 10 mJ/puls. After
about two weeks of beamtime some of the optics,
 SHG_Compensator_mitFleck_19-04-2022.jpgUV_Umlenkspiegel_mitFleck_19-04-2022.jpg 
  236   Sat Apr 16 04:19:05 2022 Patrick, Simon, Alex, SarperRunsRuns night + morning shifts 16.04.Runs of the night shift 16.04. after changing
the wavelength range. The new range is 320.12
- 319.859 nm. The step size was decreased
  
  235   Fri Apr 15 20:43:18 2022 KonstantinLaserDye changedDye of the laser system has been changed.
UV laser power increased from ~8 mJ to 11
mJ pulse energy.
  
  234   Fri Apr 15 12:53:25 2022 Max, DanyalLaserchecked laser pulse energy after change in wavelength rangeprevious scan range: 
the laser pulse energy @ 320.62 nm  was ~11
mJ 
  
  233   Fri Apr 15 12:42:18 2022 Max, Danyal, Carsten, Konstantin, Patrick, SimonGenerallaser wavelength range changed: 320.12 - 319.60 nm
Runs of the morning/afternoon/night shift.
The wavelength range is now 320.12 - 319.60
 VoltageJump1830.PNG 
  232   Thu Apr 14 22:44:40 2022 Patrick, Simon, Danyal, MaxRunsRuns night shift 14./15.04.Runs of the night shift. The wavelength range
is 320.62 - 320.10 nm.
  
  231   Thu Apr 14 19:46:46 2022 Sarper & Konstantin & RodolfoLaserLaser powerWe checked the laser power before starting
the new scan range.
  
  230   Thu Apr 14 17:47:55 2022 Carsten, Rodolfo, Konstantin, SarperRunsAfternoon shift runs 14.04 changing the wavelength scan rangeThe new scan range is changed from [B]321.12
- 320.60 nm to 320.62 - 320.10 nm[/B]
  
  229   Thu Apr 14 12:38:38 2022 SebastianDetectorsXUV / Cu checkupsCheck regularly if the connection to the XUV
and Cu detectors are still active and the
detectors move in (after injection) and out
  
  228   Thu Apr 14 12:27:18 2022 Sebastian, MaxDetectorsConnection to XUV / Cu reestablished!The connection to the XUV and Cu were lost
during the nightshift.
  
  227   Thu Apr 14 10:57:11 2022 CarstenAcceleratorMaintanence UNILAC / Op trainingWe had no beam since about 1000. Also, we
are still trying to find out why we have
such a low intensity in the expereimnt. 
  
  226   Thu Apr 14 08:41:42 2022 CarstenAcceleratorLow intensity at the experiment after series of failures during the nightAfter the recovery from the failures during
the night, we see much lower intensity at
the experiment (measured with the particle
  
  225   Thu Apr 14 06:29:18 2022 Max, SebastianAcceleratorlesser ESR injection intensityWe now have less ESR injection intensity (see
screenshot attached).
 2022_04_14-lowCountRate-LesserESRInjection-SchottkyIntensity.JPG 
  224   Wed Apr 13 15:41:29 2022 Rodolfo & SarperLaserLaser statusWe have checked the power of the laser and
optimized it "a bit".
  
  223   Wed Apr 13 14:29:04 2022 Carsten, Rodolfo, Sarper, David, Pierre-Michel, Max, SebastianRunsAfternoon - morning shift runs 13.+14.04.Changed the wavelength scan range from [B]321.62
- 321.10 nm[/B] to [B][B]321.12 - 320.60[/B]
nm[/B] after one scan.
 coolerProblemsAndFragments.JPGfragments.JPGBroaderIonBeam.JPGagainNormalWidth.JPG 
  222   Tue Apr 12 21:56:54 2022 Volker, David, Pierre-Michel & Danyal, Alexandre, SebastianGeneralnew laser wavelength scan range 321.62 - 321.10 nmNew 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]
 Ecooler12VdropOn13_04_22_9_52am.pngEcooler18VEcoolerJumpOn13_04_22_13_18pm.png 
  221   Tue Apr 12 17:01:30 2022 KonstantinDetectorsVoltage PMT NorthVoltage of PMT North has been increased from
2500 V to 2600 V. Additionally the threshold
was adapted from 25 mV to 12 mV.
  
  220   Tue Apr 12 15:05:56 2022 RodolfoLaserLaser statusWe have checked the laser power at 14:15 *

- Pump energy after Q-Ray @ 532nm: 559 mJ.
  
  219   Tue Apr 12 14:52:19 2022 RodolfoDetectorsPMT Nord, Middle. DatasheetsAttached are the datasheets for the solar-blind
PMTs.
 ET-Enterprises_DataSheets_PMT_9423-9422.pdf 
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