 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 |
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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Wed May 12 23:45:23 2021, Ken Ueberholz, General, Laser does not reach the exit window
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| High rates on the detector at 50mm positions, laser does not seem to reach the exit window. |
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Sun May 16 05:09:04 2021, Team, General, Laser cooling with 482ps
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| we see laser cooling with 482ps pulse length |
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Sun May 16 05:24:00 2021, Team, General, Laser cooling with 285ps
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| we also see laser cooling with 285ps pulse length |
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Sun May 16 07:03:07 2021, Team, General, Laser cooling with 166ps
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| We saw some indications of laser cooling @ 166ps pulse length |
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Sat May 15 09:50:31 2021, Team, Runs, Laser cooling of....
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H=2
H=7
H=10
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Wed May 12 22:57:41 2021, Sebastian, General, Laser Reprate
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laser reprate is seven times the revoolution frequency: 9.038283 MHz
pulse length: 735ps |
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Sun May 16 22:11:49 2021, Team, General, Laser Polarisation values
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maximal transmission of PBSC (257/514 pbsc was used in combination with xlp12 detector and visual on a screen):
L/4 @ 276° & L/2 @ 348° --> p-polarized light
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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 09:04:48 2021, Sebastian, DAQ, Keysight AUtoCal
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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 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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Mon May 17 08:05:42 2021, Team, General, End of beamtime
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| ~ 8 a.m. |
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Sat May 15 09:22:41 2021, Sebastian , Accelerator, Ekühler
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Settings für Ekühler an und aus in SC4 und
5 |
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Sat May 15 09:23:52 2021, Sebastian, Accelerator, Ekühler
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Tab "Kühler Elektronenstrahl"
An Gerät schicken |
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Fri May 14 09:40:04 2021, Nightshift, Runs, Ecooling vs laser wavelength shift, coasting beam, laser stronger than Ecooling
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Last three pictures where taken after
first laser ion beam overlap adjustments
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Thu May 13 02:45:29 2021, Sebastian, Analysis, ESR pressure 8x
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Thu May 13 01:55:15 2021, Sebastian, General, ESR amplifier reset / laser check
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we had to go into the ESR because the amplifiers hooked up. both amplifiers were resetted!
we also checked why we didnt see the laser at the exit window.
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Fri May 14 22:04:25 2021, Team, Accelerator, ESR OPEN ; NO BEAM -> Reset cooling device
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| we had to open the ESR to reset a cooling device |