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  Laser Cooling Experiment 2021, Page 3 of 5  Not logged in ELOG logo
New entries since:Thu Jan 1 01:00:00 1970
ID Date Author Category Subjectdown Text Attachments
  12   Wed May 12 08:41:36 2021 SebastianAnalysisLaser stabilityDuring night shift the laser was very stable!
Only minor fluctuations occured in the UV
  
  13   Wed May 12 08:42:49 2021 SebastianAnalysisLaser scans / coastig beam / no ecoolerAttached you'll see a first laser scan of
~100GHz in the UV.
 Screenshot_(156).png 
  29   Wed May 12 23:45:23 2021 Ken UeberholzGeneralLaser does not reach the exit windowHigh rates on the detector at 50mm positions,
laser does not seem to reach the exit window.
  
  74   Sun May 16 05:09:04 2021 TeamGeneralLaser cooling with 482pswe see laser cooling with 482ps pulse length   
  76   Sun May 16 05:24:00 2021 TeamGeneralLaser cooling with 285pswe also see laser cooling with 285ps pulse
length
  
  78   Sun May 16 07:03:07 2021 TeamGeneralLaser cooling with 166psWe saw some indications of laser cooling @
166ps pulse length
  
  65   Sat May 15 09:50:31 2021 TeamRunsLaser cooling of.... H=2
H=7
H=10
  
  27   Wed May 12 22:57:41 2021 SebastianGeneralLaser Repratelaser reprate is seven times the revoolution
frequency: 9.038283 MHz
pulse length: 735ps
  
  82   Sun May 16 22:11:49 2021 TeamGeneralLaser Polarisation valuesmaximal transmission of PBSC (257/514 pbsc
was used in combination with xlp12 detector
and visual on a screen):
  
  56   Fri May 14 11:01:33 2021 BenediktCalibrationLaser Beam adjustedThe laser beam was adjusted in his position
to overlap better with the ions.
  
  14   Wed May 12 09:04:48 2021 SebastianDAQKeysight AUtoCal   IMG_20210510_143940_resized_20210512_090353546.jpg 
  Draft   Wed May 12 02:16:25 2021 Danyal, LarsAcceleratorIon beam positionLaser Position with scrapers verified. 
1HA: impossible to scratch laser beam, still
there at -1.0 mm
  
  16   Wed May 12 09:09:15 2021 SebastianDAQFluorescencefluorescence with detector in parking position
fixed laser wavelength
electron cooling ON, 
 1029967nm.png 
  83   Mon May 17 08:05:42 2021 TeamGeneralEnd of beamtime~ 8 a.m.   
  63   Sat May 15 09:22:41 2021 Sebastian AcceleratorEkühler Settings für Ekühler an und aus in SC4 und

5
 IMG-20210515-WA0000.jpgB5FE1031-7FFD-44D3-92B0-75E0784718D9.jpeg 
  64   Sat May 15 09:23:52 2021 SebastianAcceleratorEkühlerTab "Kühler Elektronenstrahl"
An Gerät schicken
  
  55   Fri May 14 09:40:04 2021 NightshiftRunsEcooling vs laser wavelength shift, coasting beam, laser stronger than EcoolingLast three pictures where taken after 
first laser ion beam overlap adjustments
 IMG-20210514-WA0017.jpg 
  37   Thu May 13 02:45:29 2021 SebastianAnalysisESR pressure   8x 
  35   Thu May 13 01:55:15 2021 SebastianGeneralESR amplifier reset / laser checkwe had to go into the ESR because the amplifiers
hooked up. both amplifiers were resetted!
 IMG_20210513_014345_resized_20210513_015540959.jpgIMG_20210513_014353_resized_20210513_015541291.jpg 
  59   Fri May 14 22:04:25 2021 TeamAcceleratorESR OPEN ; NO BEAM -> Reset cooling devicewe had to open the ESR to reset a cooling
device
  
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