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  Laser Cooling Experiment 2021, Page 1 of 5  Not logged in ELOG logo
ID Date Author Category Subject Text Attachments
  85   Tue May 31 07:29:11 2022 KenDetectorsXUV-DetektorRate was very low: ~ 100Hz
Adjusted Walk level and Threshold, new rate:
5kHz
  
  84   Mon May 17 21:43:56 2021 DanyalGeneralThe test beamtime was a success.Dear all,

The test beamtime is now over. 
  
  83   Mon May 17 08:05:42 2021 TeamGeneralEnd of beamtime~ 8 a.m.   
  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):
  
  81   Sun May 16 21:23:02 2021 TeamGeneralESR OPEN -> preparation for Polarisation Tests    
  80   Sun May 16 11:29:22 2021 BenediktGeneralAutomated laser scans workingThe automated laser scans are working now.
We can now scan with the following functions:
triangle, sawtooth, cosinus/sinus, arctan,
  
  79   Sun May 16 07:18:56 2021 Night Shift Sebastian/Max/NoahGeneralPreparation for automated laser scansWe shut the laser system down to prepare automated
laser scans
  
  78   Sun May 16 07:03:07 2021 TeamGeneralLaser cooling with 166psWe saw some indications of laser cooling @
166ps pulse length
  
  77   Sun May 16 06:13:46 2021 TeamGeneralSwitch to 166ps     
  76   Sun May 16 05:24:00 2021 TeamGeneralLaser cooling with 285pswe also see laser cooling with 285ps pulse
length
  
  75   Sun May 16 05:09:27 2021 TeamGeneralSwitch to 285pspulse length -> 285ps

minimum 62mW inside ESR (depending on laser
  
  74   Sun May 16 05:09:04 2021 TeamGeneralLaser cooling with 482pswe see laser cooling with 482ps pulse length   
  73   Sun May 16 02:28:21 2021 TeamGeneral#Beam ON!Laser specs:
pulse length -> 482ps
  
  72   Sun May 16 02:22:19 2021 SebastianGeneral"Der Laser ist ok"    
  Draft   Sun May 16 02:20:58 2021 SebastianGeneral"Der Laser ist (wieder) ok"    
  70   Sun May 16 02:18:53 2021 SebastianGeneralUV Drop1:25 a.m. huge drop in UV laser power
-> small crystal bump with both y screws
of bbo oven
  
  69   Sat May 15 12:11:54 2021 BenediktGeneralLaser-bunch-timingOptimizing the laser bunch timing.
h = 7 (9.0389145 MHz)
Reprate is already set to same frequency.
  
  68   Sat May 15 11:26:44 2021 BenediktGeneralTEM parametersWe changed the horizontal position of the
laser beam a bit, so that we maximized the
fluorescence signal on the XUV detector (coasting
  
  67   Sat May 15 11:06:31 2021 BenediktGeneralNew Zoom link for the momenthttps://tu-darmstadt.zoom.us/j/4948400422?pwd=SEJaUzBuYXM0TTd6UWxoZTFlWEZxUT09

Meeting ID: 494 840 0422
  
  66   Sat May 15 09:57:24 2021 DayshiftRunsCurrently on schedule Enhance fluorescence rate and perform 
laser bunch timing 
  
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