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  Laser Cooling Experiment 2021, Page 1 of 5  Not logged in ELOG logo
ID Date Authordown Category Subject Text Attachments
  19   Wed May 12 10:15:47 2021 Volker HannenDAQUnplugged TDC inputs for MCP front and backTo reduce the load on the VUPROM TDC, we unplugged
the TDC inputs for the front and back signals
of the MCP of the XUV detector.
  
  45   Fri May 14 04:50:46 2021 Team #NightGeneralScraper Tests Ion / Laser Beamlaser is 4-6mm below the ion beam.
It could be that the interaction between
both beams came only from the interaction
  
  46   Fri May 14 06:34:45 2021 Team #NightAnalysisDSG821 IP140.181.104.108   
  47   Fri May 14 06:35:55 2021 Team #NightGeneralAdjustment of Laserwe increased the height of the laser beam

TEM Settings
  
  48   Fri May 14 07:20:18 2021 Team #NightGeneralactual bunching frequency25,82556 MHz
h = 20
  
  Draft   Fri May 14 07:33:42 2021 Team #NightGeneralecooler central frequency shifted relative to bunch central frequency    
  44   Fri May 14 01:34:44 2021 TeamGeneralstrange XUV Anode signalWe see a strange behavior of the anode signal
when we bunch the ion beam and electron cooler
is on.
 Screenshot_(68).png 
  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
  
  60   Fri May 14 22:20:37 2021 TeamAcceleratorESR Closed - BEAM #ON!    
  61   Sat May 15 03:39:16 2021 TeamGeneralactual revolution frequencyfrev = 1,2912735 MHz   
  65   Sat May 15 09:50:31 2021 TeamRunsLaser cooling of.... H=2
H=7
H=10
  
  73   Sun May 16 02:28:21 2021 TeamGeneral#Beam ON!Laser specs:
pulse length -> 482ps
  
  74   Sun May 16 05:09:04 2021 TeamGeneralLaser cooling with 482pswe see laser cooling with 482ps pulse length   
  75   Sun May 16 05:09:27 2021 TeamGeneralSwitch to 285pspulse length -> 285ps

minimum 62mW inside ESR (depending on laser
  
  76   Sun May 16 05:24:00 2021 TeamGeneralLaser cooling with 285pswe also see laser cooling with 285ps pulse
length
  
  77   Sun May 16 06:13:46 2021 TeamGeneralSwitch to 166ps     
  78   Sun May 16 07:03:07 2021 TeamGeneralLaser cooling with 166psWe saw some indications of laser cooling @
166ps pulse length
  
  81   Sun May 16 21:23:02 2021 TeamGeneralESR OPEN -> preparation for Polarisation Tests    
  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):
  
  83   Mon May 17 08:05:42 2021 TeamGeneralEnd of beamtime~ 8 a.m.   
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