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  Laser Cooling Experiment 2021, Page 1 of 5  Not logged in ELOG logo
ID Date Author Categorydown Subject Text Attachments
  Draft   Fri May 14 09:35:20 2021 NightshiftRunsCoasting beam, scanning laser, ecooler on   IMG-20210514-WA0018.jpg 
  53   Fri May 14 09:38:04 2021 NightshiftRunsCoasting beam, scanning laser, ecooler on   IMG-20210514-WA0018.jpg 
  54   Fri May 14 09:38:43 2021 NightshiftRunsCoasting beam, ecooler on, scanning laser   IMG-20210514-WA0019.jpg 
  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 
  65   Sat May 15 09:50:31 2021 TeamRunsLaser cooling of.... H=2
H=7
H=10
  
  66   Sat May 15 09:57:24 2021 DayshiftRunsCurrently on schedule Enhance fluorescence rate and perform 
laser bunch timing 
  
  1   Mon May 10 07:58:13 2021 DanyalGeneralTelephone numbers and Zoom linkTelephone numbers:

ESR laser lab: +49 (0)6159 71 - 2882
  
  2   Tue May 11 15:49:30 2021 DanyalGeneralsetting up ESRThe operators are still busy extracting the
beam from the SIS18 towards the ESR and injecting
it into the ESR. 
  
  5   Tue May 11 18:29:35 2021 DanyalGeneralfirst ions in the ESR   first_ions_are_injected.jpg 
  6   Tue May 11 20:14:43 2021 DanyalGeneralbad ESR vacuumI just heard that the ESR vacuum is quite
bad. 
There was a small vacuum problem a while
  
  8   Wed May 12 02:34:29 2021 DanyalGeneralinstabilities in ion frequencyThe ion beam moves around, pretty arbitrary.
See picture. 
ESR crew believes that it is not due to fluctuations
 fluctuations.jpg 
  10   Wed May 12 08:10:17 2021 LarsGeneralinstabilities in ion frequencylooks like the E-Cooler is responsible for
this. If one turns off the electron current,
the beam stays stable. 
  
  17   Wed May 12 09:59:08 2021 BenediktGeneralRigol DSG821 signal generator settings   CF7701F6-86BE-406C-8FAD-F3161463181C.jpeg 
  22   Wed May 12 18:59:15 2021 Ken UeberholzGeneralPower is backPower is back and most things are running
again
  
  23   Wed May 12 19:48:24 2021 SebastianGeneralDSG821 NetworkTo implement the bunch Signal Generator (DSG821
inside ESR) you have to:
 IMG_20210512_195329_resized_20210512_075346417.jpg 
  24   Wed May 12 22:28:55 2021 Ken UeberholzGeneralBunching succesfullBunching with 2 and 10 bunches succesfull   
  25   Wed May 12 22:35:33 2021 DanyalGeneralfrev and fbSchottky frequency (189th harmonic) = 244.033662
MHz
  
  26   Wed May 12 22:48:25 2021 SebastianGeneralDSG Control SCPI CommandsOpen Ultra Sigma
Press LAN
Press Search, after a while the whole rigol
  
  27   Wed May 12 22:57:41 2021 SebastianGeneralLaser Repratelaser reprate is seven times the revoolution
frequency: 9.038283 MHz
pulse length: 735ps
  
  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.
  
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