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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 Subject Text Attachments
  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
  
  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 
  43   Fri May 14 01:28:04 2021 SebastianGeneral"new" laser wavelengthMinor changes in electron cooler voltage (~+13V,
now 66903V measured by DMM) leads to that
we had to shift the laser wavelength to:
  
  42   Thu May 13 23:42:37 2021 Ken UeberholzGeneralWhat was doneIn this shift a number of successful Schottky
measurements were done:
With fixed laser wavelength, while varying
 Schottky1.jpegSchottky2.jpegSchottky3.jpegSchottky4.jpeg 
  41   Thu May 13 21:00:48 2021 BenediktGeneralNew reprate of the UV laserThe lasersystem now operates at a reparte
of 9.038946 MHz. This is 7 times f_rev (see
previous post).
  
  40   Thu May 13 20:18:10 2021 BenediktGeneralNew f_revThe ions were changed to a different speed
today at 2 PM. The new revolution frequency
is now 1.291278 MHz.
  
  39   Thu May 13 18:34:54 2021 Ken UeberholzGeneralWhat happened scince shift change at 4pmIon frequency shifts with laser, both manually
and scanned, without bunches: successful
Bunching with 7 and 20 bunches: successful
  
  38   Thu May 13 03:35:25 2021 LarsGeneralStatus: Current schedule ... so far1.) so far: 
h = 2, 4, 6, 7, 8, 10, 12, 14, 16, 18, 20,
30
  
  37   Thu May 13 02:45:29 2021 SebastianAnalysisESR pressure   8x 
  36   Thu May 13 02:42:58 2021 SebastianGeneralLasershutter ESR Entrance?!attached should be the name of the entrance
laser shutter. just in case somebody will
close it ;)
 IMG_20210513_020027_resized_20210513_024049198.jpg 
  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 
  34   Thu May 13 01:21:30 2021 SebastianGeneralCurrent schedule ... so far1.) check h=2,4,6,7,8,10 .... bunching frequencies
with different amplitudes (signalgenerator),
Ecooler ON, Laser OFF --> record schottky
  
  33   Thu May 13 01:13:06 2021 SebastianGeneralBunching frequenciesrelating to Danyals ID 25 post are the current
bunching frequencies:
  
  32   Thu May 13 01:05:45 2021 DanyalDAQmore stability by bunchingBecause the C3+ part of the ion beam is properly
bunched, it is no longer so sensitive to
the drifts caused by the e-cooler. 
  
  31   Thu May 13 01:01:27 2021 DanyalDAQbunched ion beam   bunched_-_signal.jpgbunched_-_Schottky.jpgzoom_bunched_-_Schottky.jpg 
  30   Thu May 13 00:58:53 2021 DanyalDAQunbunched ion beam   not_bunched_-_signal.jpgnot_bunched_-_Schottky.jpg 
  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.
  
  28   Wed May 12 23:36:18 2021 Ken UeberholzDAQVI changecarbon main vi - kopie is now in operation

here, in keysight.vi the input settings for
  
  27   Wed May 12 22:57:41 2021 SebastianGeneralLaser Repratelaser reprate is seven times the revoolution
frequency: 9.038283 MHz
pulse length: 735ps
  
  26   Wed May 12 22:48:25 2021 SebastianGeneralDSG Control SCPI CommandsOpen Ultra Sigma
Press LAN
Press Search, after a while the whole rigol
  
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