 Fri May 14 09:35:20 2021, Nightshift, Runs, Coasting beam, scanning laser, ecooler on 
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Fri May 14 09:38:04 2021, Nightshift, Runs, Coasting beam, scanning laser, ecooler on
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Fri May 14 09:38:43 2021, Nightshift, Runs, Coasting beam, ecooler on, scanning laser
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Fri May 14 09:40:04 2021, Nightshift, Runs, Ecooling vs laser wavelength shift, coasting beam, laser stronger than Ecooling
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Last three pictures where taken after
first laser ion beam overlap adjustments
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Sat May 15 09:50:31 2021, Team, Runs, Laser cooling of....
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H=2
H=7
H=10
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Sat May 15 09:57:24 2021, Dayshift, Runs, Currently on schedule
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Enhance fluorescence rate and perform
laser bunch timing
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Mon May 10 07:58:13 2021, Danyal, General, Telephone numbers and Zoom link
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Telephone numbers:
ESR laser lab: +49 (0)6159 71 - 2882
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Tue May 11 15:49:30 2021, Danyal, General, setting up ESR
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| The operators are still busy extracting the beam from the SIS18 towards the ESR and injecting it into the ESR. |
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Tue May 11 18:29:35 2021, Danyal, General, first ions in the ESR
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Tue May 11 20:14:43 2021, Danyal, General, bad ESR vacuum
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I just heard that the ESR vacuum is quite bad.
There was a small vacuum problem a while ago, it was sealed, but apparently the pressure is not as low as usual.
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Wed May 12 02:34:29 2021, Danyal, General, instabilities in ion frequency
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The ion beam moves around, pretty arbitrary. See picture.
ESR crew believes that it is not due to fluctuations in the HV of the E-Cooler. |
 Wed May 12 08:10:17 2021, Lars, General, instabilities in ion frequency
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looks like the E-Cooler is responsible for this. If one turns off the electron current, the beam stays stable.
M.Steck is informed.
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Wed May 12 09:59:08 2021, Benedikt, General, Rigol DSG821 signal generator settings
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Wed May 12 18:59:15 2021, Ken Ueberholz, General, Power is back
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| Power is back and most things are running again |
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Wed May 12 19:48:24 2021, Sebastian, General, DSG821 Network
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To implement the bunch Signal Generator (DSG821 inside ESR) you have to:
1. unplug the Ethernet cable
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Wed May 12 22:28:55 2021, Ken Ueberholz, General, Bunching succesfull
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| Bunching with 2 and 10 bunches succesfull |
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Wed May 12 22:35:33 2021, Danyal, General, frev and fb
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Schottky frequency (189th harmonic) = 244.033662 MHz
revolution frequency frev = 1.2911834 MHz
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Wed May 12 22:48:25 2021, Sebastian, General, DSG Control SCPI Commands
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Open Ultra Sigma
Press LAN
Press Search, after a while the whole rigol devices are shown. Press ok
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Wed May 12 22:57:41 2021, Sebastian, General, Laser Reprate
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laser reprate is seven times the revoolution frequency: 9.038283 MHz
pulse length: 735ps |
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Wed May 12 23:45:23 2021, Ken Ueberholz, General, Laser does not reach the exit window
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| High rates on the detector at 50mm positions, laser does not seem to reach the exit window. |