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Entry   Shift summary, posted by Giuseppe Mercurio, Diego, Martin, Amina on 05 May 2023, 06:33 
    Reply   Re: Shift summary, posted by Giuseppe Mercurio on 05 May 2023, 07:23 optical_sync_2023-05-05_07-21-35.png
Message ID: 180     Entry time: 05 May 2023, 07:23     In reply to: 179
Author: Giuseppe Mercurio 
Group: SCS 
Subject: Re: Shift summary 

Actually, it looks like the sync was lost shortly before 23h last night as the jitter went to 0fs and recovered at 1am when a new sync search probably started.

Giuseppe Mercurio, Diego, Martin, Amina wrote:

achievements:

  • inserted the magnet and measured delay scan at the maximum magnetic field with opposite directions
  • data analysis showed that runs measured during the afternoon/evening led to sample degradation (the sample shows a dark spot, change in the scattering signal is also cearly visible)
  • corrected spatial overlap
  • moved to gresh spot and did delay scan at lower OL fluence (Tr = 35% instead of 70%)

problems:

  • PP laser phase shifter when optically lock moved from 1018 to 229.8 on its own, and it was realized few hours later. We moved it back to the original value.

 

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