AdV-DAQ (Calibration)vanhaevermaet - 19:36 Monday 04 August 2025 (67432)
Print this reportScattered light injectionsDuring the calibration slot today we injected scattered light using the SNEB and SWEB benches: SCATL z 1438358687 300 NE MIR # SNEB freq=0.2 amp=140 SCATL z 1438359017 300 WE MIR # SWEB freq=0.2 amp=140 SCATL z 1438359356 300 NE MIR # SNEB freq=0.3 amp=140 SCATL z 1438359686 300 WE MIR # SWEB freq=0.3 amp=140
To do this the CALI metatron was adjusted to do the injections during ITF locked (instead of DOWN) and restarted. The CALI_USER.ini file was updated to include the injections at amplitude of 140 (corresponding to 30-40um) and for two frequencies: 0.2 and 0.3. Each 5min duration. Then by requesting CALIBRATED_DF_SCATTEREDLIGHT all injections are started and done automatically.
Everything looked as expected. One interesting point: at 0.3Hz the SNEB motion looks more smooth/stable than at 0.2Hz (where there are still some fluctuations).