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AdV-ALS (End arm injection)
derossi, gosselin, spinicelli - 17:09 Tuesday 01 July 2025 (67181) Print this report
ALS WEB switch off and switch on

switch off

  •  06:50 UTC open PSTAB and BPC at WEB
  •  06:50 UTC switch-off 2W ampli
  •  06:51 UTC Switch off PPLN crystal (temperature 117.63C)
  •  06:52 UTC SOA current: from 69.5mA lowered to 0 and switch off (current unplugged at 06h53)
  •  06:58 UTC unplug the corrections to the RF amplifier of the AOM (PSTAB cable 8 and VCO cable 6 unplugged)
  •  07:03 UTC VCO alim L1.3 off 
  •  07:10 UTC switch off the alim of the RF amplifier + photodiodes box ALS DCG L1 and 07:11 UTC L2+L3
  •  07:13 UTC power supply alim L1, L2+L3 unplugged

switch on

  • 13:10 UTC power supplies alim L1, L2+L3
  • 13:10 UTC switch on the alim of the RF amplifier + photodiodes box ALS DCG L1, L2, L3 
  • 13:11 UTC VCO alim L1.3
  • 13:11 UTC plug the corrections to the RF amplifier of the AOM (PSTAB in can 8 e VCO in  can 6 )
  • 13:12 UTC power supplies SOA and crystal without switch on 
  • 13:12 UTC PPLN crystal oven and SOA switched on (current increased to 69.5mA)
  • 13:13 UTC 2W amplifier on 
  • 13:24 UTC PSTAB and BPC closed 

Relock of the green at around 15:05 UTC (we slightly changed the BPC WEB  tilt x setpoint from -0.001 to -0.135 to improve the alignment and tuned the thresholds in ALS_WARM.ini).

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