camilla.compton@LIGO.ORG - posted 13:31, Tuesday 18 April 2023 (68791)
Replaced 4 CO2X RF cables. Turned off both CO2X and CO2Y FLIR cameras.
Jason, Camilla. WP11089.
We turned off CO2X laser and swapped the 4 RF cables to our new spare set. This is on recommendation from the laser manufacturer after we found loose cable connections causing power jumps in alog67787 and swapped a single cable. I am ordering a replacement spare set. We plugged them in the same way we found them and secured them to the table with dog clamps. CO2X relocked with 0.5W higher power, at 48.9W.
RF driver to laser connection: UR bnc to LR tnc; LR tnc to LL bnc, UL tnc to UL bnc, LL bnc to UR tnc.
We also turned off both CO2X and CO2Y FLIR cameras using the switch on the breakout box inside the tables (photo attached). This model of camera (A325SC) does not have a fan but Robert was concerned if these could related to 30Hz lines in DARM. Tagging DetChar.
Images attached to this report
