Reports until 16:18, Wednesday 15 October 2014
H1 TCS (TCS)
greg.grabeel@LIGO.ORG - posted 16:18, Wednesday 15 October 2014 (14470)
TCS CO2 Laser Power Issue
This aLog is a little postdated as this issue happened on October 11th. I was attempting to get calibration values for the rotation stage on the ITMx CO2 table, but I was seeing hardly any power from the laser. I should have been getting ~5w by the periscope and was only seeing ~1w. Power output directly out of the laser was reading ~20w during continuous wave operation but should have been >50w. Luckily the problem was found fairly quickly. The power cable on the outside of the table enclosure was not screwed in and the Connec connector had come partially out. Interestingly this had the effect of only partially supplying the RF driver and so the laser ran at a reduced capacity.
Images attached to this report