Aoplogies; I went in to do my weekly reset of the FE Watchdog last night and on my way out i noticed that the Xtal chiller level was at minimum so I added 250ml to bring it upo to the max line. I neglected to aLog this.
jason.oberling@LIGO.ORG - 12:10, Thursday 24 March 2016 (26235)
120mL seems like a good bit of water for only an ~12 hour period. It's conceivable that Ed would have had to add 250mL Wednesday night since we did fix a water leak on Tuesday and had to drain the laser head circuit in order to do so. We had to add more water to the chiller to get it operational, but only added enough to do this (was not topped off). Corey having to add 120mL the next morning is somewhat concerning.
I have attached 3 and 7 day trends of the relative humidity of the HPO box and the PSL enclosure laser room. Our activity on Tuesday is obvious, and once we put the lid back on the HPO box the RH slowly increased (over the course of ~17 hours) in the box until it reached its previous level. I see nothing that to me obviously indicates that we have a bad water leak, although the slow RH increase in the HPO box could indicate we still have a slow water leak. Will continue to monitor.
Aoplogies; I went in to do my weekly reset of the FE Watchdog last night and on my way out i noticed that the Xtal chiller level was at minimum so I added 250ml to bring it upo to the max line. I neglected to aLog this.
120mL seems like a good bit of water for only an ~12 hour period. It's conceivable that Ed would have had to add 250mL Wednesday night since we did fix a water leak on Tuesday and had to drain the laser head circuit in order to do so. We had to add more water to the chiller to get it operational, but only added enough to do this (was not topped off). Corey having to add 120mL the next morning is somewhat concerning.
I have attached 3 and 7 day trends of the relative humidity of the HPO box and the PSL enclosure laser room. Our activity on Tuesday is obvious, and once we put the lid back on the HPO box the RH slowly increased (over the course of ~17 hours) in the box until it reached its previous level. I see nothing that to me obviously indicates that we have a bad water leak, although the slow RH increase in the HPO box could indicate we still have a slow water leak. Will continue to monitor.