Kiwamu, Alastair (via email/phone), Nutsinee
Quick Conclusion: No more nasty particulates going into the chiller system. Both AOM and AOM driver were drained but the hoses were left undrained.
Preparation
Since we're done using AOM to align the CO2 beam to the carrier light, it's time to remove them out of the water system so the nasty particulates don't travel into the water system any further. First we went out on the mezzanine to turn off the RF oscillator, then we headed to the RF distribution amplifier. We couldn't find any on/off switch so Richard suggested we just disconnect the cables and replaced it with 50 Ohms terminators. We disconnects TCSX and Y RF driver cables (#3 and #8 -- see first attachment). Then we headed back to the mezzanine and switched off the AOM power supply (which hasn't been tagged out. DO NOT TURN THIS UNIT ON.). The CO2 laser was turned off from the control room at this point. PSL light pipes were shuttered. TCS chillers were left running.
Disconnecting AOMs from water supply
Starting with TCSY table, First I removed the quick connects. Then I removed the hoses from the AOM and the AOM driver. Seeing that the water isn't going to drain itself out, I blew out water using compressed air duster. I didn't have time to drain water out of the hoses to I wrapped them with clean room cloth and left them there (for now, at least until next Tuesday). I also left some dry cloths below the AOM and the driver just in case any more water drip out. I did the same at the quick connects. I repeated the same thing with TCSX table. See 2nd and 3rd attachment for images. There were no more water dripping or seeping out when I closed the tables. I turned the oscillator back on, opened the PSL light pipes, and restored both CO2 lasers at ~ 14:13 PT.
I attached a picture (final attachment) of some nasty particulates I blew off one of the units for your amusement.
