Reports until 18:06, Monday 23 June 2025
LHO VE (VE)
gerardo.moreno@LIGO.ORG - posted 18:06, Monday 23 June 2025 (85264)
HAM1 Pumpdown Update

(Jordan V., Travis S., Gerardo M.)

Up to this morning the volume of HAM1 was being pumped by a turbo pump and an ion pump, we have removed the turbo pump, we closed its isolation valve, but the system remains on (SS500 cart with scroll pump, and turbo pump are still ON).  The turbo pump was isolated to let the ion pump take over the pumping of HAM1, it took a few hours but the ion pump seems to be doing good managing the internal pressure of HAM1, see attached trend, we did have a small anomaly that can be noted on the same trend data, a little spike, we are looking into it.  If the pressure continues to improve, we'll be able to turn off all other auxiliary systems and decouple everything from the turbo pump tomorrow.

 

Images attached to this report