travis.sadecki@LIGO.ORG - posted 17:52, Tuesday 24 February 2026 - last comment - 23:51, Wednesday 25 February 2026(89254)
BSC1 annulus ion pump (AIP) replaced
The annulus ion pump body for the BSC1 annulus system was replaced. We then hooked up and started the turbo/aux. cart. Pressure at the cart was dropping nicely as pumping commenced.
There will be a pump cart running on the south side of the Y-arm beamtube, near the TCSY table, until the ion pump transition pressure.
The annulus ion pump controller was turned on first thing this morning, and after a few hours the ion pump was able to maintain the pressure of the annulus system. That allowed us to close the isolation valve. After lunch the aux cart and can turbo were removed from the annulus system.