gerardo.moreno@LIGO.ORG - posted 17:04, Wednesday 10 January 2018 - last comment - 16:58, Thursday 11 January 2018(40090)
HAM5/6 Annuli Pump Down
(Bubba, Gerardo)
Removed and replaced the rubber stopper size 1 from HAM6 north door annulus, replace it with a size 0. Pumped down on system with an aux-cart and pressure as of 19:00 utc was at 8.0x10-6 torr, aux cart will remain on until tomorrow.
Today at 19:15 utc, after isolating annulus system for HAM5, the aux cart was turned off, but the rubber stoppers remain on HAM6 north and south flanges. Pressure before turning off the cart was at 8.0x10-6 torr.