Valved in last IP in vertex this morning (IP2) - all four IPs valved in plus three NEGs. Total pressure now 3.5e-8 Torr. Water partial pressure on RGA reading 1e-7 A (same as pre-vent with GV 1,2 closed).
Before opening GV 1,2, we will shut down turbo.
Four pump carts are still pumping on HAM 1,2,5,6 annulus volumes. Turbos are pumping on HAM 1,6 chambers. We typically turn their IPs on at 5e-7 Torr.
Pre and post RGA scans attached. Pre-scan represents the vertex being pumped by four ion pumps, an e-5 range leak, and an RGA filament that was warmed up for only a half hour. Post-scan represents the vertex being pumped by four ion pumps, three NEG pumps, no {known} leaks (
), and an RGA filament that has been on for a couple of days.