Kyle, Gerardo 

(Late log entry, activity earlier in the week)

Installed O-ring type angle valves on (new/untested) 2 of 2 spool-spool annulus type O-ring joint pump ports.  Hung small turbo on valve and backed with aux. pump cart.  After ~20 hours of pumping, the pressure at the inlet of the aux. pump cart turbo was 5x10-6 torr in each case. 

New spool-to-GV15 flange annulus O-ring joint was pumped down with aux. pump cart then switched to ion pump.  Pressure increased slowly overnight and went off scale -> Valved-in aux. pump cart today and pressure now falling (7 mA at time of this entry).  Pump speed of aux. pump cart ~ = that of the ion pump implies ion pump can handle gas load unaided once pressure is below 5 mA. Once realized, new annulus joints at X-mid will be deemed okay and X-mid can be pumped down.