[Kyle, Gerardo, Chandra]

HAM6 east door passed helium leak check with background at 1e-10 Torr-L/s. HAM1 east/west doors will be leak checked tomorrow. We carefully inspeced HAM1 west door o-rings after Kyle noted they looked contaminated. After a wipe down, they looked "normal" to me. We were extra suspicious because of the white tape that was left on flange from previous door job, which more than likely means the doors was leak checked last time. When vacuum breaks out the tape, it's serious business.

IP2 on top of IMC tube was vented with UHP bottled nitrogen and all but a few nuts/studs were removed from the flange that mates to its gate valve in preparation for removal tomorrow in order to install newly rebuilt ion pump with a chevron baffle.

Kyle cleaned and baked (class B) several foreline flex hoses overnight so we can start pumping down HAM 1 & 6 tomorrow and leak check their new feedthroughs.