Thursday, September 21, 2017, 11:32

Copper plate attached to TBHT to allow current to be applied.

Started pumping down this a.m.

Roughing pump sounds normal.

Currently Ion Gauge times out before turning on, will attempt again later when lower vacuum achieved...

 Monday, September 25, 2017, 13:30

Ion Gauge hadn't been fully hooked up via eipcs yet.

Ramped down last week/ vented/ hooked up ion gauge in epics/ restarted IOC - now updated and good to go.

Started pumping down again this a.m.

Roughing pump sounds normal.

Ion gauge working well!

IGP1 = 2.7e-5 Torr

 Wednesday, September 27, 2017, 09:20

Cooled down, vented in air and opened up yesterday.

TBHT ran well -  readout on power supply and readout on striptool were very close.

Roughing pump ran smoothly - nothing other than usual problems.

Sometimes when roughing pump is 1st turned on it chokes up and sounds TERRIBLE. At this point if you turn it off and leave it for a few seconds then try turning it on again it usually works fine.

Ion gauge ran well - direct readout vs striptool readout are slightly off because the direct readout is in mBar and the striptool in Torr.

One minor thing noticed with the new ion gauge - when water is turned on the vacuum increases very minorly by ~5e-8 Torr.

This wouldn't show up with the old Ion Gauge - maybe the new one is slightly more sensitive?

Otherwise everything ran great