Vacuum System Testing

I did some testing and my second thermocouple gauge destined to read out the pressure at the top of the diffusion pump is dead...

I started up the foreline pump, isolating the foreline from the rest of the system with 2 valves. It took 10 mins for the pressure to hit 15 millitorr (microns of mercury) in the foreline, which is normal since the pump and fittings have been sitting around accumulating moisture. After, I turned off the pump, brought the pressure back to up to atm pressure and started the pump and it pumped it from 1atm down to 15 microns in 3 mins :

I could just stick in the dead thermocouple gauge and try out the diff pump anyways, but the beam line port is open to air. Until the beam line gets installed I need a NW40 blank flange to cap off the beam line port to test out the vacuum system.

So the Need to Acquire List :
-DV-6M Thermocouple Gauge
-NW/KF 40 Blanking flange

Until I get a hold of these parts, I will start working on designing and building the High Voltage power supply in order to supply the accelerating potential.