200 kV gun

High voltage test => evaluate onset of field emission in small HV chamber with tee electrode

Install high voltage insulator or PIG

Plan media:200817_Tee_Evaluation.pptx

Gun work => replace cathode in small HV chamber with small shed and tee electrode

Install and align new small shed (cut from large shed) SS tee w/ conductive insulator

Replace 10" anode flange (no change to anode spider - tube - anode) with tapped flange for BPM

Remove inline getters

Build new 2I beam line (BPM-tube-BPM-tube/FX-bellows-BPM-valve)

Bake

High voltage test => evaluate on set of field emission, high voltage gas condition to 200 kV no FE

Gun work place holder => replace with large HV chamber, large tee w/ shed and off set biased anode