This post is dedicated to Steve Jobs. Hero, and inspiration to all.
I bought a second CRT; broke the vacuum by drilling an unused pin; scored it and smashed it!
Now we have an electron gun:
I installed it in the chamber and wired it up:
Here you can see down the beam line to the hot cathode.
I taped a piece of broken phosphor screen on the viewport so I can see the electron beam:
But something is not working, no beam.
Time to troubleshoot.