GTS Improvement List - Summer 2016

Preparation Chamber

1. Put a shield for RGA (to limit the light scattering from RGA filament that causes photoemission from chamber components surface that gets coated with photocathode materials during evaporation.)

2.Redesign for anode ring to mount on a paddle with a bellow (to enable flexibility in operation.)

3. Recharge Sb boat.

4. Clean up the view ports that got coated.

5. Redesign for the shield paddle motion technique.

6. Add a RAV to isolate IP from the chamber.

7. Add a K effusion source.

8. Redesign for the top heater to operate with cathode negative bias configuration. Redesign of puck and heater stalk to hold the puck by heater stalk, and eliminate the need of bottom heater to serve as a transfer point. Need to use ceramic circuit breaker to electrically isolate the puck.

9. Replace the bottom eater with a view port.

HV Chamber

1. Replace isolated anode feed through with a a longer one that is rated to 5000 V (but first, Gary must check for cathode magnet clearance)

Beamline

1. Install a YAG screen on the third diagnostic cross (instead of the phosphorus screen).

2. Install slits in first and second diagnostic crosses.