GTS Improvement List - Summer 2016

Lasers

1. Remove laser from PSS (if not, replace sticky PSS laser shutter).

2. Put laser attenuator in EPICS.

3. Put ND control in EPICS.

4. Put Verdi control in EPICS.

5. Put pickoff Newport power-meter in EPICS.

6. Install QE scanner and and put controls and readout in EPICS.

7. EPICS controlled spot move.

8. Install SCAM module and its controls.

9. Install a CW laser (476.3 MHz) and a pulse laser capable of generating 420 nC bunches.

10. Put a box around QE laser table

11. Put a box around main laser table next to beamline

Photocathode Preparation Chamber

1. Put a shield for RGA (to limit 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 view ports that got coated.

5. Redesign for shield paddle motion technique.

6. Add a RAV to isolate IP from chamber.

7. Add a K effusion source.

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

9. Replace bottom heater with a view port.

10. Install one steel puck and one hybrid moly/steel puck.

11. Install puck with Fe foil for Kerr measurement

Gun 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)

2. Replace leaky gate valve between gun and cathode prep chambers.

3. Replace HV pure alumina R30 ceramic insulator with doped (black) R30 ceramic insulator.

4. Replace John's design shed with YAn's design shed. The Shed is already barrel polished, needs cleaning.

5. Ensure cathode is aligned, will need S&A assistance.

6. Replace NEG sheet with NEG module.

7. Replace all steel parts inside chamber with stainless steel ones.

8. Search inside chamber for ferromagnetic materials or dust.

9. Clip washers on the front flange ports.

10. Replace ion pump connector with right angle, otherwise the regular connector will not fit with the magnet installed.

11. Flip around downstream high voltage chamber support.

12. Make an extra puck to mount a polished SS steel dummy cathode for using during HV conditioning.

Magnetized Cathode Solenoid

1. Complete Cathode Solenoid Magnet Operational Safety Procedure.

Beamline

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

2. Replace camera on ITVGT02.

3. Install slits in first and second diagnostic crosses.

4. Install a Faraday Cup for emittance measurements. Need a new picoammeter.

5. Install 4 more RadiaBeam steerers. Need Trim cards and cables.

6. Install beamline clamps (mounts) to hold steerers.

7. Install a third beamline solenoid. Need Trim card and cables.

8. Replace glass window on ion pump VIPGT01A with metal blank.

9. Check dump ceramic break shielding.

10. Improve dump LCW cooling (put in MPS?)

11. Degas dump further.

Software and Controls

1. Update GTS main menu (add JELI, Archive ...).

Enclosure and Control Room

1. Get two new computer monitors for fellt2.

2. Get a second phone line.