CEBAF upgrade meeting - December 13, 2017

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Install the new 200kV gun during 2018 SAD, sometime after the Bubble Chamber experiment. Imagine ~ May 2018

Gun and BPM NEG tube status:

  • After two days of krypton processing, the 200kV gun at UITF seems to be free of field emission at 200kV bias voltage. Need to start making beam to evaluate lifetime, photogun performance
  • Phil waiting for power supply repair, to finish NEG coating of two modified M20 BPMs and the solenoid nipple
  • Poelker to order clean krypton tank and regulator for dedicated gas processing system at CEBAF
  • Need to visit the tunnel to check the gun pump configuration, prepare for unusual plumbing to reach bake pump
  • Need to order the right HV cable for CEBAF, R350 to R28. Should not be as long as one in UITF

Baked beamline with two-Wien spin flipper

  • media: baked beamline layout 12 December 2017.pdf
  • UED
  • Valves
    • Are those still in Manual mode? What is needed to have EPICS control?
  • Magnets
    • Magnet summary screen in EPICS DONE!
    • J. Grames working on setting up magnet hot checkout (K. Banks to terminate magnets near the gun, Wein, etc) polarity checks, B-magnitude measurements, etc
  • Viewers
    • B. Freeman: "So from the viewer screen I put one button that will launch my application (adviewer) with the first viewer. Use the drop down menu in the left hand corner to scroll through camera feeds. This will not be the final configuration of the viewer screen. I plan to add some more options for viewer applications. I will also document all of the URLs for each camera feed. But this should be enough to see the viewers. I have verified that they all work and connected to the "correct" viewer."
  • Video to control room, DONE!
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