Sep 08, 2021 - Group Meeting

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2022 Winter SAD ATLIS Tasks

Phase 1 Region

  • (~everyone) Install 200 kV w/o field emission
  • (Lakshmi) Replace DR dipole => PO written week of Aug 30 for new DM at CEBAF, UITF and 2 spare coils
  • (Sarin/Riad) Replace noisy Wien 20A SCE =>
  • (Phil) Repair leaky PCUP LCW fitting
  • (Marcy) Remake A2 joint
  • (Marcy) Replace harp
  • (Jerry) Install & test 200 kV kicker
Phase 2 Region
  • (Matt) Possibly install solenoid/valve downstream of chopper => MMF mapping solenoids in Sep. Do we have 2-3/4" pneumatic beam line valve?
  • (FM) Install bright lighting => Walked area with FM. Waiting for follow-up.

CEBAF 200 kV Gun

  • Carlos - Status of small gun HV limits, CEBAF and UITF
Media:CEBAF-UITF electrodes history updated Sept 2021.pptx
  • Carlos - GTS gun HV design, i.e. reaching >200 kV w/o field emission
https://wiki.jlab.org/ciswiki/index.php/18%22_Photogun_ala_GTS
GTS gun to 280 kV no field emission even with holes in cathode back end
  • Gabriel - Picking the anode to eliminate kick
https://wiki.jlab.org/ciswiki/index.php/18%22_Photogun_ala_GTS