3'9 GHz 3rd Harmonic Cavities

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3.9 GHz 3rd Harmonic Cavities

• Current Status
• Prototype cavity No. 1 at Jlab for repair of
  hole.
• Prototype cavity No. 2 main coupler end
  assembly complete -- pick up end assembly 75
  complete (awaiting repair of Sciaky four spindle
  positioner) -- dumbbells welded.
• Cavities No. 3-6 end tubes complete -- 36
  dumbbells welded (Jlab) -- all additional parts
  complete -- dumbbells will be trimmed and NW40
  flanges touched up to fit end tubes -- all parts
  and required welding fixtures will be shipped to
  Jlab.
• Cavities No. 7 8 end tubes complete -- half
  cell blanks cut -- all additional parts complete.

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3.9 GHz 3rd Harmonic Cavities

• Schedule
• Prototype cavity No. 1 mid-November 2005
• Prototype cavity No. 2 ?
• Cavities No. 3-6 March 2006
• Cavities No. 7 8 April 2006 ?

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3.9 GHz 3rd Harmonic Cavities

• Projected Costs (November 1 to completion)
• Machine shop 34K
• Welding (Sciaky) 23.5K
• Jlab 30K

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3.9 GHz 3rd Harmonic Cavities

• Required Resources November 1 to completion
• Engineer 1.0 FTE
• Technician 0.5 FTE (priority 1)
• A0 Technicians 1.5 man-days two times per month
  on average
• Machine Shop 0.5 FTE (priority 1)