Leonardo Ristori

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Room Temperatureß0.0744Prototype
CavityFinal design updatesDrawing package
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• Welding
• Vacuum flanges should not go through brazing to
  avoid warping that will put at risk vacuum
• They are welded and only after all furnace
  brazing cycles are completed on the cavity
• Stainless steel surface is required for welding
• All ports (except RF coupler port) are designed
  in stainless steel
• Brazing
• Brazing features such as chamfers and grooves to
  contain alloy wire have been designed
• Centering pins are used to position spokes inside
  cylinder and end walls on cylinder edges
• To eliminate a difficult brazing process, each
  spoke is machined as one single piece with its
  bases
• Tolerances
• All parts have a general tolerance of 0.1mm
  (4mil)
• Drift tubes and spokes have some critical
  dimensions with tolerances of 2mil ( 0.05mm)
• Surfaces
• All parts 125µin 3.2µm
• Spokes and drift tubes 63µin 1.6µm

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Higher T Brazing
Cu-SST transition
Welding
Higher T Brazing
Chamfers for brazing alloy wire
Centering pins
Lower T Brazing
Grooves for brazing alloy wire
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Drawing package outline
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Drawings summary
Main assembly Sub assemblies Details
ME-440373 B0744_ROOM_TEMP_CH_CAVITY_ASSY MB-440405 RF_PORT_TUBE_ASSY 2
ME-440374 B0744_CYLINDER_BRAZING_ASSY 7
MD-440375 B0744_END_WALL_ASSY 4
ME-440410 B0744_CAVITY_WELDING_ASSEMBLY -
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