Leonardo Ristori

1
RT Cavity design status

• Change of RF design
• Iteration on Structural analysis
• New cooling system layout
• Addition of features to model
• Vacuum port grid
• Frequency probe feed through
• Tuners
• Status of technical drawings

2
Structural analysis

• RF design iteration originated considerable
  increase of inside cavity radius 148.8 ?185.6 mm
• Different field distribution allows higher max
  deformation of end walls 50µm?200µm
• Analysis results
• end wall thickness unaffected 10mm
• cylinder thickness increased 18mm
• Flange to flange dimensions unaffected

3
New cooling system

• Copper tube
• One loop
• ID8mm OD10mm
• Exchange length 2068mm
• Exchange surface 39435 mm2
• Soldering
• Grooves keep tube in position
• Fastening not needed

4
Vacuum port grid

• 50 of port section may be blocked with no
  significant loss in pumping speed
• Grid with stems perpendicular to beam line has
  been designed for RF purposes

5
Probe port

• Frequency measurements
• CF 1.33
• On symmetry plane
• Far from tuners

6
Tuners and ports

• Quantity 2
• Loc 45deg next to spoke bases
• Stroke 40mm
• Diameter of fingers 20mm
• Accuracy 0.5mm

Manual linear motion
7

• RF contact in beryllium-bronze
• Custom copper gasket holds contact in place
• Shaft of motion device to be machined (shortened
  and fixed to finger)
• Easy assembly/disassembly
• Reliable on vacuum

8
Drawings
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