kapton module ass. spacers for pins 3.6 m 0.963 m 1.25 mm
DESCRIPTION
Pin screw Spacer insert 130 mm D 2mmTRANSCRIPT
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Kapton module ass.
Spacers for pins
3.6 m
0.963 m
1.25 mm
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1.25 mm
Pin screw
Spacer insert
130 mm
D 2mm
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Total weight of one wedge module ~ 5 tons
One assume only the central pins working
963 mm
490 mm
9 x 68 pins
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Load condition changes acording to the orientation of the wedge module in the barrel.
A detailed FEM model to be developed for the deformations and the stress between the W plates
Gravity load,
tension tress
Fixed to HCAL Gravity load,
shear stress
Fixed to HCAL
963 mm
490 mm
9 x 68 pins
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Shell element for the W plates
Beam elements for the pins1.8 m
.45 m
132 mm
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Gravity load
Fixed to HCAL
Max deformation, 0.135mm Max stress on pins, 180 MPa
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Max deformation, 0.027mm Max stress on pins, 110 MPa
Gravity load
Fixed to HCAL
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Considerations
• Deformations are small
• Max stress on pins, good safety factor with 2mm OD pins
• Tungsten plates experience low or negligible stress : it is a good in case of a joined plates assembly
• The pins concept show good performances
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Long wedge supported from the ends
Deformations, 23mm Max stress on pins, 2870 MPa
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Considerations
• Deformations and stresses are large
• The pins concept does not perform for this specific support configuration
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Sliding of QD0 on the door
Support of the beamcal and mask
Support of the beampipe
2 m
Spacer tube
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Ion Pumps
Needs of specification of the experimental vacuum chamber : valves, bellows, bakeout temp., pumping, supports