MICE Partial Return Yoke PRY Fabrication
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MICE Partial Return Yoke PRY Fabrication 06 November 2013 Stephen R. Plate Brookhaven National Laboratory 9/23/2013 1
description
MICE Partial Return Yoke PRY Fabrication. 06 November 2013 Stephen R. Plate Brookhaven National Laboratory. Outline. 6-Section Design Change – update Cost & Procurement Status Work to complete. Center sections (independent removal). Lowered Restraint bars (clear mezz , south). - PowerPoint PPT Presentation
Transcript of MICE Partial Return Yoke PRY Fabrication
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MICE Partial Return YokePRY Fabrication
06 November 2013Stephen R. Plate
Brookhaven National Laboratory
9/23/2013
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Outline
• 6-Section Design Change – update• Cost & Procurement Status• Work to complete
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Previous design
New designLeft/right symmetry
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Shorter horizontal reach
LoweredRestraint bars(clear mezz, south)
Center sections(independent removal)
Add Hall floor(no leg splices, shorter leg)
New leg arrangement
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Tie-down bar apertures repositioned
Waveguide slots to be angled upward
Crossbar positions not final
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Bolted leg-channel connections
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Rail is now intermittent
Jacking screw for disassembly (3)
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LC
3306 kg
3490 kg
6-Section Design
1807 kg
1380 kg
4°taper
Lighter color indicates machined areas
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Fabrication Cost & Procurement Status
• JFE steel order (JFE, Kurashiki, Japan)– 100 mm thick main plates, 50 mm backing plates– Steel of magnetic uniformity– Material total ~$70,000 for 12 plates (8 end, 4 ctr, 8 backing plates)– Delivery: ~16 weeks
• Machining– Separate vendor, to be identified– ~$2850, each plate
• Framework drawings– Some dwgs. out for quotation– 3 suppliers queried– Awaiting responses
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Work to complete • Modifications to shielding plates
– Reposition crossbars– Virostek plate extension mounts and flux leakage mitigation parts– Finalize position and size of slots for tracker waveguides (angled, not
normal to surface)– Add drilled/tapped holes for bolted connections, hoist rings, crossbar
mounts– Assembly and detail drawings for all of the above items
• Deflection/Stress Analysis– Recheck new model in ANSYS Workbench– No surprises expected, but need verification
• Structural Framework– Assembly and detail drawings for restraints bars & lower support arms
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BACK-UP INFORMATION
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Assembly Procedure(in progress)
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Install Section 1
Machined surfaceson channelmate to pink bar
Section 2 is similarly installed
Hoist ring spacer provides correct tilt
Clearance to back of channel
Hoist ring
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NOTE: Slides 11-14 show old design, but technique remains current
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Install Section 3 (and 4)
Lower hoist rings removed;
guide blocks installed
(also shown on isometric, Slide #4)
Plate guided into engagement
during lowering
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Install Restraint Bars
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All beam-to-channel connections will also be bolted
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(Assembly Technique – continued)
• … Install Virostek plate extensions• Install spectrometer solenoids and AFC• Build and install shielding on north side, same technique as
south side• Install north/south load-sharing cross bars
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