CLIC Permanent Magnet Quadrupole Engineering Development of second family member Norbert Collomb, STFC Daresbury Laboratory 1N. Collomb 07/11/2012.

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CLIC Permanent Magnet Quadrupole

Engineering Development of

second family member

Norbert Collomb, STFC Daresbury Laboratory

N. Collomb 07/11/2012

07/11/2012 2N. Collomb

CLIC Permanent Magnet Quadrupole T2• October 2012 imagesMotor –

Gearbox assembly (Bracket not shown for clarity)

Left Hand – Right Hand threaded ballscrew

Linear Ball race

PM in Frame Assy

07/11/2012 3N. Collomb

CLIC Permanent Magnet Quadrupole T2

Magnet shown in fully open position

Magnet shown in fully closed position

07/11/2012 4N. Collomb

CLIC Permanent Magnet Quadrupole T2

A lot of thought has gone into individual components in the assembly context.Manufacturing tolerances and assembly adjustment has been incorporated from the start of the design.Datum faces and reference planes machined in – precise assembly and process specification required (including jigs and fixtures).

Small ‘gap’ for height tolerances

Recess and hole size to restrain yet connect solidly

07/12/2012 5N. Collomb

CLIC Permanent Magnet Quadrupole T2Faceplate provisional ‘one piece’ design

Yoke fastener holes

Rail Bracket fastener holes (loose fit)

Rail support brackets and alignment feature

07/11/2012 6N. Collomb

CLIC Permanent Magnet Quadrupole T2Front view showing a number of principles of how to connect the driving side (ball-screw) with the centre (PM Frame) and driven side (Linear Bushing).

Allow for ‘left-right’ alignment

Allow for ‘into-out of page’ alignment issues

07/11/2012 7N. Collomb

CLIC Permanent Magnet Quadrupole T2

Grub-screws to adjust width and PM – Yoke gap x 4 per LM rail-carriage. Also used for parallelism alignment (during setup).

07/11/2012 8N. Collomb

CLIC Permanent Magnet Quadrupole T2Glass envelope as per specification:391x391x270mm

We are ‘pushing’ the boundaries again with ‘bits sticking out.

Integration check has shown no conflicts (Alexandre model).

Need to check again when more detail design is complete!

07/11/2012 9N. Collomb

CLIC Permanent Magnet Quadrupole T2

Reducing the length (270mm) must be achieved.Proposal to reduce re-circulating linear motion system (HR2042 to HR1530).Forces to check!

This would gain 4mm on either side => reduction to 262mm in length possible.

Caveat; may need to increase other structural components.

07/11/2012 10N. Collomb

CLIC Permanent Magnet Quadrupole T2

Forces are “known” now => Sizing of components.

07/11/2012 11N. Collomb

CLIC Permanent Magnet Quadrupole T2

Detail design for components we know will not change has started.

Drawings and requests for quote have been

submitted to supplier.

1. Ballscrew2. SF/LMF System3. Motor & Gearbox

4. Coupling

HR (recirculation linear ball bearing) can be

next size down (HR1530)

07/11/2012 12N. Collomb

CLIC Permanent Magnet Quadrupole T2Outstanding design decisions:

1. Do we want in situ width adjustment (would need to ‘split’ one piece face plate => reduction in stiffness)? No

2. Incorporate Linear Encoder, preferably on SF/LMF side. Yes3. Inner and outer limit switches.4. Encoder/brake on motor (need to do drive train calcs).5. Permanent Magnet Frame to Ballscrew and SF/LMF interface.

6. Agree on division of shroud into presented components.

7. Keep magnet as single unit and ‘lose’ ability to split.8. Envelope is very tight (Ballscrew end and SF end just

protruding), Faceplate at max Magnet length (provisional)

‘Top piece’ = ‘Bottom piece’

‘Centre piece’ same on both sides

Not as much progress as desired.Need to carry out FEA with known forces.

07/11/2012 13

CLIC Permanent Magnet Quadrupole T2

• Quick check on raw material requirement shows:

• Top and bottom of shroud 61x162.2x190mm (8.3kg) – 4 off required

• Shroud side 39x190x300mm (16.2kg) – 2 off required

• Yoke 57x110x190mm (5.5kg) – 4 off required

• For wire erosion machining we need some more material (+12mm on all sides).

• Can obtain any shape from 90mm plate (AISI 1006 material).

N. Collomb

07/11/2012 14

CLIC Permanent Magnet Quadrupole T2

N. Collomb

2mm flats for vertical and horizontal alignment

Assembly considerations – lessons learned from high strength version

MUST measure components BEFORE assembly commences and manufacture gauges accordingly.

Permits use of assembly gauges

to ensure inscribed radius is correct.Also eliminates 5

degrees of freedom

(parallelism, perpendicularity).

Similar principle to be used on shroud

07/11/2012 15N. Collomb

CLIC Permanent Magnet Quadrupole T2Summary

Progress slower than expected – will speed up next week

Still a few decisions to make with regard to design principle – interface

Permanent Magnet remains as is – could start tender process

Progress with suppliers nearing end – in position to order components soon

Magnetic Steel Material source to be identified – could order ‘larger blocks’

Auxiliary items to be incorporated in design – limit switches, linear encoder, …

Need to carry out design validation - may lead to design iteration

Detail design to be continued on items that will remain as is