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RAL Integration IssuesRAL Integration Issues

MICE Collaboration Meeting, Osaka, August 1-3, 2004

Elwyn Baynham, Paul Drumm, Yury Ivanyushenkov, Tony Jones

RAL

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• Layout

• Beam height

• Support structure

• Beam line shielding layout

Scope

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MICE layout

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Concrete floor

Support structure

Dia 650Aperture in ISIS wall

1684.2

160*

1524*

Height of MICE beam

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MICE support structure : Concept

• Requirements/specification: - to move MICE modules out the beam (to the side direction) for various MICE stages

( Qs: Do we need to move ALL modules?; Is the side direction preferable?)

• Accuracy/tolerances: - along the beam +/- 1 mm - across the beam +/- 1 mm

(Q: What position accuracy is required for module-to-module connection ?)

• Adjustment: - adjustment possibility is required.• Locking mechanism: - required.• Loads: - max load is 3 (?) tonnes.• Force transfer function: - gravity force to the floor; - module-to-module axial force to the floor ?

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MICE support structure : Options

• Commercial rail system: - usually high accuracy (+/- 0.1 mm )

( Q: Do we need it?)

- proven design; - delivery times – days ( if off-the-shelf product);

BUT high cost.

• Simple slides arrangement: - accuracy; - cost; - prototype.

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HEPCO SL2 stainless steel based slide system

Item Price/each, £ No./MICE Total No. Total price, with VAT, module k£ k£

Stock SL2 carriage (type AU SS L 76) 460 4 28 12.880 15.134 in assembled and adjusted condition

Spacer slide (rail) SS NL 76 Length of 4.5 m in 3-m and 1.5-m sections 2475 2 14 34.650 40.714

Grand total, k£ 55.848

Delivery time: 3-5 days

Hepco Slide Systems Ltd, Devon England EX16 6TG

MICE support structure: Commercial system

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MICE support structure: Commercial system (2)

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Concrete floor

Simple slides arrangement

MICE support structure: Alternative solution

Rails

Low-friction material blocks

Sliding carriages

Platform

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MICE support structure vs. MICE stages

Problem: some of MICE modules will be located in various positions along the beam for different stages of the experiment.

Possible solution: sliding rails (rails on rails).

Concrete floor

Platform

Steel plate

HEPCO rail system

Beam

Bottom rails 20

40

80

20

160*

MICEmodule

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Beam line and shielding layout

Beam line shielding:

• shields MICE against full beam loss in the ISIS beam pipe (-> 2m of steel is required);

• is removable for access to PSI solenoid;• ideally allows to work on the beam line components in the MICE hall even when the ISIS beam is on -> concept of temporary shielding.

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Beam line and shielding layout

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Steel shielding

Concrete shielding17-tonne magnetPSI solenoid

Crane zone limits

ISIS wall

Beam line shielding

Existing steelshielding

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PSI solenoid support structure and shielding

Concrete ISIS wall

Steelshielding

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Temporary shielding arrangement

These two magnets are in Off-beam position

PSI solenoid is in Test position

Temporary steel shielding

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Next steps

• MICE general layout: - start implementing MICE sub-systems (RF power system, hydrogen system etc.) and magnetic shielding (requires more modelling).

• Support structure: - agree on requirement/specs; - agree on concept; - get cost estimations for various options.

• Beam line and shielding layout: - finish detailed design; - get OK from ISIS Radiation Safety Officer