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MICE Hall Layout

MICE Collaboration Meeting, LBNL, February 12, 2005

Paul Drummfor

Yury & the RAL team

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• Hall layout

• Beam line shielding layout

• PSI solenoid infrastructure layout

• Plans

Access to MICE & ISIS running

Scope

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Layout (plan view)

Drawing by Tony Jones

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Layout (elevation view)

Drawing by Tony Jones

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Layout (cross-section view)

Drawing by Tony Jones

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MICE module max height

Concrete aperture

Important: The max height from the bottom of the frame to the topof a module should not exceed 3200 mm

Concertina door

Hinged door

Max opening 3200 mm

Max opening 3360 mm

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MICE and beam line shielding

Consultations with ISIS Radiation Safety Officer:

Implemented:

• Beam line radiation shielding:- Roofed block house; no- Labyrinth –type entrance; yes- 1.5 m of steel + 0.75 m of concrete in the direction of the beam; yes

- Temporarily shielding block (1.5 m of steel + 0.75 m of concrete) yes + 1 m of concrete (very recent demand)); not yet

- Beam stopper. Yes(!)

• MICE radiation shielding:- Shielded doors yes- Room for possible shielding for ISIS ion source hall; yes- Room for possible shielding for ISIS control room yes

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Beam line shielding layout

Shielding:

Steel – 1153 tonnes

Concrete – 146 tonnesExisting shielding New shielding: Steel

Movable steel

Concrete

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Solenoid in test positionTemporary shielding block

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MICE and beam line shielding: Problems and solutions

Problem: • Very heavily shielded beam line high cost can MICE afford it ?

But do we really need that heavy shielding ?

Solution:• Calculate doses in the MICE hall for the worst scenario case• Optimize the shielding • Discuss the issue again with ISIS Safety Officer

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PSI solenoid infrastructure

• Magnet preparation for shipment : - New nose piece and temporary lead shielding (design completed). - Need to agree few technical issues for transport with PSI.

• Cryogenics- layout (suggested)

- specs (ready)

• Site for compressor (suggested)

• Support structure (conceptual design completed)

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PSI solenoid nose piece

Nose piece to be replaced

New temporary leadcover to be added

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PSI solenoid nose shielding coverDrawing by Matthew Hills

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PSI solenoid cryogenics layoutHe Transfer lines He Refrigerator Compressor

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PSI solenoid support structure and shielding

Concrete ISIS wall

Steelshielding

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Hall Layout: Plans

• Finalize shielding layout

(after the agreement with ISIS Radiation Safety Officer is reached)

• Add RF system infrastructure

• Modify layout for hydrogen system

• Add new support system (talk by Elwyn)