Magnetic Mitigation - Contents

Magnetic Mitigation General West Wall Compressors Rack Room 2 (north wall alternative) Magnetic Shielding Yoke

Jason Tarrant – Integration Engineering

Magnetic Mitigation - General Parallel approach

Baseline [UK led] Remove / Shield Equipment in

Areas of High Risk (compressor move, external rack room & local shielding)

Parallel option [US led] Single ‘yoke’ solution Requires some UK resource

K Marinov

H Witte

P Smith

Magnetic Mitigation - General Validation of Analysis

AFC Filed Mapping in R9 Opera Modelling Compare Measurements & Modelling

Including penetration of field into cabinets

I Taylor, C Pidcott, M George

West Wall Compressor Move Why

Compressor location under south mezzanine in high magnetic field

Length limit of ~30m on He hoses (compressor to cold heads) so unable to place outside MICE Hall

West wall relatively uncluttered + opportunity to build mezzanine platform

V Bayliss

Requirements ~30m hose lengths Platform to support compressors, personnel etc. Safe personnel access Compressor handling & installation Equipment delivery & assembly space for MICE

experimental devices

Existing West Wall

Existing high power cable to

be moved

4

PPS system trunking

West wall mezzanine will be at this level

between the existing services

Services to be moved or bridged by the west mezzanine

Platform, Compressor & Services

West Wall Mezzanine

Perforated flooring for thermal management

< 30m Hoses

19 Compressors for Step IV + 12 for Steps V & VI in stands

Air-conMove

Cable trays for compressor hoses & power cables from ground floor compressors

Cable trays for compressor hoses & power cables from

first floor compressors

Hose and cable tidy along south

mezzanine corridor

ControlRack

West Wall Compressor Move What (Completion Date)

Distribution board move (March 2013) Design, structural engineering and approval (May 2013) South west air-con & supply services (June 2013) Auxiliary equipment crane move (June 2013) Mezzanine platform build on west wall of MICE Hall (Sep 2013) Water services, including water plant relocation (Sep 2013) Services installation & management (Jan 2014) Some related infrastructure changes(Jan 2014)

• Lighting• PPS• Power cables

Compressor stands with integrated power (Feb 2014) Compressor & services installation (April 2014)

West Wall Compressor Move When

Ready for Running April 2014

RR2 Why

Same magnetic field problem as compressors but longer services length, therefore move out of Hall to new Rack Room 2 (RR2)

Allows operational changes without breaking PPS or disrupting running

Requirements Capacity in RR2 to eventually house all racks for Step VI Minimal change to building (cost related + will be returned to

ISIS) Fire safe, including services runs Safe access to racks Manage climate: Thermally for RR2

RR2 & MLCR Reconfiguration

Existing Rack Room

New Rack Room RR2

MLCR

Cables Routed Under Stairwell & False Floor

Luke Fry / February 2013

RR2 What (Completion Date)

Asbestos removal work (May 2013) Design, structural engineering & approval (July 2013) Cable ways through walls and cable management (Aug 2013) Building (doors, apertures, walls) (Nov 2013) Air management & temperature control (Jan 2014) Install services, power distribution & electrical (Jan 2014) False Flooring (rack room and main walkway) & cable trays

(March 2014) Rack installation (May 2014)

RR2 When

Ready for Running 09th May 2014

Magnetic Shielding Yoke Why

Apart from compressors & racks above many other components and systems in proximity of Step IV MICE experimental devices that could malfunction in the level of magnetic field that will be produced.

Requirements Magnetic shielding yoke that sufficiently lowers the level

of the magnetic field to enable safe operation of the experimental devices and the infrastructure of the MICE Hall, as well as protecting the ISIS control room.

Compatible with the MICE Hall environment, MICE experimental devices, services, maintenance etc.

Magnetic Shielding Yoke

Integrated with Step IV

Devices

Brookhaven Yoke Design

Integrated into the

MICE Hall

Magnetic Shielding Yoke Design Iteration

Fit with Experimental Devices

Fit with Hall Flooring & Trench

Fit with South Mezz Platform & Tracker Cryo

Fit with Detectors

Fit with Services

Modifications required to

current yoke design and the

MICE Hall

Magnetic Shielding Yoke What (UK)

Change front of south mezzanine to fit around yoke Reconfigure & extend on-device services connections, thus

compatible with reduced access when yoke installed Reconfigure cold head hoses & power, vacuum lines and magnet

cables & their management to fit with yoke Move Tracker Cryo & extend waveguides if necessary (waveguide

= US purchase) Move hydrogen filling station (either yoke or tracker shield) Provide modifications for lower yoke columns into trench and floor

on north side, requires significant modifications to false flooring and trench roof

What (US) Supply Step IV yoke Min 1x installation representative

Magnetic Shielding Yoke When

Parallel path until baseline shielding shown to be inadequate.

Decision point identified 30Sep13: External review of baseline and yoke option Would allow fabrication of yoke parts to start in US

FY 14

--- Extra Slides

Delivery, Assembly & Handling

Small equipment

crane

SS in lifting position with tandem lifting frame

Floor plan showing legs of platform and room for delivery and assembly area of

the MICE experimental devices

Step V & VI stairway change (TBC)