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MICE. TECHNICAL UPDATE & ISIS/RAL PLANS. Acknowledge. Belgium Italy Japan The Netherlands Russian Federation Switzerland UK USA. RAL & ISIS. RAL. Harwell. ISIS. Location. Plant…. Control room… Electronics…. ISIS Ring. Experimental Hall. Hall: L = 47 m W = 12 m H = 8 m

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slide1

MICE

TECHNICAL UPDATE &ISIS/RAL PLANS

acknowledge
Acknowledge

Belgium

Italy

Japan

The Netherlands

Russian Federation

Switzerland

UK

USA

ral isis
RAL & ISIS

RAL

Harwell

ISIS

location
Location

Plant….

Control room…

Electronics….

experimental hall
Experimental Hall

Hall:

L = 47 m W = 12 m H = 8 m

S = 564 m2 V = 4512 m3

Two overhead cranes (8 tonnes each)

mice hall
Mice Hall

Existing Area & Beam Line

-- is still there - as seen in Summer

-- Beam Line used to end of year

technical update issues
Technical Update & Issues
  • Beam Line
  • RF System
  • Absorbers
  • Magnets & Cryogenics
  • Detectors
  • Infrastructure & Layout
  • RAL & ISIS Perspectives
  • Programme
  • Expected Progress
beam line
Pm < 400 MeV/c

Rejection of protons and pions <10%

few muons per ms

Two solutions:

solenoid

cryogenics availability

release by PSI

quadrupoles

Beam Line
performance
Performance

Rate depends on muon momentum:

e.g. at 200 MeV/c

3000 / ms for solenoid

~300 /ms in quadrupole

(assumed a Ti wire target: 1cm long and 4mm Ø)

Purity should be better than 90% against scattered protons

rf system

Solenoid Magnet

Cooling Channel

Envelope

RF Cavity

Cavities

Raft

Absorber

Tuning

Bellows

RF System

1 MW per cavity

8MW total

Low Duty Factor

1-2 ms

1-10 Hz

average power

~1kW/Hz

rf drive
RF Drive

7651

RS2058

EX SPS

TH116

DRIVE TO 4 CAVITIES VIA PHASE SHIFTERS AND 70db COUPLERS POWER SPLITTERS AND CIRCULATORS

TH781

EX RAL

4kW

10mW

40kW

4MW

400kW

12kV

5kV

40 kV

20 kV

LEVEL CONTROL

- a possible scheme

~

SOURCE

OTHER DRIVE CHAIN

R.A. Church RAL

magnets cryogenics
Magnets & Cryogenics

Principle Issues – Fringe Fields

– Cryogenic Requirements

Blue contours:

10 mT

Orange:

0.5 mT

detectors
Detectors

Issues:

SiFi - Large cyro cooling needed for VLPCs

TPG – HV & flamable gas (next to Lig.H cell)

infrastructure
Infrastructure

Plant: Electrical Power

Cooling Power

Cryogenic System

Hydrogen Delivery & Handling

Installation

phased build of the experiment

isis perspective
ISIS Perspective
  • Critical Issues: Beam Line
  • Long Shutdown
  • Break into ISIS Synchrotron from MICE Hall
  • Have Shielding available+
  • Have Stands available
  • Competes with other ISIS projects
    • 300 mA upgrade*
    • Second Target Station*
    • RFQ Installation
    • delivery of contracted neutron amp.hours
    • * work in synch. vault +2nd target station – friend or foe?
expected progress
Expected Progress

Proposal submitted expect the review to take place Mid Feb till May (?) - international review panel

MICE is part of the UK’s Science road map - but funds are not yet allocated

Internal Review  green light following international rp

Management & Oversight Structure(s) need to be in place

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