muon ionization cooling experiment (mice)
DESCRIPTION
Muon Ionization Cooling Experiment (MICE). Koji Yoshimura Institute of Particle and Nuclear Science High Energy Accelerator Research Organization (KEK). Outline. What’s is MICE? Aim of MICE R&D activities Current Status & Schedule. MICE Collaboration. EU/US/Japan Collaboration - PowerPoint PPT PresentationTRANSCRIPT
Muon Ionization Cooling Experiment (MICE)
Koji Yoshimura
Institute of Particle and Nuclear ScienceHigh Energy Accelerator Research Organization
(KEK)
NufactJ03May 16-17, 2003, TMU
Outline
What’s is MICE? Aim of MICE R&D activities Current Status & Schedule
NufactJ03May 16-17, 2003, TMU
MICE Collaboration
EU/US/Japan Collaboration More than 100 People, More than 30 institutes RAL, UK host Japan
Osaka: Y.Kuno, A.Sato, M.Aoki KEK: S.Ishimoto, S.Suzuki, K.Yoshimura
NufactJ03May 16-17, 2003, TMU
European Scheme of Factory
NufactJ03May 16-17, 2003, TMU
Why cooling?
NufactJ03May 16-17, 2003, TMU
Principle of Ionization cooling
€
dεn
ds≈ −
1
β 2
dE μ
ds
εn
E μ
+1
β 3
β⊥ 0.014( )2
2E μmμX0
In principle ionization cooling shouldwork, but in practice it is subtle and complicated
Approximation of the cooling relation
NufactJ03May 16-17, 2003, TMU
MICE Experimental Apparatus
NufactJ03May 16-17, 2003, TMU
Aims of MICE
Engineering Build, Work, Maintain
Demonstrate Ionization cooling Priciple has never tested!
Compare Simulation with various conditions Absorber materials Muon momentum Etc…Transmission, Equilibrium emittance etc.
NufactJ03May 16-17, 2003, TMU
Cooling Ring
Cost saving RF can be used many times
Longitugional Cooling Wedge shaped absorber
NufactJ03May 16-17, 2003, TMU
R&D Activities
Absorber Convection type KEK/Osaka
RF Magnet Detectors
Scifi Tracker Osaka/KEK Etc.
NufactJ03May 16-17, 2003, TMU
Convection-type L-H2 absorber
MICE/MUCOOL collaboration US/EU/Japan (KEK, Osaka)
KEK bench test of convection absorber I Liquid Ne Heat load Q ~ 70W LHe consumption 29.5 l/hr MICE requirements are met
Qtotal ~ 100 W High heat load and high flow rate make soli
d-Ne Modify flow direction Absorber II
Setup of KEK bench test of convection absorber I
NufactJ03May 16-17, 2003, TMU
Convection Absorber R&D:Absorber II
2 way flow with heater Test at FNAL
Safety issues Window thickness 1m
Pmax > 5bar Volume ratio
LH2/Vac ~ 62 > 52 Heaters are sheathed
Shippment to FNAL Spring, 2003
Initial helium filling test at FNAL Summer, 2003
Absorber II
Cryostat for the test at FNAL
NufactJ03May 16-17, 2003, TMU
Emittance Measurement(P. Janot)
NufactJ03May 16-17, 2003, TMU
TrackingThe baseline design is a scintillating fiber tracker based on the D0 design
An alternative design based on a TPC withGEM amplification and strip readout is being studied
NufactJ03May 16-17, 2003, TMU
TPG Option
NufactJ03May 16-17, 2003, TMU
Background from RF
NufactJ03May 16-17, 2003, TMU
MICE Scifi Tracker R&D US/UK/Japan Collaboration Beam test using KEK 12 GeV PS in December, 2002
Imperial college (Dr. Ed. Mckigney) Kurare =0.3mm, =0.5mm, UK fibre =1mm MA-PMT read out Study light yield and timing resolution
Scifi bundle used in the beam test Beam test at KEK Dec, 2002
NufactJ03May 16-17, 2003, TMU
Schedule
2003 Jan. Proposal to RAL 2003 Spring Decision made 2003 Autumn Main Tracker will be decided 2004 First muon beam with Minimum setup 2007 Full Setup
NufactJ03May 16-17, 2003, TMU
MICE at RAL
NufactJ03May 16-17, 2003, TMU
Staging
NufactJ03May 16-17, 2003, TMU
Summary MICE
Demonstration of Muon cooling Measure the emittance reduction of 10 % with 10-3 accuracy
Technological challenge Various R&D activities New Ideas/material (Ring cooler, Solid absorbers)
First step to NeutrinoFactory/Muon collider Proposal was submitted to RAL.
Collaboration has been organized If everything is going fine, ionization cooling will be demonstrated
in 2007!