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Muon Ionization Cooling Experiment (MICE)

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

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Muon Ionization Cooling Experiment (MICE)

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  1. Muon Ionization Cooling Experiment (MICE) Koji Yoshimura Institute of Particle and Nuclear Science High Energy Accelerator Research Organization (KEK)

  2. NufactJ03 May 16-17, 2003, TMU Outline • What’s is MICE? • Aim of MICE • R&D activities • Current Status & Schedule

  3. NufactJ03 May 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

  4. NufactJ03 May 16-17, 2003, TMU European Scheme of n Factory

  5. NufactJ03 May 16-17, 2003, TMU Why cooling?

  6. NufactJ03 May 16-17, 2003, TMU Principle of Ionization cooling Approximation of the cooling relation In principle ionization cooling should work, but in practice it is subtle and complicated

  7. NufactJ03 May 16-17, 2003, TMU MICE Experimental Apparatus

  8. NufactJ03 May 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 emittanceetc.

  9. NufactJ03 May 16-17, 2003, TMU Cooling Ring • Cost saving • RF can be used many times • Longitugional Cooling • Wedge shaped absorber

  10. NufactJ03 May 16-17, 2003, TMU R&D Activities • Absorber • Convection type KEK/Osaka • RF • Magnet • Detectors • Scifi Tracker Osaka/KEK • Etc.

  11. NufactJ03 May 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 solid-Ne • Modify flow direction • Absorber II Setup of KEK bench test of convection absorber I

  12. NufactJ03 May 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

  13. NufactJ03 May 16-17, 2003, TMU Emittance Measurement (P. Janot)

  14. NufactJ03 May 16-17, 2003, TMU Tracking The baseline design is a scintillating fiber tracker based on the D0 design An alternative design based on a TPC with GEM amplification and strip readout is being studied

  15. NufactJ03 May 16-17, 2003, TMU TPG Option

  16. NufactJ03 May 16-17, 2003, TMU Background from RF

  17. NufactJ03 May 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 f=0.3mm, f=0.5mm, UK fibre f=1mm • MA-PMT read out • Study light yield and timing resolution Scifi bundle used in the beam test Beam test at KEK Dec, 2002

  18. NufactJ03 May 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

  19. NufactJ03 May 16-17, 2003, TMU MICE at RAL

  20. NufactJ03 May 16-17, 2003, TMU Staging

  21. NufactJ03 May 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!

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