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Muon Ionization Cooling Experiment (MICE)

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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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