Future Muon Beams at Neutrino Factory

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Future Muon Beams at Neutrino Factory

• Discussion at NuFACT02 WG4
• Koji YOSHIMURA

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Outline

• Muon Beam Parameters
• Requirements for each physics case
• Future Muon Beams?
• Summary

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Muon Beam Parameters

• Charge
• Intensity
• Timing Structure
• Energy
• Momentum spread
• Purity
• Beam size
• Polarization

J. Ayst et al hep-th/0101297
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LFV Searches

• m e g
• MEG at PSI, 2004
• DC beam 108 m/s
• BR10-13
• Accidental background
• Detector Improvement
• Polarization

• mN eN
• MECO at BNL,2006?
• Pulsed beam 1011m/s
• 10-9 extinction
• Pion contamination
• Energy Spread
• High Intensity
• Purity

PRISM
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Muon Decay

• Lifetime
• RAL 14ppm
• muLAN 1ppm
• FAST at PSI 1ppm
• Pile up, Depolalize
• 1030 kHz sharp bunched beam

• Michel Parameter
• TWIST at TRIUMF
• asynmetry
• 100 pol
• High Energy Resolution
• Higher intensity???

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Muon Momenta

• g-2
• BNL experiment
• am deviate from SM
• by 2 3 s
• Statistical error dominates
• 1001kHz, Statistics x100

• EDM
• BNL 3.73.4x10-19
• Goal d10-24ecm
• High Intensity with Pol
• NP2 1016

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Bound Muon System

• mCF
• Close to Scientific Break Even
• Intense beam
• To study with extreme target condition
• To study precisely

• mXray / mSR radiography
• Intense Pencil beam
• dE small

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Requirements
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Recent Beam Development

• Pion Capture/Target
• DAI OMEGA, KEK
• W x20

• Phase Rotation/New beam
• PRISM
• dE/E a few
• Very Slow Beam
• dE 110 eV

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Possible Muon Complexpre-n factory?
Neutrino Factory
mNeN mCF mXray
J-PARC
PRISM-II
PRISM
EDM
50 GeV proton 90 Hz
Target RD Facility
to g-2 Ring
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Summary

• Muon beams for advanced muon sciences
• Better Beam for physics (LFV, g-2, EDM)
• mCF
• Micro Beam for Life Sciences
• Preparatory Work for Neutrino Factory
• Large acceptance p/m capture, Targetry
• DAI OMEGA, MECO, PRISM
• Phase Rotation, Muon cooling
• PRISM, Cooling, MLFG-m, Zero-enegy