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MICE Experiments

MICE Experiments. Introduction Disclaimers Assumptions Baseline programme Full programme. Introduction and Disclaimer. One question asked by Review Panel: What experiments do we plan to do with MICE? We had sort of said: vary everything, but not defined

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MICE Experiments

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  1. MICE Experiments • Introduction • Disclaimers • Assumptions • Baseline programme • Full programme

  2. Introduction and Disclaimer • One question asked by Review Panel: What experiments do we plan to do with MICE? • We had sort of said: vary everything, but not defined • Need to define this soon for: - Review Panel - Final design and engineering for MICE • Programme presented is based on opinions (SG + others) • Simulations to check are just starting • All opinions are equally valid, so don’t hold back! • Emittance change is the important thing

  3. Assumptions …..taken from the proposal Solenoid decay channel: 3000 muons/s Quadrupole decay channel: 300 muons/s • 100 muons/s • 10 muons/s • 0.3 hours • 2.7 hours • 1.5 hours • 15.0 hours “Useful” muons = Losses X in-phase 0.25 X 0.17 = X0.04 10-3 precision  105 muons But efficiency  x2systematic checks  x2.5 ISIS runs for ~170 days/year  solenoid channel = 2720 runs  quad channel = 272 runs Define: Baseline programme ~272 runs Full programme + ~2450 runs

  4. Full Programme (1) Absorbers:  Use 6: LH2, LHe, LiH, Li, Be, Al

  5. Full Programme (2) Absorber thicknesses • Lots of discussion • If we’re gonna do it, may as well do it properly • LH2 with central absorber empty • LH2 with LHe in central absorber • LiH/Li: 5 thicknesses: 0.25 to 1.75 x standard (3) RF voltage • Backgrounds suggest we need to be careful • One point as high as backgrounds allow • Rest down  2/3 additional voltages

  6. Full Programme Input emittance 6.256 LiH LH2 + vac LH2 + LHe

  7. Full Programme (4) Emittance • By changing the absorber thickness at TOF1 • Avoid correlations if possible • Probably most important parameter • 10 diffferent emittances around equilibrium (5) Beam momentum • Scan around central momentum • 5 momenta in total • both signs

  8. Full Programme (6) Optical configurations • i.e. beta • Six are given in the proposal • There is also the possibility of changing field sign • 2 diffferent configurations used

  9. Putting that together Runs = targets x RF voltage x emittance x momentum x beta = 6 + 7 x 4 x 10 x 5 + 1 x 6 + 1 = 21840! • Do only 3 RF voltages= 16380 • Can do everything only for 3 targets: LH2, LiH, Li = 3780 • Scan all parameters all other targets = 33 + 110 + 66 + 77 = 286 Total = 4066 runs = 18 months

  10. Baseline Programme Runs = targets x RF voltage x emittance x momentum x beta = 1 x 1 x 8 x 4 + 1 x 5 + 1 = 240 • Do everything for 1 target only: LH2 = 240 • Scan all parameters for LHe, LiH, Li + thickneses (3 LiH) = 72 + 45 + 54 = 152 • Scan emittance only Be and Al = 16 Total = 408 runs = 18 months

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