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Overview of MICE Experimental Plans and Baseline Program for Muon Studies

This document outlines the proposed experimental plans for the MICE (Muon Ionization Cooling Experiment) initiative, including various assumptions and the baseline program. MICE aims to define specific experiments that will evaluate muon cooling through changes in emittance, absorber thicknesses, and RF voltage settings. The full program encompasses extensive simulation evaluations as well as a detailed run schedule, relying on expert opinions for design choices. Future work will further define the parameters necessary for the success of MICE in advancing muon physics.

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Overview of MICE Experimental Plans and Baseline Program for Muon Studies

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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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