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Beam Parameter Study - preliminary findings

Beam Parameter Study - preliminary findings. Tim Carlisle. Motivation. Want to explore beam parameter phase space in G4MICE Understand how sensitive cooling performance is w.r.t input beam Compare with existing results by Chris R. and others. Simulation Set-up.

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Beam Parameter Study - preliminary findings

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  1. Beam Parameter Study- preliminary findings Tim Carlisle

  2. Motivation • Want to explore beam parameter phase space in G4MICE • Understand how sensitive cooling performance is w.r.t input beam • Compare with existing results by Chris R. and others.

  3. Simulation Set-up • 4 input beams: eT = 1,3, 6 & 10mm • sPz: 1, 5, 10 & 20 MeV/c • 5000 events • MICE Stage 6 • 50 Virtual Planes placed in z=20cm increments • RF reduced to 7.3 MeV/m • Otherwise too much acceleration

  4. Results • Results shown in slides 5-7 for: • 6mm beam, sPz = 1 MeV/c. • No time spread. • 3 Datasets: • red: raw beam of muons • black: transmitted muons • blue: AmpSq Cut < 16*emittance4d

  5. Emittance(z)

  6. Muon Hits & Beta Fn. (z)

  7. Av. Pz (z) & Av. Energy (z)

  8. Cooling performance

  9. Effective Cooling: cooling heating Input emittance (mm)

  10. Input emittance (mm)

  11. To do…: • Need to add: • Momentum-Amplitude Correlation • Longitudinal amplitude cut • Produce 6d Emittance plots  Compare findings with existing results from Chris R. etc

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