Journal Club presentation Helena Pikhartova April 25, 2018 Summary - - PowerPoint PPT Presentation

Journal Club presentation

Helena Pikhartova April 25, 2018

Summary of article

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Cooling techniques

Precesses aimed to reduce the emittance of a particle beam ✽ synchrotron-radiation cooling - used only for electron beams ✽ laser cooling - for ion and atomic beams ✽ stochastic cooling - dependent on the bandwidth of the stochastic-cooling system relative to the frequency spread of the particle beam ✽ electron cooling - limited by the available electron density and the electron-beam energy and emittance ✽ ionization cooling - beam is passed through some material Main constraint for muon cooling → muon lifetime (2.2µs in rest frame)

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Muon Ionization Cooling Experiment (MICE)

✽ at RAL ✽ designed to demonstrate ionization cooling of muons

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Experiment setup

✽ Muon beam of energy between 140 and 240 MeV

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Simulation results

Emittance results: Beam energy: ✽ Emittance improvement (15%, 8%, 6%) ✽ Energy ∼ 19 MeV decrease ✽ Maximum transmission ∼ 99%

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Conclusion

✽ The results of simulations are promising ✽ MICE was taking data in 2016 and 2017, publications in preparation

• emittance measurement, field-off scattering

✽ According to their plans, data taking should be happening at this time ✽ Talks and posters will be at IPAC2018 in Vancouver ”The successful completion of the MICE programme would therefore herald the establishment of a new technique for particle physics.”

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The end of presentation

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Discussion

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