Journal Club presentation Helena Pikhartova April 25, 2018
Summary of article 2/7
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 . 2 µ s in rest frame) 3/7
Muon Ionization Cooling Experiment (MICE) ✽ at RAL ✽ designed to demonstrate ionization cooling of muons 4/7
Experiment setup ✽ Muon beam of energy between 140 and 240 MeV 5/7
Simulation results Beam energy: Emittance results: ✽ Emittance improvement (15% , 8% , 6%) ✽ Energy ∼ 19 MeV decrease ✽ Maximum transmission ∼ 99% 6/7
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.” 7/7
The end of presentation 1/2
Discussion 2/2
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