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Neutrino Factory/Muon Collider Document 513-v1

Low-Energy Ionization Cooling of Muons for Reverse Emittance Exchange

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Document type:
MuCool Note
Submitted by:
David V Neuffer
Updated by:
David V Neuffer
Document Created:
31 May 2007, 23:17
Contents Revised:
31 May 2007, 23:17
Metadata Revised:
31 May 2007, 23:17
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At low muon momenta, ionization energy losses cool the beam transversely while heating the beam longitudinally. Transverse emittances can be minimized at the cost of enlarged longitudinal emittance. The specific cooling rate (dP/ds)/P scales as 1/v^4, which compresses cooling lengths to impractically small systems. However use of gas absorbers decompresses these lengths and may enable practical beam manipulation. The combination of stronger focusing, H2 gas absorbers and low-momentum transverse cooling may enable cooling to e_N,eq as low as 0.000001m, much smaller than the previous collider baseline values.

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muon cooling low energy
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