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Neutrino Factory/Muon Collider Document 276-v1

Cooling of a Compressed Bunch in the RFOFO Ring

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MuCool Note
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John Urish
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John Urish
Document Created:
17 Jun 2003, 12:00
Contents Revised:
17 Jun 2003, 12:00
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17 Jun 2003, 12:00
Actually Revised:
14 Sep 2006, 13:35
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Cooling of a Compressed Bunch in the RFOFO Ring
V.Balbekov, Fermilab

Front-end cooling simulation of a 'compressed' bunch is continued.
Injected bunch for this stage is taken from a system considered in
Ref.[1] which includes a proton driver, target station, phase rotation
channel, and a ring bunch compressor. Parameters of this bunch are:
transverse emittance 6.3 mm, longitudinal one 25 mm, yield 0.11 muons
per incident proton. The further cooling is produced by means of RFOFO
ring cooler of length 33 m with 200 MHz, 16 MeV/m accelerating system
and liquid hydrogen absorbers. 14 m matching section between the bunch
compressor and the cooler is considered also. After the cooling,
parameters of the bunch are: transverse emittance 2.5 mm, longitudinal
one 3.2 mm, yield 0.054 muons per proton.

[1] V.I.Balbekov, N.V.Mokhov, Fermilab MCNote-272 (2003).

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