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Neutrino Factory/Muon Collider Document 203-v1

The Double Flip Cooling Channel (Study II version)

Document #:
Document type:
MuCool Note
Submitted by:
John Urish
Updated by:
John Urish
Document Created:
20 Apr 2001, 12:00
Contents Revised:
20 Apr 2001, 12:00
Metadata Revised:
20 Apr 2001, 12:00
Actually Revised:
14 Sep 2006, 13:35
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A 217 m long ionization cooling system consisting of three homogeneous
solenoids with two field-flip sections is proposed as a possible
cooling channel for the neutrino factory. The channel cools transverse
emittance by using 87 liquid hydrogen absorbers 30-39 cm long, and an equal
number of 201.25 MHz linacs about 2 m long. The first flip occurs at a
relatively small magnetic field, B=3 T, to keep the longitudinal motion
under control. The field is then increased adiabatically from -3 to -7 T, and
a second field flip performed at B=7 T. This cooling channel is studied
both theoretically and through a detailed simulation using GEANT4. With a
beam produced by a 16 GeV proton driver, a carbon target, a minicooler and a
buncher, the system provides about 0.076 muons per incident proton.
Transmission and emittance predictions at the end of the channel are presented.

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This is revision # 2
Posted by Elvira

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Notes and Changes:
Balvekov, Black, Elvira, Lebrun, Neuffer, Rey, Rimmer, Spentzouris
Publication Information:
DF channel version simulated for Feasibility Study II
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