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Asfandiyarov_NNN11_poster_abstract.txt

Heidt, Christopher, 26 October 2011 20:23

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Title:
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 Progress in the construction of the MICE cooling channel
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Abstract:
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 The international Muon Ionization Cooling Experiment (MICE), sited
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at Rutherford Appleton Laboratory in the UK, aims to build and test
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one cell of a realistic ionization cooling channel lattice. This
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comprises three Absorber Focus Coils (AFC) modules and two RF Coupling
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Coil (RFCC) modules; both are technically challenging. The Focus Coils
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(FC) are dual-coil superconducting solenoids, in close proximity,
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wound on a common mandrel. At the center of each FC there is a 20
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letters liquid-hydrogen absorber, operating at about 14 K, to serve as
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the energy loss medium for the ionization cooling process. The
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longitudinal beam momentum is restored in the RFCC modules, each of
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which houses four 201.25-MHz RF cavities whose irises are closed with
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42-cm diameter thin Beryllium windows. To contain the muon beam, each
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RFCC module also has a 1.4-m diameter superconducting coupling
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solenoid surrounding the cavities. Both types of magnet are cooled
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with multiple 2-stage cryogenic-coolers, each delivering 1.5 W of
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cooling at 4 K. Designs for all components are complete and
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fabrication is under way. Descriptions of the various components,
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design requirements, and construction status is presented.