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Neutrino Factory/Muon Collider Document 551-v1

A Possible Hybrid Cooling Channel for a Neutrino Factory

Document #:
NFMCC-doc-551-v1
Document type:
Conference Publication
Submitted by:
Juan C Gallardo
Updated by:
Juan C Gallardo
Document Created:
18 May 2010, 10:03
Contents Revised:
18 May 2010, 10:03
Metadata Revised:
18 May 2010, 10:05
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Abstract:
A Neutrino Factory requires an intense and well-cooled
(in transverse phase space) muon beam. We discuss a
hybrid approach for a linear 4D cooling channel
consisting of high-pressure gas-filled RF cavities—
potentially allowing high gradients without breakdown—
and discrete LiH absorbers to provide the necessary
energy loss that results in the required muon beam
cooling. We report simulations of the channel
performance and its comparison with the vacuum case;
we also briefly discuss technical and safety issues
associated with cavities filled with high-pressure
hydrogen gas. Even with additional windows that might
be needed for safety reasons, the channel performance is
comparable to that of the original, all-vacuum Feasibility
Study 2a channel on which our design is based. If tests
demonstrate that the gas-filled RF cavities can operate
effectively with an intense beam of ionizing particles
passing through them, our approach would be an
attractive way of avoiding possible breakdown problems
with a vacuum RF channel.
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