| Paper |
Title |
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| WEPLS007 |
A Six-dimensional Muon Beam Cooling Experiment
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2409 |
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- R.P. Johnson, M. Alsharo'a, M.A.C. Cummings, M. Kuchnir, K. Paul, T.J. Roberts
Muons, Inc, Batavia
- D.M. Kaplan
Illinois Institute of Technology, Chicago, Illinois
- V.S. Kashikhin, V. Yarba, K. Yonehara
Fermilab, Batavia, Illinois
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Ionization cooling, a method for shrinking the size of a particle beam, is an essential technique for the use of muons in future particle accelerators. Muon colliders and neutrino factories, examples of such future accelerators, depend on the development of robust and affordable ionization cooling technologies. A 6D cooling experiment has been proposed, incorporating a novel configuration of helical and solenoidal magnets in a prototype cooling channel. This Helical Cooling Channel (HCC) experiment is being designed with simulations and prototypes to provide an affordable and striking demonstration that 6D muon beam cooling is understood well enough to enable intense neutrino factories and high-luminosity muon colliders. Because of the large amount of expected beam cooling, helium instead of hydrogen can be used for the initial experiment, avoiding the safety complications of hydrogen. Cryostats are currently being developed using internal heat exchangers for simple, effective and safe hydrogen absorber systems to use in later cooling experiments and real cooling channels. The experimental design choices and corresponding numerical simulations are reviewed.
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| WEPLS084 |
AC Field Measurements of Fermilab Booster Correctors Using a Rotating Coil System
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2574 |
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- G. Velev, J. DiMarco, D.J. Harding, V.S. Kashikhin, M.J. Lamm, A. Makulski, D.F. Orris, P. Schlabach, C. Sylvester, M. Tartaglia, J. Tompkins
Fermilab, Batavia, Illinois
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The first prototype of a new corrector package for the Fermilab Booster Synchrotron is presently in production. This water-cooled package includes normal and skew dipole, quadrupole and sextupole magnets to control orbit, tune and chromaticity of the beam over the full range of Booster energies (400 MeV-8 GeV). These correctors must make rapid excursions from the 15 Hz excitation cycle of the main synchrotron magnets, in some cases even switching polarity in approximately 1 ms at transition crossing. To measure the dynamic changes in the field during operation, a new method based on a relatively slow rotating coil system is proposed. The method pieces together the measured flux from successive current cycles to reconstruct the field harmonics. This paper describes the method and presents initial field quality measurements from the corrector prototype.
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