Optimization and beam control in large-emittance accelerators: Neutrino factories;

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Schemes for intense sources of high-energy muons require collection, rf capture, and transport of particle beams with unprecedented emittances, both longitudinally and transversely. These large emittances must be reduced or ''cooled'' both in size and in energy spread before the muons can be efficiently accelerated. Therefore, formation of muon beams sufficiently intense to drive a Neutrino Factory or Muon Collider requires multi-stage preparation. Further, because of the large beam phase space which must be successfully controlled, accelerated, and transported, the major stages that comprise such a facility: proton driver, production, capture, phase rotation, cooling, acceleration, and storage are complex and ... continued below

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13 pages

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Johnstone, Carol August 23, 2004.

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Description

Schemes for intense sources of high-energy muons require collection, rf capture, and transport of particle beams with unprecedented emittances, both longitudinally and transversely. These large emittances must be reduced or ''cooled'' both in size and in energy spread before the muons can be efficiently accelerated. Therefore, formation of muon beams sufficiently intense to drive a Neutrino Factory or Muon Collider requires multi-stage preparation. Further, because of the large beam phase space which must be successfully controlled, accelerated, and transported, the major stages that comprise such a facility: proton driver, production, capture, phase rotation, cooling, acceleration, and storage are complex and strongly interlinked. Each of the stages must be consecutively matched and simultaneously optimized with upstream and downstream systems, meeting challenges not only technically in the optics and component design, but also in the modeling of both new and extended components. One design for transverse cooling, for example, employs meter-diameter solenoids to maintain strong focusing--300-500 mr beam divergences--across ultra-large momentum ranges, {ge} {+-}20% {delta}p/p, defying conventional approximations to the dynamics and field representation. To now, the interplay of the different systems and staging strategies has not been formally addressed. This work discusses two basic, but different approaches to a Neutrino Factory and how the staging strategy depends on beam parameters and method of acceleration.

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13 pages

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  • ICALEPCS 2003, Gyeongju (KR), 10/13/2003--10/17/2003

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  • Report No.: FERMILAB-Conf-03/481-AD
  • Grant Number: AC02-76CH03000
  • Office of Scientific & Technical Information Report Number: 828340
  • Archival Resource Key: ark:/67531/metadc780890

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  • August 23, 2004

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  • Dec. 3, 2015, 9:30 a.m.

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  • Aug. 5, 2016, 3:17 p.m.

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Johnstone, Carol. Optimization and beam control in large-emittance accelerators: Neutrino factories;, article, August 23, 2004; Batavia, Illinois. (digital.library.unt.edu/ark:/67531/metadc780890/: accessed August 24, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.