An ionization cooling channel for muon beams based on alternating solenoids

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The muon collider requires intense, cooled muon bunches to reach the required luminosity. Due to the limited life-time of the muon, the cooling process must take place very rapidly. Ionization cooling seems to be our only option, given the large emittances of the muon beam from pion decay. However, this ionization cooling method has been found quite difficult to implement in practice. We describe a scheme based on the use of liquid hydrogen absorbers fol-lowed by r.f. cavities (�pillbox� or �open iris� type), em-bedded in a transport lattice based on high field solenoids. These solenoidal fields are reversed periodically in ... continued below

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al., Juan C. Gallardo et April 16, 1999.

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The muon collider requires intense, cooled muon bunches to reach the required luminosity. Due to the limited life-time of the muon, the cooling process must take place very rapidly. Ionization cooling seems to be our only option, given the large emittances of the muon beam from pion decay. However, this ionization cooling method has been found quite difficult to implement in practice. We describe a scheme based on the use of liquid hydrogen absorbers fol-lowed by r.f. cavities (�pillbox� or �open iris� type), em-bedded in a transport lattice based on high field solenoids. These solenoidal fields are reversed periodically in order to suppress the growth of the canonical angular momentum. This channel has been simulated in detail with independent codes, featuring conventional tracking in e.m. fields and de-tailed simulation of multiple scattering and straggling in the the absorbers and windows. These calculations show that the 15 Tesla lattice cools in 6-Dphase space by a factor {approx} 2 over a distance of 20 m.

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98 Kilobytes

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  • Particle Accelerator Conference, 1999 (PAC99), New York, New York, March 28-April 2, 1999

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  • Other: DE00005808
  • Report No.: FERMILAB-Conf-99/080-E
  • Grant Number: NONE
  • Office of Scientific & Technical Information Report Number: 5808
  • Archival Resource Key: ark:/67531/metadc692309

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  • April 16, 1999

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  • Aug. 14, 2015, 8:43 a.m.

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  • April 18, 2016, 2:43 p.m.

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al., Juan C. Gallardo et. An ionization cooling channel for muon beams based on alternating solenoids, article, April 16, 1999; Batavia, Illinois. (digital.library.unt.edu/ark:/67531/metadc692309/: accessed October 16, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.