Linear Theory of Ionization Cooling in 6D Phase Space

Phys. Rev. Lett. 88, 184801 – Published 18 April 2002
Chun-xi Wang and Kwang-Je Kim

Abstract

A linear theory is developed for ionization cooling of muon beams in periodic channels that can provide cooling of the transverse emittances and also of the longitudinal emittance via emittance exchange. The channels incorporate solenoids and quadrupoles for transverse focusing, dipoles to generate dispersion, wedged absorbers for ionization, and rf cavities for acceleration. The beam evolution near equilibrium is described by coupled first-order differential equations for five generalized emittances with two excitation sources. The results should be useful for understanding the cooling process and for designing cooling channels of future muon colliders and neutrino factories.

DOI: http://dx.doi.org/10.1103/PhysRevLett.88.184801

  • Received 21 January 2002
  • Published 18 April 2002

© 2002 The American Physical Society

Authors & Affiliations

Chun-xi Wang

  • Argonne National Laboratory, 9700 South Cass Avenue, Argonne, Illinois 60439

Kwang-Je Kim

  • University of Chicago, 5270 South Ellis Avenue, Chicago, Illinois 60637
  • and Argonne National Laboratory, 9700 South Cass Avenue, Argonne, Illinois 60439

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