Symmetries and invariants of the oscillator and envelope equations with time-dependent frequency

The single-particle dynamics in a time-dependent focusing field is examined. The existence of the Courant-Snyder invariant, a fundamental concept in accelerator physics, is fundamentally a result of the corresponding symmetry admitted by the harmonic oscillator equation with linear time-dependent fr...

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Bibliographic Details
Main Authors: Hong Qin, Ronald C. Davidson
Format: Article
Language:English
Published: American Physical Society 2006-05-01
Series:Physical Review Special Topics. Accelerators and Beams
Online Access:http://doi.org/10.1103/PhysRevSTAB.9.054001