Open AccessEmittance growth from transient coherent synchrotron radiation
Author(s) -
C. L. Bohn,
R. Li,
J.J. Bisognano
Publication year - 1996
Language(s) - English
Resource type - Reports
DOI - 10.2172/377713
Subject(s) - betatron , thermal emittance , bunches , physics , synchrotron radiation , excited state , transverse plane , transient (computer programming) , synchrotron , optics , achromatic lens , superposition principle , radiation , proton synchrotron , atomic physics , computational physics , beam (structure) , nuclear physics , quantum mechanics , structural engineering , computer science , engineering , operating system
If the energies of individual particles in a bunch change as the bunch traverses a bending system, even if it is achromatic, betatron oscillations can be excited. Consequently, the transverse emittance of the bunch will grow as it moves downstream. Short bunches may be particularly susceptible to emission of coherent synchrotron radiation which can act back on the particles to change their energies and trajectories. Because a bend spans a well-defined length and angle, the bunch-excited wakefield and its effect back on the bunch are inherently transient. We outline a recently developed theory of this effect and apply it to example bending systems