CERN Accelerating science

Article
Title Bridging Timescales for Simulating Electron Clouds
Author(s) Cohen, Ronald ; Friedman, Alex ; Vay, Jean-Luc
Affiliation (LBNL, Berkeley) ; (LLNL, Livermore, California)
Publication 2005
Imprint 2005
Note Manuscript not submitted to the proceedings
In: 21st IEEE Particle Accelerator Conference, Knoxville, TN, USA, 16 - 20 May 2005, pp.e-proc. ROPA009
Subject category Accelerators and Storage Rings
Abstract For a range of acclerator applications, accurate simulation of electron-cloud effects requires self-consistent simulation of electrons and the main positively-charged accelerated species. For systems with multipole focusing magnets, the simulation must span timescales from electron cyclotron periods to the beam duration. We have devised a scheme to bridge over the shortest (electron cyclotron) timescale based on interpolation between full dynamics and drift kinetics.* We describe the method and results for heavy-ion beam simulations. We also discuss options for bridging to ion-transit timescales.



 Záznam vytvorený 2006-02-09, zmenený 2009-03-03