Open AccessNumerical investigations of resistive wall wake potentials
Author(s) -
Yaman F.
Publication year - 2020
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/el.2019.2830
Subject(s) - bunches , wake , resistive touchscreen , beam (structure) , physics , instability , mechanics , computation , particle beam , computational physics , optics , electrical engineering , computer science , engineering , algorithm
The aim of this Letter is to examine and identify longitudinal resistive wall wake potential behaviours of medium‐ β long bunches and ultra‐relativistic short bunches using different beam and pipe properties for particle accelerator applications. The lack of detailed analysis in current literature for the chosen set of parameters ignites this work. Since computations of wake potentials for the considered beam parameters by particle‐in‐cell codes are extremely difficult the author uses an analytical approach. Numerical integrations are evaluated for large domains with fine discretisations. The author observes that conductivity of beam pipe has a larger impact on medium‐ β long bunches, variation of beam velocity effects wakes of short bunches more significantly, beam radii changes may have a contribution to instability for low energy short bunches. Interesting numerical results are presented and their physical explanations are discussed in this Letter.