Journal Article

PUBDB-2026-00462

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Suppression of bunch destruction under resonant excitation of the plasma wakefield

Demydenko, I. V. (Corresponding author) ; Maslov, V.DESY* ; Onishchenko, I. M.

2026
Elsevier [Amsterdam]

This record in other databases:  

Please use a persistent id in citations: doi:10.1016/j.nima.2025.170851  doi:10.3204/PUBDB-2026-00462

Abstract: Plasma wakefield acceleration offers a compact and efficient method for generating high-brightness relativistic electron beams. Applications such as free-electron lasers and particle colliders demand high-quality bunches with stable, predictable profiles. However, previous studies have shown that a resonant sequence of electron bunches, where the spacing matches the plasma wavelength is prone to longitudinal instability, leading to progressive bunch destruction by gradual defocusing. In this work, we analyse the underlying mechanism of this instability, which arises from a phase shift between the bunch and the wake radial focusing force $F$$_r$ during the system’s evolution. We propose and validate, both numerically and analytically, a method to suppress the instability by shifting all bunches relative to the first into regions of the wakefield where $F$$_r$ is focusing and longitudinal derivative $\partial_z F_r \neq 0$ is maximized, ensuring stable propagation.

---

Contributing Institute(s):

1. Plasma Acceleration and Laser Group (MPL)

Research Program(s):

1. 621 - Accelerator Research and Development (POF4-621) (POF4-621)

Experiment(s):

1. No specific instrument

Appears in the scientific report 2026

---

Database coverage:
; ; ; ; Clarivate Analytics Master Journal List ; Current Contents - Engineering, Computing and Technology ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; Essential Science Indicators ; IF < 5 ; JCR ; Nationallizenz ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

---