Hyperfine Interactions

, 240:35 | Cite as

Realistic 3D implementation of electrostatic elements for low energy machines

  • V. RodinEmail author
  • J. R. Hunt
  • J. Resta-Lopez
  • B. Veglia
  • C. P. Welsch
Open Access
Part of the following topical collections:
  1. Proceedings of the 13th International Conference on Low Energy Antiproton Physics (LEAP 2018) Paris, France, 12-16 March 2018


Novel antimatter experiments at CERN require high intensity, low energy (<100 keV) antiproton beams. Each experiment has a set of desirable beam parameters. To achieve this, and obtain the greatest efficiency, transfer lines will be based on electrostatic optics. Unfortunately, only a small amount of simulation codes allow realistic and flexible implementation of such elements. In this contribution, methods for accurately creating and tracking through electrostatic optical elements are presented, utilising a combination of a modified version of G4Beamline (Roberts and Kaplan 2007) and finite element methods (FEM). To validate our approaches the transfer line from the ELENA (Chohan et al. 2014) ring to the ALPHA experiment was chosen as a basis for particle tracking studies. A range of approaches to modelling the electrostatic elements were explored, ranging from simple field expressions, to the complex field maps used in the final model. An investigation into the achievable beam quality at ALPHA is presented.


ELENA G4Beamline Antimatter Electrostatic optics 



We would like to thank our friends and colleagues at CERN for their helpful input and collaboration.

Funding Information

This project has received funding from the European Union’s Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie grant agreement No 721559.


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Copyright information

© The Author(s) 2019

Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (, which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

Authors and Affiliations

  1. 1.University of Liverpool and The Cockcroft InstituteLiverpoolUK

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