### Abstract

A new unaveraged 3D parallelized numerical model has been developed that will allow investigation of previously unexplored FEL physics. Unaveraged models are required to describe such effects as amplification of Coherent Spontaneous Emission and non-localised electron dynamics (see e.g. [1] and refs therein). A previous parallelized 3D model [2] was based upon a mixed finite element/Fourier method, however, there were some limitations in the parallel algorithm and numerical routines. These limitations are removed in the new model presented here by using only transforms in Fourier space enabling more effective data or-ganization across multiple parallel processors and therefore allowing larger, more complex FEL systems to be studied. Furthermore, unlike the previous 3D model, which uses commercial numerical packages, the new simulation code uses only open-source routines.

Original language | English |
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Title of host publication | FEL 2009 |

Subtitle of host publication | Proceedings of 31st International Free Electron Laser Conference |

Editors | Sue Waller, Hywel Owen, Volker Schaa |

Pages | 115-118 |

Number of pages | 4 |

Publication status | Published - 23 Aug 2009 |

Event | Free-Electron Laser Conference 2009 - Liverpool, United Kingdom Duration: 23 Aug 2009 → 28 Aug 2009 |

### Conference

Conference | Free-Electron Laser Conference 2009 |
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Abbreviated title | FEL 2009 |

Country | United Kingdom |

City | Liverpool |

Period | 23/08/09 → 28/08/09 |

### Keywords

- free electron laser
- computational physics
- parallel and high performance computing
- electron pulse
- radiation
- unaveraged models
- simulation code

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## Cite this

Campbell, L. T., Martin, R., & McNeil, B. W. J. (2009). A fully 3D unaveraged non-localized electron, parallelized-computational model of the FEL. In S. Waller, H. Owen, & V. Schaa (Eds.),

*FEL 2009: Proceedings of 31st International Free Electron Laser Conference*(pp. 115-118). [MOPC39]