Up-sampling of electron beam simulation particles with addition of shot-noise

P. Traczykowski; L. T. Campbell; B. W. J. McNeil

doi:10.1016/j.cpc.2023.108661

Up-sampling of electron beam simulation particles with addition of shot-noise

P. Traczykowski, L. T. Campbell, B. W. J. McNeil

Research output: Contribution to journal › Article › peer-review

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Abstract

An algorithm and numerical code for the up-sampling of a system of particles, from a smaller to a larger number, is described. The method introduces a Poissonian 'shotnoise' to the up-sampled distribution, typical of the noise statistics arising in a bunch of particles generated by a particle accelerator. The algorithm is applied to a 6-Dimensional phase-space distribution of relatively few simulation particles, representing an electron beam generated by particle accelerator modelling software, for subsequent injection into an Free Electron Laser (FEL) amplifier which is used here to describe the model. A much larger number of particles is usually required to model the FEL lasing process than is required to model the electron beam accelerators that drive it.A numerical code developed from the algorithm was then used to generate electron bunches for injection into to an unaveraged 3D FEL simulation code, Puffin. Results show good qualitative and quantitative agreement with analytical theory. The program and user manual is available for download.

Original language	English
Article number	108661
Number of pages	17
Journal	Computer Physics Communications
Volume	286
Early online date	20 Jan 2023
DOIs	https://doi.org/10.1016/j.cpc.2023.108661
Publication status	Published - 31 May 2023

Funding

We are grateful to funding from the Science and Technology Facilities Council (Agreement Number 4163192 Release #3); EPSRC grant EP/K000586/1 ; EPSRC Grant EP/M011607/1 .

Keywords

statistical noise
particle accelrator
free electron laser

Access to Document

10.1016/j.cpc.2023.108661Licence: CC BY 4.0

Traczykowski-etal-CPC-2023-Up-sampling-of-electron-beam-simulation-particlesFinal published version, 3.17 MBLicence: CC BY 4.0

https://arxiv.org/abs/2212.07905Licence: CC BY-NC-SA 4.0

1 Active
2 Finished

STFC MoA 4132361: Free Electron Lasers and Advanced Light Sources
McNeil, B. (Principal Investigator)
STFC Science and Technology Facilities Council
1/04/11 → 31/03/26
Project: Research
Simulations for Future X-ray Free electron Lasers
McNeil, B. (Principal Investigator)
EPSRC (Engineering and Physical Sciences Research Council)
1/02/15 → 31/01/17
Project: Research
E Infrastructure Bid - Capital Equipment Bid
Littlejohn, D. (Principal Investigator), Fedorov, M. (Co-investigator), Mulheran, P. (Co-investigator) & Reese, J. (Co-investigator)
EPSRC (Engineering and Physical Sciences Research Council)
20/01/12 → 31/03/12
Project: Research

1 Working Paper/Preprint

Up-sampling of electron beam simulation particles with addition of shot-noise
Traczykowski, P., Campbell, L. T. & McNeil, B. W. J., 15 Dec 2022, (Submitted) Ithaca, N.Y., 16 p.
Research output: Working paper › Working Paper/Preprint

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34 Downloads (Pure)

Cite this

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title = "Up-sampling of electron beam simulation particles with addition of shot-noise",

abstract = "An algorithm and numerical code for the up-sampling of a system of particles, from a smaller to a larger number, is described. The method introduces a Poissonian 'shotnoise' to the up-sampled distribution, typical of the noise statistics arising in a bunch of particles generated by a particle accelerator. The algorithm is applied to a 6-Dimensional phase-space distribution of relatively few simulation particles, representing an electron beam generated by particle accelerator modelling software, for subsequent injection into an Free Electron Laser (FEL) amplifier which is used here to describe the model. A much larger number of particles is usually required to model the FEL lasing process than is required to model the electron beam accelerators that drive it.A numerical code developed from the algorithm was then used to generate electron bunches for injection into to an unaveraged 3D FEL simulation code, Puffin. Results show good qualitative and quantitative agreement with analytical theory. The program and user manual is available for download.",

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N2 - An algorithm and numerical code for the up-sampling of a system of particles, from a smaller to a larger number, is described. The method introduces a Poissonian 'shotnoise' to the up-sampled distribution, typical of the noise statistics arising in a bunch of particles generated by a particle accelerator. The algorithm is applied to a 6-Dimensional phase-space distribution of relatively few simulation particles, representing an electron beam generated by particle accelerator modelling software, for subsequent injection into an Free Electron Laser (FEL) amplifier which is used here to describe the model. A much larger number of particles is usually required to model the FEL lasing process than is required to model the electron beam accelerators that drive it.A numerical code developed from the algorithm was then used to generate electron bunches for injection into to an unaveraged 3D FEL simulation code, Puffin. Results show good qualitative and quantitative agreement with analytical theory. The program and user manual is available for download.

AB - An algorithm and numerical code for the up-sampling of a system of particles, from a smaller to a larger number, is described. The method introduces a Poissonian 'shotnoise' to the up-sampled distribution, typical of the noise statistics arising in a bunch of particles generated by a particle accelerator. The algorithm is applied to a 6-Dimensional phase-space distribution of relatively few simulation particles, representing an electron beam generated by particle accelerator modelling software, for subsequent injection into an Free Electron Laser (FEL) amplifier which is used here to describe the model. A much larger number of particles is usually required to model the FEL lasing process than is required to model the electron beam accelerators that drive it.A numerical code developed from the algorithm was then used to generate electron bunches for injection into to an unaveraged 3D FEL simulation code, Puffin. Results show good qualitative and quantitative agreement with analytical theory. The program and user manual is available for download.

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KW - particle accelrator

KW - free electron laser

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Up-sampling of electron beam simulation particles with addition of shot-noise

Abstract

Funding

Keywords

Access to Document

Fingerprint

Projects

STFC MoA 4132361: Free Electron Lasers and Advanced Light Sources

Simulations for Future X-ray Free electron Lasers

E Infrastructure Bid - Capital Equipment Bid

Research output

Up-sampling of electron beam simulation particles with addition of shot-noise

Cite this