FLS2018 - List of Keywords (bunching)

Paper	Title	Other Keywords	Page
THA1WA03	GPT-CSR: A New Simulation Code for CSR Effects	ion, simulation, radiation, electron	157
	S.B. van der Geer, M.J. de Loos Pulsar Physics, Eindhoven, The Netherlands I. Setija, P.W. Smorenburg ASML Netherlands B.V., Veldhoven, The Netherlands P.H. Williams STFC/DL/ASTeC, Daresbury, Warrington, Cheshire, United Kingdom
	For future applications of high-brightness electron beams, including the design of next generation FEL's, correct correct simulation of Coherent Synchrotron Radiation (CSR) is essential as it potentially degrades beam quality to unacceptable levels. However, the long interaction lengths compared to the bunch length, numerical cancellation, and difficult 3D retardation conditions make accurate simulation of CSR effects notoriously difficult. To ease the computational burden, CSR codes often make severe simplifications such as an ultra relativistic bunch travelling on a prescribed reference trajectory. Here we report on a new CSR model, implemented in the General Particle Tracer (GPT) code, that avoids most of the usual assumptions: It directly evaluates the Lienard-Wiechert potentials based on the stored history of the beam, it makes no assumptions about reference trajectories, while also taking into account the transverse size of the beam. First results demonstrating microbunching gain in a chicane are presented.
	Slides THA1WA03 [1.799 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-FLS2018-THA1WA03
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Other Keywords

Page

THA1WA03

GPT-CSR: A New Simulation Code for CSR Effects

ion, simulation, radiation, electron

157

S.B. van der Geer, M.J. de Loos
Pulsar Physics, Eindhoven, The Netherlands
I. Setija, P.W. Smorenburg
ASML Netherlands B.V., Veldhoven, The Netherlands
P.H. Williams
STFC/DL/ASTeC, Daresbury, Warrington, Cheshire, United Kingdom

For future applications of high-brightness electron beams, including the design of next generation FEL's, correct correct simulation of Coherent Synchrotron Radiation (CSR) is essential as it potentially degrades beam quality to unacceptable levels. However, the long interaction lengths compared to the bunch length, numerical cancellation, and difficult 3D retardation conditions make accurate simulation of CSR effects notoriously difficult. To ease the computational burden, CSR codes often make severe simplifications such as an ultra relativistic bunch travelling on a prescribed reference trajectory. Here we report on a new CSR model, implemented in the General Particle Tracer (GPT) code, that avoids most of the usual assumptions: It directly evaluates the Lienard-Wiechert potentials based on the stored history of the beam, it makes no assumptions about reference trajectories, while also taking into account the transverse size of the beam. First results demonstrating microbunching gain in a chicane are presented.

Slides THA1WA03 [1.799 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-FLS2018-THA1WA03

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)