Parallel computation of Inverse Compton Scattering radiation spectra based on Liénard-Wiechert potentials

Inverse Compton Scattering (ICS) has gained much attention recently because of its promise for the development of table-top-size X-ray light sources. Precise and fast simulation is an indispensable tool for predicting the radiation property of a given machine design and to optimize its parameters. Instead of the conventional approach to compute radiation spectra which directly evaluates the discretized Fourier integral of the Liénard-Wiechert field given analytically (referred to as the frequency-domain method), this article focuses on an approach where the field is recorded along the observer time on a uniform time grid which is then used to compute the radiation spectra after completion of the simulation, referred to as the time-domain method. Besides the derivation and implementation details of the proposed method, we analyze possible parallelization schemes and compare the parallel performance of the proposed time-domain method with the frequency-domain method. We will characterize scenarios/conditions under which one method is expected to outperform the other.

Subjects

Inverse Compton Scattering

Liénard-Wiechert field

Radiation spectra

DDC Class

510: Mathematik

Funding(s)

DASHH Helmholtz Graduiertenkolleg

Publication version

publishedVersion

Lizenz

https://creativecommons.org/licenses/by-nc-nd/4.0/

Name

1-s2.0-S0021999122007872-main.pdf

Size

1.18 MB

Format

Adobe PDF

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Parallel computation of Inverse Compton Scattering radiation spectra based on Liénard-Wiechert potentials