Open AccessA ray‐tracing algorithm for ab initio calculation of thermal load in undulator‐based synchrotron beamlines
Author(s) -
Rebuffi Luca,
Shi Xianbo,
Sanchez del Rio Manuel,
Reininger Ruben
Publication year - 2020
Publication title -
journal of synchrotron radiation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.172
H-Index - 99
ISSN - 1600-5775
DOI - 10.1107/s160057752000778x
Subject(s) - beamline , undulator , optics , synchrotron radiation , ray tracing (physics) , advanced photon source , physics , aperture (computer memory) , synchrotron radiation source , synchrotron , computer science , computational science , radiation , beam (structure) , acoustics
The OASYS suite and its powerful integration features are used to implement a ray‐tracing algorithm to accurately calculate the thermal load in any component of an undulator‐based synchrotron beamline. This is achieved by sampling and converting the SRW source of a given energy into a Shadow source and using the latter code to ray trace the full beamline. The accuracy of the algorithm is proved by reconstructing the full undulator radiation distribution through an aperture and comparing the result with direct calculaton of the total power using SRW . The algorithm is particularly suited to analyze cases with complex beamline layouts and optical elements, such as crystals, multilayers, and compound refractive lenses. Examples of its use to calculate the power load on elements of two of the feature beamlines at the Advanced Photon Source Upgrade Project and a comparison of the results with analytical calculations are presented.