A ray-tracing algorithm for ab-initio calculation of thermal load in undulator-based synchrotron beamlines

Journal Article · 13 July 2020 · Journal of Synchrotron Radiation (Online)

DOI: https://doi.org/10.1107/s160057752000778x · OSTI ID:1638350

Rebuffi, Luca  ^[1]; Shi, Xianbo  ^[1]; Sanchez del Rio, Manuel ^[2]; Reininger, Ruben  ^[1]

---

1. Argonne National Lab. (ANL), Lemont, IL (United States)
2. European Synchrotron Radiation Facility (ESRF), Grenoble (France)

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.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Basic Energy Sciences (BES)
• Grant/Contract Number: AC02-06CH11357
• OSTI ID: 1638350
• Journal Information: Journal of Synchrotron Radiation (Online), Journal Name: Journal of Synchrotron Radiation (Online) Journal Issue: 5 Vol. 27; ISSN 1600-5775
• Publisher: International Union of CrystallographyCopyright Statement
• Country of Publication: United States
• Language: English