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

Area of Science:

• Synchrotron radiation science
• Computational physics
• Optical engineering

Background:

• Undulator-based synchrotron beamlines generate intense radiation.
• Accurate thermal load calculations are crucial for component integrity and beamline performance.
• Complex beamline designs pose challenges for traditional thermal load analysis.

Purpose of the Study:

• To develop and validate a ray-tracing algorithm for precise thermal load calculation in undulator-based synchrotron beamlines.
• To demonstrate the algorithm's capability in handling complex beamline configurations and various optical elements.
• To provide a tool for optimizing beamline design and ensuring component longevity.

Main Methods:

• Implementation of a ray-tracing algorithm using the OASYS suite.
• Conversion of Synchrotron Radiation Workshop (SRW) source data to Shadow source format.
• Ray tracing of the complete beamline using the Shadow code.
• Validation through reconstruction of undulator radiation distribution and comparison with SRW direct calculations.

Main Results:

• The developed algorithm accurately calculates thermal load on beamline components.
• The method was successfully applied to complex beamline layouts, including crystals, multilayers, and compound refractive lenses.
• Demonstrated accuracy by comparing results with direct calculations using SRW and analytical methods for Advanced Photon Source Upgrade Project beamlines.

Conclusions:

• The integrated ray-tracing algorithm provides an accurate and versatile tool for thermal load analysis in synchrotron beamlines.
• This method is particularly effective for complex beamline designs and various optical elements.
• The validated algorithm aids in the design and optimization of next-generation synchrotron facilities.