Recent updates in the “Synchrotron Radiation Workshop” code, on-going developments, simulation activities, and plans for the future

Chubar, Oleg

doi:10.1117/12.2062100

Cited by 10 publications

(2 citation statements)

References 32 publications

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“…4 Different approaches with increasing level of complexity can be adopted to this aim, from simple analytical estimations to ray tracing simulations, up to more modern and more advanced codes based on wave optics and coherent mode decomposition. 5 This has led to a number of well-known and established codes such as Synchrotron Radiation Workshop (SRW ), 6 SPECTRA, 7 X-Ray Tracer (XRT), 8 SHADOW3 , 9 COherent Modes for SYnchrotron Light (COMSYL). 10 Notwithstanding the availability of accurate codes, the numerical description of partially coherent X-ray beams still poses serious challenges in terms of computational resources and simulation times.…”

Section: Introductionmentioning

confidence: 99%

FOCUS: current status and future perspectives

Siano,

Geloni,

Paroli

et al. 2023

Advances in Computational Methods for X-Ray Optics VI

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FOCUS (Fast Monte CarlO approach to Coherence of Undulator Sources) is a new GPU-based code to compute the transverse coherence of x-ray radiation from undulator sources. It combines analytic descriptions of the emitted electric fields with massively parallel computation on GPUs, thereby reducing computation times by up to five orders of magnitude with respect to standard codes. Here we report on recent developments of FOCUS, including new functionalities and some performance optimizations. We also show results for current third-generation facilities and more modern, low-emittance x-ray sources close to the diffraction limit. Finally, we discuss future upgrades and highlight possible perspectives.

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Section: Introductionmentioning

confidence: 99%

FOCUS: current status and future perspectives

Siano,

Geloni,

Paroli

et al. 2023

Advances in Computational Methods for X-Ray Optics VI

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show abstract

“…Sánchez et al extended the traditional ray tracing models into a hybrid raytracing wave-optics approach in SHADOW3, which can deal with the partial coherence by changing the phase correlation of the source [10][11][12]. Chubar et al presented Synchrotron Radiation Workshop (SRW) model [13,14] to simulate partially coherent wavefront propagation from a finite emittance electron beam. SRW calculated the spontaneous emission of electrons through undulators using the retarded potential [15], simulated the wavefront propagation based on Fresnel-Kirchoff equation.…”

Section: Introductionmentioning

confidence: 99%

Numerical analysis of partially coherent radiation at soft x-ray beamline

Meng

Xue

et al. 2015

Opt. Express

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A new model for numerical analysis of partially coherent x-ray at synchrotron beamlines is presented. The model is based on statistical optics. Four-dimensional coherence function, Mutual Optical Intensity (MOI), is applied to describe the wavefront of the partially coherent light. The propagation of MOI through optical elements in the beamline is deduced with numerical calculation. The coherence of x-ray through beamlines can be acquired. We applied the model to analyze the coherence in the STXM beamline at SSRF, and got the coherence length of the beam at the endstation. To verify the theoretical results, the diffraction experiment of a single slit was performed and the diffraction pattern was simulated to get the coherence length, (31 ± 3.0) µm × (25 ± 2.1) µm (H × V), which had a good agreement with the theoretical results, (30.7 ± 0.6) µm × (31 ± 5.3) µm (H × V). The model is applicable to analyze the coherence in synchrotron beamlines.

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Mutual optical intensity propagation through non-ideal mirrors

Meng

Shi

Wang

et al. 2017

J Synchrotron Radiat

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The mutual optical intensity (MOI) model is extended to include the propagation of partially coherent radiation through non-ideal mirrors. The propagation of the MOI from the incident to the exit plane of the mirror is realised by local ray tracing. The effects of figure errors can be expressed as phase shifts obtained by either the phase projection approach or the direct path length method. Using the MOI model, the effects of figure errors are studied for diffraction-limited cases using elliptical cylinder mirrors. Figure errors with low spatial frequencies can vary the intensity distribution, redistribute the local coherence function and distort the wavefront, but have no effect on the global degree of coherence. The MOI model is benchmarked against HYBRID and the multi-electron Synchrotron Radiation Workshop (SRW) code. The results show that the MOI model gives accurate results under different coherence conditions of the beam. Other than intensity profiles, the MOI model can also provide the wavefront and the local coherence function at any location along the beamline. The capability of tuning the trade-off between accuracy and efficiency makes the MOI model an ideal tool for beamline design and optimization.

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Recent updates in the “Synchrotron Radiation Workshop” code, on-going developments, simulation activities, and plans for the future

Cited by 10 publications

References 32 publications

FOCUS: current status and future perspectives

FOCUS: current status and future perspectives

Numerical analysis of partially coherent radiation at soft x-ray beamline

Mutual optical intensity propagation through non-ideal mirrors

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