Simulation and optimization of the NSLS-II SRX beamline combining ray-tracing and wavefront propagation

2011 ◽  
Author(s):  
Vincent De Andrade ◽  
Juergen Thieme ◽  
Oleg Chubar ◽  
Mourad Idir
Keyword(s):  
Ray Tracing ◽  
Simulation And Optimization ◽  
Wavefront Propagation

scholarly journals Mathematical Models for Simulation and Optimization of High-Flux Solar Furnaces

2019 ◽  
Vol 24 (2) ◽  
pp. 65 ◽  
Author(s):  
José Carlos Garcia Pereira ◽  
Jorge Cruz Fernandes ◽  
Luís Guerra Rosa
Keyword(s):  
Ray Tracing ◽  
Random Distribution ◽  
Geographical Location ◽  
Simulation Models ◽  
Solar Furnace ◽  
High Flux ◽  
High Concentration ◽  
Simulation And Optimization ◽  
Spherical Curvature ◽  
Optical Paths

High-flux solar furnaces distributed throughout the world have been designed and constructed individually, i.e., on a one-by-one basis because there are several possible optical configurations that must take into account the geographical location and the maximum power to be attained. In this work, three ray-tracing models were developed to simulate the optical paths travelled by sun rays in solar furnaces of high concentration using as an example, the solar furnace SF60 of the Plataforma Solar de Almería, in Spain. All these simulation models are supported by mathematical constructions, which are also presented. The first model assumes a random distribution of sun rays coming from a concentrator with spherical curvature. The second model assumes that a random distribution of parallel rays coming from the heliostat is reflected by a concentrator with spherical curvature. Finally, the third model considers that the random parallel rays are reflected by a concentrator with a paraboloid curvature. The three models are all important in optical geometry, although the paraboloid model is more adequate to optimize solar furnaces. The models are illustrated by studying the influence of mirror positioning and shutter attenuation. Additionally, ray-tracing simulations confirmed the possibility to attain homogenous distribution of flux by means of double reflexion using two paraboloid surfaces.

scholarly journals A hybrid method for X-ray optics simulation: combining geometric ray-tracing and wavefront propagation

2014 ◽  
Vol 21 (4) ◽  
pp. 669-678 ◽  
Author(s):  
Xianbo Shi ◽  
Ruben Reininger ◽  
Manuel Sanchez del Rio ◽  
Lahsen Assoufid
Keyword(s):  
Ray Tracing ◽  
Hybrid Method ◽  
One Dimension ◽  
Optical Elements ◽  
X Ray ◽  
Design And Optimization ◽  
Wavefront Propagation ◽  
Spatial Frequencies ◽  
Coherent Beams ◽  
Diffraction Effects

A new method for beamline simulation combining ray-tracing and wavefront propagation is described. The `Hybrid Method' computes diffraction effects when the beam is clipped by an aperture or mirror length and can also simulate the effect of figure errors in the optical elements when diffraction is present. The effect of different spatial frequencies of figure errors on the image is compared withSHADOWresults pointing to the limitations of the latter. The code has been benchmarked against the multi-electron version ofSRWin one dimension to show its validity in the case of fully, partially and non-coherent beams. The results demonstrate that the code is considerably faster than the multi-electron version ofSRWand is therefore a useful tool for beamline design and optimization.

Soft matter interfaces beamline at NSLS-II: geometrical ray-tracing vs. wavefront propagation simulations

2014 ◽  
Author(s):  
Mikhail Zhernenkov ◽  
Niccolo Canestrari ◽  
Oleg Chubar ◽  
Elaine DiMasi
Keyword(s):  
Ray Tracing ◽  
Soft Matter ◽  
Wavefront Propagation

Time-to-depth conversion and velocity estimation by image-wavefront propagation

Geophysics ◽  
2017 ◽  
Vol 82 (6) ◽  
pp. U75-U85 ◽  
Author(s):  
Leandro da S. Sadala Valente ◽  
Henrique B. Santos ◽  
Jessé C. Costa ◽  
Jörg Schleicher
Keyword(s):  
Ray Tracing ◽  
Model Building ◽  
Velocity Model ◽  
Velocity Estimation ◽  
Time Step ◽  
Velocity Anomaly ◽  
Interval Velocity ◽  
Velocity Models ◽  
Wavefront Propagation ◽  
Velocity Model Building

A new strategy for time-to-depth conversion and interval-velocity estimation is based entirely on image-wavefront propagation without the need to follow individual image rays. The procedure has three main features: (1) It computes the velocity field and the traveltime directly, allowing us to dispense with dynamic ray tracing; (2) it requires only the knowledge of the image wavefront at the previous time step; and (3) it inherently smooths the image wavefront, inhibiting the formation of caustics. As a consequence, the method tends to be faster than the usual techniques and does not carry the constraints and limitations inherent to common ray-tracing strategies. Synthetic tests using a Gaussian velocity anomaly as well as the Marmousi velocity model, and two smoothed versions of it show the feasibility of the method. A field-data example demonstrates the use of different numerical procedures. Our results indicate that the present strategy can be used to construct reasonable depth-velocity models that can be used as reliable starting models for velocity-model building in depth migration or for tomographic methods.

Advanced simulations of x-ray beam propagation through CRL transfocators using ray-tracing and wavefront propagation methods

2011 ◽  
Author(s):  
Jana Baltser ◽  
Erik Knudsen ◽  
Anette Vickery ◽  
Oleg Chubar ◽  
Anatoly Snigirev ◽  
...  
Keyword(s):  
Ray Tracing ◽  
Beam Propagation ◽  
X Ray ◽  
Wavefront Propagation ◽  
Propagation Methods
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