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

Shi, Xianbo; Reininger, R.; Río, Manuel Sánchez del; Assoufid, Lahsen

doi:10.1107/s160057751400650x

Cited by 63 publications

(44 citation statements)

References 69 publications

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“…For these cases, an intelligent combination of geometric and physical optics gives reasonable results. This method has been proposed (Shi et al, 2014a) and implemented in SHADOW (Shi et al, 2014c). Results of simulations for the mentioned case with the SHADOW hybrid method are given in Fig.…”

Section: Hybrid (Ray-tracing and Physical-optics) Calculationsmentioning

confidence: 99%

DABAM: an open-source database of X-ray mirrors metrology

Río

Bianchi

Cocco

et al. 2016

J Synchrotron Radiat

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An open-source database containing metrology data for X-ray mirrors is presented. It makes available metrology data (mirror heights and slopes profiles) that can be used with simulation tools for calculating the effects of optical surface errors in the performances of an optical instrument, such as a synchrotron beamline. A typical case is the degradation of the intensity profile at the focal position in a beamline due to mirror surface errors. This database for metrology (DABAM) aims to provide to the users of simulation tools the data of real mirrors. The data included in the database are described in this paper, with details of how the mirror parameters are stored. An accompanying software is provided to allow simple access and processing of these data, calculate the most usual statistical parameters, and also include the option of creating input files for most used simulation codes. Some optics simulations are presented and discussed to illustrate the real use of the profiles from the database.

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Section: Hybrid (Ray-tracing and Physical-optics) Calculationsmentioning

confidence: 99%

DABAM: an open-source database of X-ray mirrors metrology

Río

Bianchi

Cocco

et al. 2016

J Synchrotron Radiat

Self Cite

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“…The so-called 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 (Shi et al, 2014). This method has been implemented into ShadowOui as a dedicated widget, redesigning the user interface with a high level of automation.…”

Section: Hybrid Methodsmentioning

confidence: 99%

“…There are, however, many efforts to approach partial coherence from fully coherence methods, like the multi-electron calculations of SRW. On the other hand, the Hybrid method (Shi et al, 2014) corrects the ray-tracing results of SHADOW with effects due to coherence diffraction and propagation. To illustrate how simulations with incoherent optics are important one can think that, even for the EBS, the coherent fraction or undulator light emitted at about 20 keV is around 1%, thus 99% of the emitted photons can be considered incoherent.…”

Section: Introductionmentioning

confidence: 99%

ShadowOui: a new visual environment for X-ray optics and synchrotron beamline simulations

Rebuffi

Río

2016

J Synchrotron Rad

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A new computer environment to perform simulations on synchrotron experiments has been designed. It performs ray-tracing simulations using the popular ray-tracing code SHADOW. With this new application one can define, in a very easy and elegant way, one or several optical systems (beamlines) and perform calculations of the propagation of the X-ray beam through it. Many complementary tools and supplementary calculations improve and extend the functionality of SHADOW to deal with complex optical system optimization, including compound optical elements, iterative calculations, some sample simulations, and implementing corrections for wave optics via a hybrid model.

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“…In this method a linear relation between the beam spatial coordinates in the OE and in the auxiliary plane is assumed. A similar and more sophisticated method uses ray tracing to obtain the phase shifts and has been described in [17]. It is also shown in [17] that the relation between the OE coordinates and the auxiliary plane coordinates can be nonlinear.…”

Section: Slope Erros Theorymentioning

confidence: 99%

Propagation of coherent light pulses with PHASE

et al. 2014

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The current status of the software package PHASE for the propagation of coherent light pulses along a synchrotron radiation beamline is presented. PHASE is based on an asymptotic expansion of the Fresnel-Kirchhoff integral (stationary phase approximation) which is usually truncated at the 2 nd order. The limits of this approximation as well as possible extensions to higher orders are discussed. The accuracy is benchmarked against a direct integration of the Fresnel-Kirchhoff integral. Long range slope errors of optical elements can be included by means of 8 th order polynomials in the optical element coordinates w and l. Only recently, a method for the description of short range slope errors has been implemented. The accuracy of this method is evaluated and examples for realistic slope errors are given. PHASE can be run either from a built-in graphical user interface or from any script language. The latter method provides substantial flexibility. Optical elements including apertures can be combined. Complete wave packages can be propagated, as well. Fourier propagators are included in the package, thus, the user may choose between a variety of propagators. Several means to speed up the computation time were tested -among them are the parallelization in a multi core environment and the parallelization on a cluster.

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

Cited by 63 publications

References 69 publications

DABAM: an open-source database of X-ray mirrors metrology

DABAM: an open-source database of X-ray mirrors metrology

ShadowOui: a new visual environment for X-ray optics and synchrotron beamline simulations

Propagation of coherent light pulses with PHASE

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