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    Ansys — ANSYS offers a comprehensive software suite that spans the entire range of physics, providing access to virtually any field of engineering simulation that a design process requires. (from ansys web-page)
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    BornAgain — BornAgain is a software to simulate and fit neutron and x-ray reflectometry and scattering at grazing incidence (GISANS and GISAXS), using distorted-wave Born approximation (DWBA).
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    comsyl — COMSYL makes the coherent mode decomposition of synchrotron radiation emitted by electrons passing through an undulator placed in a storage ring. COMSYL permits naturally the statistical analysis and propagation of the cross spectral density along the beamline optics. The coherence properties of the X-ray beam at any point of the beamline are completely given in terms of the eigenvalues and coherent modes of the cross spectral density (copied from https://github.com/mark-glass/comsyl ).
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    condor Condor, an open-source simulation tool to predict X-ray far-field scattering amplitudes of isolated particles for customized experimental designs and samples, which the user defines by an atomic or a refractive index model. The software enables researchers to test whether their envisaged imaging experiment is feasible, and to optimize critical parameters for reaching the best possible result.
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    elegant — elegant stands for “ELEctron Generation ANd Tracking,” a somewhat out-of-date description of a fully 6D accelerator program that now does much more than generate particle distributions and track them. elegant, written entirely in the C programming language, uses a variant of the MAD input format to describe accelerators, which may be either transport lines, circular machines, or a combination thereof. Program execution is driven by commands in a namelist format.
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    fdmnes — The aim of the FDMNES project is to supply to the community a user friendly code to simulate x-ray spectroscopies, linked to the real absorption (XANES, XMCD) or resonant scattering (RXD) of the synchrotron radiation. This ab initio approach, wants to eliminate all the methodological parameters. First mainly mono-electronic, using the functionnal density theory (DFT), it includes now multi-electronics advances with the use of the time dependant DFT (TD-DFT) for a better taking into account of the excited states linked to the photon-matter interaction. It includes also the Hubbard correction (LDA+U) for a better description of the so called correlated materials.
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    FLUKA — FLUKA is a general purpose tool for calculations of particle transport and interactions with matter, covering an extended range of applications spanning from proton and electron accelerator shielding to target design, calorimetry, activation, dosimetry, detector design, Accelerator Driven Systems, cosmic rays, neutrino physics, radiotherapy etc (copied from: https://flukafiles.web.cern.ch/flukafiles/manual/0.html).
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    genesis — GENESIS 1.3 is a time-dependent three-dimensional FEL code. It is focused to simulate single-pass free-electron lasers, both FEL amplifier and SASE FEL, although the flexible input can be used to easily extend the capacity of GENESIS 1.3 to cover FEL oscillators or multistage setups.
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    hexrd — The HEXRD project is developing a cross-platform, open-source library for the general analysis of X-ray diffraction data. This includes powder diffraction, Laue diffraction, and High Energy Diffraction Microscopy (a.k.a. 3DXRD, multi-grain rotation method) modalities.
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    ImageD11 — ImageD11 is for identifying individual grains in spotty area detector diffraction images. It finds the spots and helps you to try to index them.
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    Impact-Z — Impact-Z is a 3D parallel/serial PIC code based on multi-layer object-oriented design. Impact-Z can treat intense beam propagating through drifts, magnetic quadropols or solenoids, ... using linear map or nonlinear Lorentz integrator.  The installation on Maxwell provides both Impact-Z and Impact-T.
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    lammps — LAMMPS is a classical molecular dynamics code, and an acronym for Large-scale Atomic/Molecular Massively Parallel Simulator.
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    oasys — OASYS (OrAnge SYnchrotron Suite) is a graphical environment for optic simulation software used in synchrotron facilities, based on Orange 3.
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    opal OPAL (Object Oriented Parallel Accelerator Library) is a parallel open source tool for charged-particle optics in linear accelerators and rings, including 3D space charge. 
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    openfoam — OpenFOAM is the leading free, open source software for computational fluid dynamics (CFD), owned by the OpenFOAM Foundation and distributed exclusively under the General Public Licence (GPL). The GPL gives users the freedom to modify and redistribute the software and a guarantee of continued free use, within the terms of the licence.
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    puffin — Puffin (Parallel Unaveraged Fel INtegrator) simulates a Free Electron Laser (FEL). Puffin is a massively parallel numerical solver for an unaveraged, 3D FEL system of equations, and is written in Fortran 90, using MPI and OpenMP.
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    srw — SRW (Synchrotron Radiation Workshop") is a physical optics computer code for calculation of detailed characteristics of Synchrotron Radiation (SR) generated by relativistic electrons in magnetic fields of arbitrary configuration and for simulation of the radiation wavefront propagation through optical systems of beamlines.
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    xmimsim — XMI-MSIM is an open source tool designed for predicting the spectral response of energy-dispersive X-ray fluorescence spectrometers using Monte Carlo simulations. It comes with a fully functional graphical user interface in order to make it as user friendly as possible. Considerable effort has been taken to ensure easy installation on all major platforms.
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    xop — XOP (X-ray Oriented Programs) is a widget-based driver program that is used as a common front-end interface for computer codes of interest to the synchrotron radiation community.
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    xrt — Package xrt (XRayTracer) is a python software library for ray tracing and wave propagation in x-ray regime. It is primarily meant for modeling synchrotron sources, beamlines and beamline elements. Includes a GUI for creating a beamline and interactively viewing it in 3D.