McXtrace - Monte Carlo Xray Tracing, is a joint venture by

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Code repository (shared with 'McStas') is located at

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McXtrace News

The latest McXtrace news.

New ready-to-run McXtrace box in a browser

[18/02/2022] Dear all, we are happy to provide a ready-to-run system with McXtrace pre-installed. It typically pulls-out an 8-cores computer running at Binder, for free, with both McXtrace 1.7 and 3.0 (with MPI multi-core support but no GPU). Perfect for running McXtrace from anywhere, for training/schools/workshops.

Start it in a single click here:

(Please note that load-time can be a couple of minutes.)



The above docker image has been pushed to dockerhub and can also be run locally at your machine using docker:

Updated RPM metapackages for McXtrace 3.0

[09/02/2022] Dear all,

If you were fast enough to try out installing McXtrace 3.0 already yesterday on your CentOS or Fedora system, you may have come across some installation issues, as the mcxtrace-suite-python-ng packages had a couple of shortcomings.

Updated packages have now been uploaded, please use yum clean and yum reinstall to have access to the updates.

McXtrace 3.0 is released

[08/02/2022] Dear all,

The McXtrace team is happy to announce that our McXtrace 3.0 "next generation" release is now available.

McXtrace 3.0 is the first release in the 3.0 series with a completely rewritten code-generator and thereby support for GPU-acceleration through the OpenACC programming model.

We have seen speedups of 1-2 orders of magnitude over the CPU version, depending on the computational Problem / complexity.



For more information on the GPU-features of the release, please consult the CHANGES_McXtrace document on GitHub and the section "Migrating from McStas 2.x to 3.x (and McXtrace 1.x to 3.x)" in our McCode wiki

Happy simulation!

McXtrace 1.7 is released

[25/01/2022] Dear simulators, The team is happy to announce that McXtrace 1.7 is out!

1.7 has been focused mainly on stability and bugfixes, but also provides a set of new features. Binary packages are provided for the main platforms: Debian /Ubuntu, Fedora, Windows 10, Mac OSX (arm and intel based). As is the presenty custom, see for speecific installation instructions for you platform.

Please also keep an eye out for the for upcoming release of McXtrace 3.0, which is a technology preview release of an improved code-generator enabling McXtrace to run on GPUs.

Happy simulation!

CHANGES in McXtrace 1.7

  1. Improved installation scripts
    1. Installs cleanly on Mac silicon
  2. Updated examples:
    1. MAXIV_DanMAX_pxrd1d.instr
    2. MAXIV_DanMAX_pxrd2d.instr
  3. New examples:
    1. SOLEIL ROCK beamline.
    2. ESRF BM29 skeleton beamline.
    3. Example of Air-scattering block.
    4. Test example for the GROUP langnuage feature
    5. Union demo test example
    6. New Example of Compton scattering union process.
  4. Updated Components
    1. PowderN.comp: Fix bug with faulty packing factor logic, which lead to wrong intensities when used with SPLIT.
    2. Lens_parab_Cyl_rough.comp, Lens_parab_rough.comp, Lens_Kinoform.comp: documentation issues
    3. Mirror.comp: documentation update
    4. Mirror_curved.comp, Mirror_elliptic.comp: Use reflectivity library
    5. Mirror_toroid.comp: Fix for stable handling of reflectivity file
    6. Absorption_sample.comp: Fix inner/outer volume logic
    7. Source_genesis13.comp, Source_simplex.comp: Documentation issues.
    8. Air.comp: Correct scattering amplitude.
    9. New: Laue_crystal_BC.comp: experimental model of a Laue crystal available for testing.
  5. Updated libraries:
    1. Reflectivity-lib has a series of bugfixes.
  6. New tools:
    1. Test tool for component writers' convenience.
    2. Scripts for generating reflectivity files.
  7. License change: The release includes a switch to the GPLv3-license for McXtrace. The underlying reason for this is to help collaboration wih the Debian project.

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