Simulated scattering from a hollow-cylinder vanadium sample.
|The plot shows the intensity of scattered neutrons (red is
highest intensity). The sample is at the center of the sphere with the
neutron beam coming from the left. Clearly seen is the shadowing effect
of the sample causing a lower intensity opposite the beam. Also seen is
the effect of the non-symmetric geometry of the sample, causing lower intensity
directly above and to the side of the sample.|
Since the problem seems to occur consistently on updated Mojave (10.14) and Catalina (10.15) systems, a patched version of our macOS App bundle has been uploaded to our download page.
Please let us know via the mailinglist or by creating a GitHub ticket if any further issues arise.
Did you ever wonder how the number of included components and instrument files in McStas changed over time? - And did you know that we now include 215 components and 192 example instruments?
The figure below is generated from release-metadata extracted from http://download.mcstas.org, where all McStas releases can be found.
With the latest update to Xcode command line tools on macOS, there is no longer an option to install the system header files to the legacy location of /usr/include .
This unfortunately means that the miniconda-based gcc that we distribute with McStas (and set up by default) is no longer able to locate the math.h header file and compilations fail with
mccode-r.h:39:18: fatal error: math.h: No such file or directory
Our suggested workaround is to configure your McStas installation to instead use the system-provided clang compiler, see our GitHub issue #799 for a detailed description of how to do this.
The workshop Innovative Simulation Tools, Shielding and Instrumentation 2019 (ISTSI2019) will be held at Holiday Inn St. Petersburg, Russia, on Saturday June 29th 2019, as a satellite of the ECNS conference.
The workshop brings together the partners of the SINE2020 WP8 that have contributed work in the areas of
For more information and registration, please consult the website at http://ecns2019.essworkshop.org
This workshop / project has received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement No 654000.
In collaboration with the China Spallation Neutron Source, the McStas team participated in the first ever McStas school in China in the last week of March.
All lecture material and exercises are available through our new McStas school site, hosted on GitHub
Further, our hosts suggested we recorded videos of the lectures which are slowly becoming available on the new McStas youtube channel.
The results from the 2018 McStas user survey are now online at http://survey2018.mcstas.org.
The main conclusions are that
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