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<p class="MsoNormal"><span lang="EN-US">Dear colleagues,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">the new version 3.7 VITESS software package for the simulation of neutron scattering instruments and virtual neutron experiments has been released and can be downloaded from the VITESS website at FZJ:
<a href="https://iffgit.fz-juelich.de/vitess/vitess/-/releases">https://iffgit.fz-juelich.de/vitess/vitess/-/releases</a>. It is the first version in which all major options of all modules were tested by dedicated tests comparing the parameters of each neutron
with reference data. <o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Version 3.7 contains the following new modules and features:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">- two new source modules for a better connection with target-moderator-reflector simulations
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> - KDSource, which increases the number of neutron trajectories using the kernel density estimator method<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> - Source_AI, which creates a function to define the moderator characteristic using AI
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">- a new module to simulate prisms <o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">- the well-known NCrystal library can be used
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">- the monochromator module allows simulating rotating and oscillating monochromators
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">- the module for inelastic samples can now handle spin dependent scattering<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">- a Python API is available now as an alternative to develop the instrument using the GUI<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">We hope that you will download and use it. Any feedback is welcome; it can be sent to
<a href="mailto:vitess@fz-juelich.de">vitess@fz-juelich.de</a>.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">With kind regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> the VITESS team<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">P.S.: Version 4 is still in the works, but will certainly be released next year.<o:p></o:p></span></p>
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Forschungszentrum Jülich GmbH<br>
52425 Jülich<br>
Sitz der Gesellschaft: Jülich<br>
Eingetragen im Handelsregister des Amtsgerichts Düren Nr. HR B 3498<br>
Vorsitzender des Aufsichtsrats: MinDir Stefan Müller<br>
Geschäftsführung: Prof. Dr. Astrid Lambrecht (Vorsitzende),<br>
Dr. Stephanie Bauer (stellv. Vorsitzende),<br>
Prof. Dr. Ir. Pieter Jansens, Prof. Dr. Laurens Kuipers<br>
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