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Updated: Apr 11, 2026

High-Resolution Neutron Spectroscopy to Study Picosecond-Nanosecond Dynamics of Proteins and Hydration Water
Published on: April 28, 2022
Vitess 3.8: a modernized framework for Monte Carlo neutron tracing simulations
José Ignacio Robledo1,2, Nicoló Violini1, Fabian Beule1
1Jülich Centre for Neutron Science, Forschungszentrum Jülich GmbH, Wilhelm-Johnen Strasse, 52425Jülich, Germany.
None:
VITESS is a modular Monte Carlo simulation package for modeling and optimizing neutron scattering instruments through ray tracing of neutrons. The latest release, VITESS 3.8, introduces major advances in functionality and software infrastructure. They include new source modules for integrating external moderator simulations and artificial-intelligence-based flux modeling, as well as prism for beam deflection and crystalline material simulations via NCrystal. Existing modules have been extended to support spin-dependent scattering, advanced monochromator motions and improved polarization handling. The update also includes a Git-based continuous integration system ensuring reproducibility.
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