Simulation of waviness in neutron guides

Ursula Bengaard Hansen, Mads Bertelsen, Erik Bergbäck Knudsen, Kim Lefmann

Research output: Contribution to journalJournal articleResearchpeer-review


As the trend of neutron guide designs points towards longer and more complex guides, imperfections such as waviness becomes increasingly important. Simulations of guide waviness has so far been limited by a lack of reasonable waviness models. We here present a stochastic description of waviness and its implementation in the McStas simulation package. The effect of this new implementation is compared to the guide simulations without waviness and the simple, yet unphysical, waviness model implemented in McStas 1.12c and 2.0.
Original languageEnglish
JournalJournal of Neutron Research
Issue number2-3
Pages (from-to)45-59
Number of pages15
Publication statusPublished - 2015


  • Monte Carlo simulations
  • Neutron guides
  • Super mirror
  • Waviness

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