Aller au contenu principal
  • Paul Scherrer Institut PSI
  • PSI Research, Labs & User Services

Digital User Office

  • Digital User Office
  • DE
  • EN
  • FR
Paul Scherrer Institut (PSI)
Rechercher
Paul Scherrer Institut (PSI)

Hauptnavigation

  • Research at PSIOuvrir ce point de menu principal
    • Research Initiatives
    • Ethics and Research integrity
    • Scientific Highlights
    • Scientific Events
    • Scientific Career
    • PSI-FELLOW
    • PSI Data Policy
  • Research Divisions and LabsOuvrir ce point de menu principal
    • Overview
    • Research with Neutrons and Muons
    • Photon Science
    • Energy and Environment
    • Nuclear Energy and Safety
    • Biology and Chemistry
    • Scientific Computing, Theory and Data
    • Large Research Facilities
  • Facilities and InstrumentsOuvrir ce point de menu principal
    • Overview
    • Large Research Facilities
    • Facilities
    • PSI Facility Newsletter
  • PSI User ServicesOuvrir ce point de menu principal
    • User Office
    • Methods at the PSI User Facilities
    • Proposals for beam time
    • Proposal Deadlines
    • Data Analysis Service (PSD)
    • EU support programmes
  • New ProjectsOuvrir ce point de menu principal
    • SLS 2.0
    • IMPACT
  • DE
  • EN
  • FR

Digital User Office (mobile)

  • Digital User Office

Vous êtes ici:

  1. PSI Home
  2. Labs & User Services
  3. NUM
  4. LIN
  5. Neutron Optics and Computing
  6. Simulation

Navigation secondaire

Neutron Optics and Computing Group

  • About Group
  • People
  • Publications
  • Instrument Control
    • SICS (Neutron Data Acqu.)
    • MIDAS
  • Instruments
    • BOA
    • NARZISS
  • Sputtering Lab
  • Simulation
  • Cluster
    • Cluster Usage

Info message

Ce contenu n'est pas disponible en français.

Simulations

The Neutron Optics (NOP) group’s activities include a wide range of numerical work, in the form of computer simulations.


A big part of NOP's work includes the use of two Monte-Carlo codes (McStas and MCNP) to perform calculations on a variety of different topics. The ray-tracing code McStas is used for: i) design and optimization of neutron lenses for various instruments and experimental set-ups. ii) Development of components (‘plugins’) for the McStas software itself, such as components for neutron lenses’ simulations, gravity component for neutron guides, etc. iii) Performing virtual experiments to accommodate the designing and operational needs of existing and upcoming experimental set-ups at PSI.

The neutron transport code MCNPX has been extensively used for shielding calculations related to the ESS project, and PSI beamlines and instruments. MCNP has also been used to simulate the behavior of certain materials (sapphire, silicon) as neutron filters. Furthermore, a coupled version of the two software (on whose development NOP has contributed extensively), has been used to perform simulations on the effectiveness of sapphire crystals as fast neutron filters.

An effort to couple SINQ's instrument control system with simulation environments has lead to the development of the Virtual McStas DMC Diffractometer

 


Focusing Neutron Lens Animation: Animation of simulated intensity distribution at increasing distance (0.2-0.6m) from a focusing supermirror lens. The still image above represents the intensity distribution at the focal point, located at 0.4m from the lens's exit. The simulations were performed with the monte carlo ray-tracing software McStas.


Focus-Defocus Neutron Lens System Animation Animation of simulated intensity distribution at increasing distance (0.3-2.0m) from a focus/defocus two-lens system. The still image represents the intensity distribution at 0.3m after the second (defocusing) lens's exit. The simulations were performed with the monte carlo ray-tracing software McStas.


Shielding calculations for the triple axis spectrometer EIGER at SINQ. The simulations were performed with the monte carlo software MCNP.
Shielding calculations for the triple axis spectrometer EIGER at SINQ. The simulations were performed with the monte carlo software MCNP.

Calculations of SINQ's thermal flux distribution. The simulations were performed with the monte carlo software MCNP.
Calculations of SINQ's thermal flux distribution. The simulations were performed with the monte carlo software MCNP.

Simulations of a coupled 2-lens neutron focusing system for the DMC powder diffractometer at SINQ. The image on the left shows a schematic of the DMC instrument components from monochromator to detector. The image on the right shows a zoom-in on the 20lens system. The simulations were performed with the monte carlo ray-tracing software McStas.
Simulations of a coupled 2-lens neutron focusing system for the DMC powder diffractometer at SINQ. The image on the left shows a schematic of the DMC instrument components from monochromator to detector. The image on the right shows a zoom-in on the 20lens system. The simulations were performed with the monte carlo ray-tracing software McStas.

Sidebar

Contact

Neutron Optics & Computing Group
Laboratory for Neutron and Muon Instrumentation
PSI
CH-5232 Villigen PSI
Switzerland


Group Leader
Dr. Uwe Filges
Phone:
+41 56 310 46 06
E-mail: uwe.filges@psi.ch

LIN groups

  • Sample Environment
  • Spallation Sources Operation
  • Neutron Optics & Computing
  • Mechanical & Electrical Engineering

NUM Homepage

PSI Division Research with Neutrons and Muons.

top

Pied de page

Paul Scherrer Institut

Forschungsstrasse 111
5232 Villigen PSI
Suisse

Téléphone: +41 56 310 21 11
Téléfax: +41 56 310 21 99

Comment nous trouver 
Contact

Centre de visiteurs psi forum
Laboratoire élèves iLab (en allemand)
Centre de protonthérapie
Centre de Formation du PSI
PSI Guest House (en anglais)
PSI Gastronomie (en allemand)
psi forum shop

Service & Support

  • Annuaire
  • User Office
  • Accelerator Status
  • Publications du PSI
  • Fournisseurs
  • E-facture
  • Computing (en anglais)
  • Sicherheit (en allemand)

Carrière

  • Travailler au PSI
  • Offres d'emploi
  • Formation initiale et formation continue
  • Career Center
  • Formation professionnelle (en allemand)
  • Centre de Formation du PSI

Pour les médias

  • Le PSI en bref
  • Chiffres et faits
  • Le coin médias
  • Communiqués de presse
  • Réseaux sociaux

Suivez le PSI: Twitter (in English) LinkedIn Youtube Facebook Instagram Issuu RSS

Footer legal

  • Impressum
  • Conditions d'utilisation
  • Login éditeurs