McStas logo McStas - A neutron ray-trace simulation package ILL; PSI; ESS Niels Bohr Institute DTU Physics NEXMAP


About McStas
 Conditions of use
 Project funding

 Other Downloads (share)

Mailing list

Search web/mailinglist

 Wiki (GitHub)
 McStas manual


Report bugs (GitHub)

Code-repository (GitHub)

McStas: Test_Lens Instrument at Tests_optics

[ Identification | Description | Input parameters | Output parameters | Links ]

The Test_Lens Instrument

Demonstrate focusing effect of refractive lenses


  • Site: Tests_optics
  • Author: E. Farhi/C. Monzat
  • Origin: ILL
  • Date: Dec 2009.
  • Version:(Unknown)


Very simple setup with 30 stacked lenses which focus a cold neutron,
non diverging beam (ideal case). A set of PSD monitors is positioned
around the focusing point to show the beam spot.

Input parameters

Parameters in boldface are required; the others are optional.
Name Unit Description Default
lambda Angs Source wavelength 10
position_PSD m Distance from last lens to first monitor 8.2


[ Identification | Description | Input parameters | Output parameters | Links ]

Generated automatically by McDoc, Peter Willendrup <> / Wed Jan 12 15:13:21 2022

Last Modified: Wednesday, 12-Jan-2022 16:13:21 CET
Search website mailinglist archive GitHub repos