The IN5@ILL TOF spectrometer from cold source to final detector, with sample.
The detector model includes Fe housing and tube cross talk absorbing masks
with angle restriction (neutrons that scatter in Fe in front of a tube and
enter a different tube are absorbed).
Parameters in boldface are required;
the others are optional.
mean incident wavelength
wavelength half width. Use e.g. 0.8*lambda for white beam.