Using a Three Axis Spectrometer (TAS) is not easy since one has
constantly translate parameters from real space to reciprocal space and
The goal of vTAS is to provide an interactive and graphical display of both the instrument configuration and the corresponding measured space thus making easier the understanding of the behavior of the instrument and its limits.
vTAS allows experimentation with sample parameters and orientation, instrument parameters, angular limits and location of the surrounding walls.
It supports several popular multiplexed TAS geometries.