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The Computing for Science (CS) group supports ILL scientists, students and visitors in a number of activities including data analysis, instrument simulation and sample simulation.

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All Software


Simulator of a TAS instrument with Spin Echo option

vTASSE was developed as a teaching tool for scientist using inelastic neutron scattering combined with spin echo analysis. It is based on the mathematics used within the instrument software TASMAD at the Institut Laue-Langevin.
vTASSE displays the scattering plane and the Q,ki,kf triangle, draws the corresponding spectrometer configuration and computes the resolution function of the instrument. Simulated scans are performed and the resulting simulated spectra are plotted for typical dispersion curves.

Despite of its limitations and design flaws, we think vTASSE is a valuable teaching tool and thus we recompiled it for Mac OS X.

Warning: no effort as been made to correct neither display problems resulting from this port nor bugs already present in the original version.


A Mac OS X version of vTASSE can be downloaded from HERE (244 kb). Use it at your own risks !

The drawing problem of the bottom-left histogram is a known bug and we will addressed soon.

Copyright 1995-2007, Institut Laue-Langevin

Created: 5 Dec. 2007 ; Last update: A.Filhol, 3 Oct. 2008.

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