Simulation project tripleaxis: A triple-axis spectrometer

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RITA-2 is a triple-axis spectrometer situated at PSI, Switzerland. RITA-2 is placed at the cold source and is optimized for medium energy resolution and high \(q\) resolution.

In this assignment, you will use McStas to construct a model of RITA-2 and perform a virtual inelastic phonon experiment. You will then use the state-of-the-art analysis package MFIT to analyze the data and determine the phonon dispersion relation. You will also be asked to study the energy and (optionally) the \(q\) resolution of the spectrometer.

Question 1 - The source-guide system

Question 2 - A focusing monochromator

Question 3 - Tuning the RITA-2 monochromator

Question 4 - Collimator

Question 5 - Filter

Question 6 - Analyzer and detector

Question 7 - Energy resolution

Question 8 - Phonon sample

Question 9 - A full virtual experiment

Optional Question 10 - Determine the full phonon dispersion of the sample

Optional Question 11 - The resolution function