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Virtual Experiments for Neutron Education

Explore virtual experiments in neutron physics with theoretical teachings, data analysis practice, and instrument simulations. Join the practical training course designed by Kim Lefmann at the University of Copenhagen.

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Virtual Experiments for Neutron Education

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  1. Virtual experiments for teaching and training Kim Lefmann MCNSI, ILL, 26/5-05

  2. New university neutron course • University of Copenhagen, 4th year physics • 10 hours per week, 8 weeks • Lecturers: Kim Lefmann, Peter Willendrup, Bente Lebech, Kell Mortensen • 4 reports, no exam • Theory (Squires) and simple calculation problems • Data analysis (Fullprof, Mfit, “SANS”) • Instrument simulations (DMC, “RITA-2”, SANS-2) • Plus 6 full days experiments at PSI (same instruments)

  3. Course plan • 1: Intro (neutrons + McStas), materials, Squires ch. 1 • 2-3: Scattering theory, (powder) diffraction, FULLPROF, DMC Project (crystal structure), Squires ch. 2-3 (elastic) • 4-5: Inelastic scattering, phonons, MFIT, RITA-2 project (phonons), Squires ch. 2-3 (inelastic) • 6-7: SANS, “SANS-software”, SANS-2 project, Notes • 8: Magnetic scattering, Squires ch. 7-8 • “9”: PSI experiments, comparing with simulations

  4. Project 1, DMC • PSI cold source • Straight guide • Flat monochromator • Collimator • Powder sample • Banana detector • (+ diagnostic monitors) • Data analysis

  5. Project 2, RITA-2 • PSI cold source • Straight guide • Curved monochromator • Collimator • Vanadium / phonon sample • Single analyzer blade • Single detector • (+ diagnostic monitors) • Data analysis in MFIT

  6. Project 3, SANS-2 • PSI cold source • Straight guide • Velocity selector • Pinhole collimation • SANS sample • + program own sample • PSD detector • (+ diagnostic monitors) • Data analysis in “SANS software”

  7. Conclusion • Students seem to like the approach • Good “hands-on” experience to instrumentation • Good test of the user interface! • Helps us focus to get virtual experiments tested!

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