| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1824860 | Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment | 2011 | 7 Pages |
Monte Carlo simulation results for the upgrade of the FLEX/V2 cold neutron triple-axis spectrometer are presented. The main goals are increased flux and energy resolution, while keeping a low background. In the same time the energy transfer range is significantly increased, bridging the gap between cold and thermal neutrons. We aim towards a flexible instrument, by employing the virtual source concept defining a beam before a double-focusing monochromator. This enables fine-tuning according to energy resolution, intensity and sample size requirements. A velocity selector adds the extra flexibility of tuning the spectrometer to any desired fixed wavevector. Neutron ray-tracing programs McStas and VITESS were extensively used and tested in this process.
► Monte Carlo simulations of the FLEX triple-axis spectrometer. ► Increased flux and better energy resolution, low background. ► Increased energy transfer range.
