McStas is based on a compiler that reads a high-level specification language defining the instrument to be simulated and produces C code that performs the Monte Carlo Simulation. The system is very fast in use, both when setting up the instrument definition and when doing calculations. Typical figures are 500000 neutron histories per second on a fast PC.
McStas supports triple-axis, time-of-flight instruments, and polarised neutrons. It comes with a comprehensive manual and a library of well-tested components that include most standard elements of neutron scattering instruments, including steady-state and pulsed sources, monochromators/analysers, guides, collimators, vanadium and powder samples, velocity selectors and choppers, and a variety of detectors.
McStas has been found to run on all existing computer systems (Unix/Linux, Windows, MacOS). Please refer to the platform requirements and tests page.
http://www.mcstas.org
