This project facilitates the modelling and analysis of GISANS (Grazing Incidence Small Angle Neutron Scattering) samples after the McStas simulation of an instrument up until the sample position. It provides scripts and utilities to simulate neutron scattering experiments and interpret the results. The main technologies and frameworks used include McStas and BornAgain for simulations, with MCPL facilitating the interchange of particles between them, Python for data processing and visualisation, with Conda for setting up the environment.

The simulation of a neutron scattering instrument up until the sample is carried out using a McStas model of the instrument, that ends in an MCPL_output component to export neutrons in an MCPL file. This MCPL file is then used as a source of neutrons for the subsequent GISANS simulation of a sample model using BornAgain through a Python script. The result of this simulation is a Qx,Qy,Qz histogram (and corresponding uncertainty) in an NPZ file that can be processed with a plotting script.

Detailed documentation of installation and usage can be found at: https://docs.google.com/document/d/1F2jcDX6HxPHbGj8gAOs3vDfk9sReR1T5VZ3dW_6vVhM/edit?usp=sharing