Preliminary evaluation of calibration method on Double Crystal Monochromator and Time-of-Flight Bragg Edge Neutron Transmission analysis

Ancient metallurgy is crucial for understanding the artistic and technological evolution of past civilisations. Neutron-based techniques offer a non-invasive approach to determine alloy and phase composition of ancient artefacts. The work presented here is part of the INFN CHNet_BRONZE project, aiming to quantitatively calibrate neutron techniques for the analysis of Cu-based archaeological items. It focuses on the preliminary wavelength calibration of the measurements carried out with the Bragg-Edge Neutron Transmission (BENT) technique, a non-invasive method that reveals composition, texture and microstructure of materials over large areas of the samples, exploiting 2D imaging detectors.