Design of the new residual stress diffractometer at CARR

Neutron diffraction technique is the only nondestructive method to map 3-D residual stress field in bulk component, which can help to improve the manufacturing quality of engineering components and to optimise design criteria in applications. Because of its great potential in industrial application, a new residual stress diffractometer at CARR is being built by CIAE and CNU. Its overall optics was designed and optimised by simulation using McStas and SIMRES software. It will be equipped with double focusing Si(400) monochromator, heavy weighted sample stage, large area Detector and two-layer wedges that open the shielding, which will make this instrument to be one of the best neutron stress diffractometers in the world. Also this diffractometer will be qualified with the function of texture measurement.