Updates on Magnified imaging with cold neutrons using refractive optics

The modulating sextupole magnetic lens is a powerful device for utilizing the valuable neutrons produced by neutron sources. It can focus neutrons of a wide range of wavelengths in a pulsed neutron beam. Focusing is achieved by modulating the focusing intensity synchronously with the TOF information. Because refractive lenses have no neutron-scattering material in the bore and a straight optical axis, mechanical alignment is easier than with mirror systems, where the angular error of the downstream axis is twice the angular alignment error. The simple focusing principle of refractive lenses is well suited for neutron imaging using neutrons. A series of imaging experiments are currently planned at HUNS, Hokkaido University, and J-Parc MLF. The status of the project will be presented.