A compact TOF-SANS using focusing lens and very cold neutrons

► Rot-PMSx, a focusing lens, has the ability to focus pulsed white neutrons with chromatic aberration suppressed. ► A wide range of wavelengths in time of flight mode widens the dynamic q-range. ► The combination between focusing lens and very low energy neutrons (VCN) in SANS experiments lends itself to both high-resolution measurements despite compact instrument size (∼5 m). ► To utilize VCN, relatively long wavelength neutrons, is a novel approach to high resolution SANS.