Gem - General Materials Diffractometer at Isis

GEM, the General Materials Diffractometer, will replace LAD on beamline S7 at ISIS, the UK pulsed neutron source. GEM has been designed to be both a good-resolution, high-flux powder diffractometer for crystalline samples, and a wide-angular-range, high-flux, low-background instrument for disordered materials studies. The combination of high count-rate and good resolution will advance areas such as time-resolved and small sample diffraction. Further, we anticipate the use of increasingly complex sample environment and the exploitation of the high flux of longer wavelength neutrons from the cold methane moderator particularly for magnetic powder diffraction.