The diffuse scattering spectrometer D7 is a general purpose neutron polarisation analysis spectrometer, designed to study nuclear/magnetic short range ordered materials and magnetic defect structures.

• Magnetic short range order in frustrated magnets and spin-glasses
• Studies of non-collinear ferromagnetism
• Extended magnetic defects in antiferromagnetic materials
• Studies of hydrogen diffusion in metals
• Separation of collective and single particle excitations

The addition of a neutron Fermi chopper, transforms D7 into a time-focusing time-of-flight spectrometer with polarisation analysis. The current set-up allows polarisation analysis with an incident energy of E_i 3 meV. An evacuated flight-chamber, between the sample and analysers, will shortly be implemented enabling us to separate magnetic from nuclear excitations with an incident energy of E_i 9 meV.