Division 4 SCIENTIFIC SCOPE

ESS will have a unique ability to study a broad range of structures and time scales due to its long, high-intensity neutron pulses. ESS will offer neutron beams of unparalleled brightness, delivering higher beam intensity to the samples than any existing spallation source. The high brightness will enable many investigations to be pursued that are out of range today, by allowing for measurements of smaller samples in more constrained sample environments, the increased use of polarised neutrons, detection of weaker signals and fast kinematic measurements in real time. The bright neutron beams will be delivered in a unique time structure, with long neutron pulses at low frequency. This time structure enables the efficient use of long-wavelength neutrons. Advanced neutron technologies will exploit this structure to allow ESS instruments to achieve wider dynamic range, in particular by the use bi-spectral beams, and resolutions tunable in a very large range as needed, all of which will significantly expand scientific possibilities. State-of-the-art methods for data management and analysis will further enhance capability and capacity.

The spallation source will deliver neutron beams to a suite of research instruments. Building on the Science Case established in 2002 and identifying science drivers for the ESS a reference instrument suite is presented in the TDR.