Status of ESS and Neutron Imaging Activities at ESS

Markus Strobl (European Spallation Source, Sweden)

While neutron imaging has proven its vast potential for scientific and industrial applications at continuous sources, neutron imaging taking advantage of a pulsed source and hence time-of-flight methods is a new field unlocking yet unexplored methods and fields of applications. Within the last decade various novel imaging modalities have been developed taking advantage of wavelength resolution and in particular of scattering information amenable in addition to conventional real space image resolution. Hence, neutron imaging is not only revealing macroscopic inner structures of different material compositions or densities anymore, but also inhomogeneities of crystalline structure and phase, corresponding structural transitions as well as microscopic structural behavior in space and time and magnetic phenomena. An optimized imaging instrument at the ESS long pulse source will have the unique potential to cover all these areas with highest efficiency and performance by taking advantage not only of the high time averaged flux but also the flexibility provided by the source time structure for a versatile instrument. However, taking advantage of such potential does not only require such instrument, as approved for construction and known as ODIN, but the corresponding development of methodical approaches and scientific cases to take best advantage of such investment. Accordingly a broad development program has been established with a number of experienced partners advancing methods such as Bragg edge and 3D diffraction imaging, polarized time-of-flight imaging and quantitative dark-field SANS imaging. The state-of-the-art in these seminal developments and their promises for future imaging at ESS and ODIN will be discussed together with the status of the ESS facility as a whole.

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