4.4: Report on the engineering design of BRR low dimensional moderator

The construction of the European Spallation Source ERIC (ESS) is one of Europe’s largest recent research infrastructure investments and the most important advancement in the activity of the neutron scattering community. One of the crucial components and a most innovative development in enhancing the neutron source brightness is the compact cryogenic moderator. Its principle was recently invented by the ESS target team during the design phase of ESS. It has the potential to deliver a revolutionary difference versus an incremental difference in the performance of ESS.

Before being able to be implemented, this very new idea and its technical solutions need complex simulation and experimental verification at various conditions. Without experimental verification at an appropriate existing neutron source, the compact cryogenic moderator represents a significant risk to the ESS project. Given the central nature of the moderator to the neutron source, it is difficult to find opportunities to experimentally verify novel designs.

DOI: https://doi.org/10.17199/BRIGHTNESS.D4.4