The League of advanced European Neutron Sources (LENS) has the not-for-profit purpose of promoting the cooperation and projects between European-level neutron infrastructure providers that offer a transnational user programme. The individual members remain independent but together through LENS join forces to support and strengthen European neutron science by creating an effective, collaborating eco-system of neutron facilities.

LENS places emphasis on the relationship between user communities and funding organisations, continuous improvement of source facilities, optimising resources between and aligning policies among partners – all to ensure excellence to the communities they serve.