On October 5/6, 2017, DESY hosted the first DESY Test Beam User Workshop [1]
which took place in Hamburg. Fifty participants from different user
communities, ranging from LHC (ALICE, ATLAS, CMS, LHCb) to FAIR (CBM, PANDA),
DUNE, Belle-II, future linear colliders (ILC, CLIC) and generic detector R&D
presented their experiences with the DESY II Test Beam Facility, their concrete
plans for the upcoming years and a first estimate of their needs for beam time
in the long-term future beyond 2025. A special focus was also on additional
improvements to the facility beyond its current capabilities