This workshop will cover a wide range of topics related to test beams for detector studies in tracking detectors, calorimetry and beyond. It aims at bringing together both experts and newcomers from various fields. There will be a combination of presentations by experienced users, results from recent test beam studies and tutorials to teach the software required to analyse the results. Please have a look at the last two events to get a more detailed impression of the workshop's content: BTTB4 in Orsay in 2015 or BTTB3 in Hamburg in 2014.