Smith, W. Alcock, S. Nilsson, J.M.C. JACoW Publishing Geneva, Switzerland 2226-0358 978-3-95450-209-7 10.18429/JACoW-ICALEPCS2019-MOPHA137 English 547-550 MOPHA137 detector EPICS controls timing FPGA Contribution to a conference proceedings 2020 2020-08 https://doi.org/10.18429/JACoW-ICALEPCS2019-MOPHA137 https://jacow.org/icalepcs2019/papers/mopha137.pdf The European Spallation Source (ESS) is a new facility being built in Lund, Sweden, which when finished will be the world’s most powerful neutron source. STFC has an in-kind project with the Detector group at ESS to provide timing and control systems integration for the detector data readout system. This paper describes how time is synchronised and distributed to the readout system from the ESS timing system, and how EPICS is used to implement a controls interface exposing the functionality of detector front ends.