  An effort is underway to develop streaming readout data acquisition system
for the CLAS12 detector in Jefferson Lab's experimental Hall-B. Successful beam
tests were performed in the spring and summer of 2020 using a 10GeV electron
beam from Jefferson Lab's CEBAF accelerator. The prototype system combined
elements of the TriDAS and CODA data acquisition systems with the JANA2
analysis/reconstruction framework. This successfully merged components that
included an FPGA stream source, a distributed hit processing system, and
software plugins that allowed offline analysis written in C++ to be used for
online event filtering. Details of the system design and performance are
presented.
