DAQ coupling in RIKEN RIBF

The Radioactive Isotope Beam Factory at RIKEN has been constructed to produce intense RI beams over the whole range of atomic masses. MUST2, EURICA, and MINOS detector systems together with dedicated DAQ systems are transported to RIBF from other facilities of GANIL, GSI and Irfu CEA. These data have to be merged with data of RIBFDAQ. There are two types of DAQ coupling methods. One is the common trigger configuration, and the other is the individual trigger configuration. In case of the common trigger configuration, data taken by different DAQ systems are merged in online through Ethernet. This merging is simple because the event number is the same between DAQ systems. However, run control commands and data formats are translated to adapt other DAQ systems. On the other hand, the time-stamping system is adopted for the individual trigger configuration. This case, DAQ systems run independently, and data are taken attached with time-stamp information. Raw data are converted to ROOT Tree file once. Finally, data are merged offline based on time-stamp information. Here, DAQ coupling projects in RIBF are described.