AIDA-CALICE DAQ interface

The purpose of this document is to provide a description of the DAQ interface between a master device and several low-duty-cycle detectors. This master device provides the synchronisation between the detectors. The document concentrates on the hardware interface. For the software interface an interface to a EUDAQ run control and the corresponding finite state machine and an interface to an event builder as well as an interface to a data quality monitoring framework like DQM4HEP is assumed. Only the protocol for the interface is described, the implementation of the master device in hardware can be based on several existing or planned devices like the CCC developed for CALICE, the GDCC developed for the CALICE SiECAL or the AIDA-2020 (mini-)TLU. In the following, the term “master CCC” will be used for this central master device.