DAQ software for SND detector

The data acquisition system software for new experiments on the SND detector, its architecture and overview of its distinctive features are presented. Deep buffering of readout events gives an independence of data reading from their processing. Computer farm for events processing and selection is implemented in such a way to allow linear scaling of the computing power. The operator interface is implemented with Web technologies. State machine, process starter, process control and recovery services are designed to control system processes. The system configuration and data taking conditions are stored in the relational (SQL) database. The database access is implemented through object-oriented API designed for this project. Events processing and selection modules are embedded into the highly configurable software framework. Presented DAQ software provides high level of robustness, flexibility and scalability.