Speaker
Description
The JUNO data acquisition system reads data from about 7,000 electronic channels. It collects data from roughly 20,000 20-inch PMTs and 25,000 3-inch PMTs. Implemented on a computing cluster of about 100 nodes, the system uses cluster-parallel DAQ software. It forms a large-scale distributed DAQ. It can perform real-time acquisition and online processing of the central detector at a 1 kHz trigger rate. The total throughput is about 40 GB/s. The system provides horizontal scalability and dynamic load balancing. Peak throughput reaches 60 GB/s. It offers more than 50% redundant processing capacity. It enables online event reconstruction, correlation analysis, and classification/compression of different data streams. It reduces routine disk storage to under 100 MB/s. The system has completed full integration and commissioning of all detectors and electronics. It began long-term stable data acquisition on August 26, 2025.