Integrated monitoring and predictive maintenance system for the RENE experiment

Abstract The scientific objective of the Reactor Experiment for Neutrino and Exotics (RENE) is to investigate sterile neutrino oscillations, particularly within the m₄₁^2 2 eV2 region, through precision measurements of antineutrinos emitted by the Hanbit nuclear power plant in Yeonggwang, Korea. To support stable, long-term data acquisition for this experiment, an integrated monitoring system was developed. This system was designed for real-time monitoring of key physical parameters, including photomultiplier tube high voltage, temperature, liquid scintillator level, ambient magnetic field, radon concentration, laboratory temperature, humidity, volatile organic compounds, and thermal anomalies. Because the experiment is performed in a limited and restricted underground space called the tendon gallery, unlike existing conventional commercial-based systems, a key feature of the RENE monitoring system is its asynchronous multi-threaded architecture based on an open-source framework and the producer-consumer design pattern. In particular, this architecture completely decouples hardware communication and database operations from the main graphical user interface thread. Consequently, the responsiveness of the user interface is ensured, and overall system stability is maximized, even during the processing of large data volumes or in case of emergency. The reliability and robustness of the RENE monitoring system have been demonstrated through successful long-term operation. In this paper, the design philosophy, hardware configuration, software architecture, implementation of key features, performance evaluation, and future development plans of the RENE monitoring system are described in detail.