Unsupervised Anomaly Detection in ALS EPICS Event Logs

TUPD113
23 Sept 2025, 16:00
1h 30m
Palmer House Hilton Chicago

Palmer House Hilton Chicago

17 East Monroe Street Chicago, IL 60603, United States of America
Poster Presentation MC16: Data Management and Analytics TUPD Posters

Speaker

Thorsten Hellert (Lawrence Berkeley National Laboratory)

Description

This paper introduces an automated fault analysis framework for the Advanced Light Source (ALS) that processes real-time event logs from its EPICS control system. By treating log entries as natural language, we transform them into contextual vector representations using semantic embedding techniques. A sequence-aware neural network, trained on normal operational data, assigns a real-time anomaly score to each event. This method flags deviations from baseline behavior, enabling operators to rapidly identify the critical event sequences that precede complex system failures.

Author

Antonin Sulc (Lawrence Berkeley National Laboratory)

Co-authors

Steven Hunt (Lawrence Berkeley National Laboratory) Thorsten Hellert (Lawrence Berkeley National Laboratory)

Presentation materials

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