Robust Errant Beam Prognostics with Conditional Modeling for Particle Accelerators

Particle accelerators are complex and comprise thousands of components, with many pieces of equipment running at their peak power. Consequently, particle accelerators can fault and abort operations for numerous reasons. These faults impact the availability of particle accelerators during scheduled r...

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Bibliographic Details
Published in:arXiv.org 2024-02
Main Authors: Rajput, Kishansingh, Schram, Malachi, Blokland, Willem, Alanazi, Yasir, Ramuhalli, Pradeep, Zhukov, Alexander, Peters, Charles, Vilalta, Ricardo
Format: Article
Language:English
Subjects:
Anomalies
Availability
Configurations
Fault detection
Machine learning
Neural networks
Particle accelerators
Preempting
Quarks
Semi-supervised learning
Spallation
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Summary:Particle accelerators are complex and comprise thousands of components, with many pieces of equipment running at their peak power. Consequently, particle accelerators can fault and abort operations for numerous reasons. These faults impact the availability of particle accelerators during scheduled run-time and hamper the efficiency and the overall science output. To avoid these faults, we apply anomaly detection techniques to predict any unusual behavior and perform preemptive actions to improve the total availability of particle accelerators. Semi-supervised Machine Learning (ML) based anomaly detection approaches such as autoencoders and variational autoencoders are often used for such tasks. However, supervised ML techniques such as Siamese Neural Network (SNN) models can outperform unsupervised or semi-supervised approaches for anomaly detection by leveraging the label information. One of the challenges specific to anomaly detection for particle accelerators is the data's variability due to system configuration changes. To address this challenge, we employ Conditional Siamese Neural Network (CSNN) models and Conditional Variational Auto Encoder (CVAE) models to predict errant beam pulses at the Spallation Neutron Source (SNS) under different system configuration conditions and compare their performance. We demonstrate that CSNN outperforms CVAE in our application.
ISSN:2331-8422