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Autoencoder-based time series anomaly detection for ATLAS Liquid Argon calorimeter data quality monitoring

by Vilius Cepaitis, Steven Schramm

Submission summary

Authors (as registered SciPost users): Vilius Cepaitis
Submission information
Preprint Link: scipost_202509_00060v1  (pdf)
Date submitted: Sept. 30, 2025, 11:07 a.m.
Submitted by: Vilius Cepaitis
Submitted to: SciPost Physics Proceedings
Proceedings issue: The 2nd European AI for Fundamental Physics Conference (EuCAIFCon2025)
Ontological classification
Academic field: Physics
Specialties:
  • High-Energy Physics - Experiment
Approach: Experimental

Abstract

The ATLAS experiment at the LHC employs comprehensive data quality monitoring procedures to ensure high-quality physics data. This contribution presents a long short-term memory autoencoder-based algorithm for detecting anomalies in ATLAS Liquid Argon calorimeter data, represented as multidimensional time series of statistical moments of energy cluster properties. Trained on good-quality data, the model identifies anomalous intervals. Validation is performed using a known short-term issue of noise bursts, and the potential for broader application to transient calorimeter issues is discussed.

Current status:
Awaiting resubmission

Reports on this Submission

Report #1 by Anonymous (Referee 1) on 2026-2-6 (Invited Report)

Report

This proceeding present a proof of principle novel method based on machine learning to complement the classical data quality procedure to detect periods with poor quality data in the ATLAS Liquid Argon calorimeter. It is well written with sufficient figures and references.
I do not have any corrections and I recommend to publish the current version.

Recommendation

Publish (easily meets expectations and criteria for this Journal; among top 50%)

  • validity: high
  • significance: high
  • originality: top
  • clarity: top
  • formatting: excellent
  • grammar: perfect

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