Mar 5 – 8, 2024
Lahan Select Gyeongju, South Korea
Asia/Seoul timezone

Dynamic vacuum and temperature predictions for informed anomaly detection at the CERN-SPS

Mar 7, 2024, 3:00 PM
2h
Lahan Select Gyeongju, South Korea

Lahan Select Gyeongju, South Korea

Lahan Select Gyeongju, South Korea
Poster/Demo Anomaly Detection / Failure Prediction Poster/Demos

Speaker

Francesco Velotti (CERN)

Description

High intensity beams, through electron cloud and impedance based mechanisms, cause an increase in vacuum pressure in the SPS kicker magnets. These magnets are pulsed at high voltage in order to quickly deflect the beam. However, if the vacuum inside their aperture deteriorates, it can lead to an electrical breakdown and potential damage to the kicker itself.

Conversely, a breakdown in a kicker that is not initiated by beam behaviour exhibits a very similar signature - a rapid increase in pressure. Additionally, both an electrical breakdown and rapid increase in dynamic vacuum can occur simultaneously, making it challenging to detect sparks in the magnet and automate the process. The rarity of breakdown events further complicates matters, as simple classification of vacuum signatures cannot be applied.

To address this issue, we propose a data-driven model that predicts vacuum and temperature behavior and distinguishes between normal and anomalous activities.

Primary Keyword failure prediction
Secondary Keyword anomaly detection

Primary author

Francesco Velotti (CERN)

Co-authors

Dr Mike Barnes (CERN) Verena Kain (CERN)

Presentation materials