MOBG001

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URL	https://doi.org/10.18429/JACoW-ICALEPCS2025-MOBG001
Title	Design and implementation of the ESS personnel safety system
Authors	A. Petrushenko, A. Farshidfar, A. Abujame, A. Nordt, A. Andersson, C. Webber, D. Plotnikov, D. Daryadel, J. Lastow, J. Gustafsson, J. Grönvall, L. Nunes, M. Zmuda, M. Carroll, M. Eriksson, M. Mansouri, N. Naicker, P. Holgersson, R. Foroozan, V. Harahap, Y. Takzare European Spallation Source
Abstract	The European Spallation Source (ESS) in Lund, Sweden, is a state-of-the-art research facility featuring the world’s most powerful linear proton accelerator and a high-intensity neutron source. ESS employs a comprehensive Personnel Safety System (PSS), which integrates several safety interlock systems distributed across the facility. These systems operate independently, but are connected via a centralized interlink, which allows them to coordinate hazard mitigation and determine the facility’s readiness for proton beam generation and neutron production. The ESS PSS architecture is designed to provide a reliable and robust safety framework, with a strong focus on scalability, upgradeability, and maintainability to support long-term and efficient operation. It is based on the Nexus PSS, a PLC-based system that manages communication between distributed safety subsystems. A fiber optic ring network ensures real-time, fail-safe communication with high availability and built-in redundancy. This design allows quick response to safety events and supports system reconfiguration in case of failures while maintaining operational integrity. This paper provides an overview of the ESS PSS framework, including its integration, communication infrastructure, and approaches to key safety challenges.
Paper	download: MOBG001.pdf
Cite	BibTeX, LaTeX, Text/Word, RIS, EndNote
Conference	20th Int. Conf. Accel. Large Exp. Phys. Control Syst. (ICALEPCS'25)
Series
Location	Chicago, IL, USA
Date	20-26 Sep 2025
Publisher	JACoW Publishing, Geneva, Switzerland
Editorial Board	Kent Wootton (ANL), Jeffery Biss (FNAL), Gustavo Bruno (ANL), Jeff Kirchman (ANL), Kelly Jaje (ANL), Denise Skiadopoulos (ANL), SuYin Grass Wang (ANL)
Online ISBN	978-3-95450-255-4
Online ISSN	2226-0358
Received	06 October 2025
Revised	07 October 2025
Accepted	22 October 2025
Issued	25 November 2025
DOI	10.18429/JACoW-ICALEPCS2025-MOBG001
Pages	30-32
Copyright	Published by JACoW Publishing under the terms of the Creative Commons Attribution 4.0 license. Any further distribution of this work must maintain attribution to the author(s), the published article's title, publisher, and DOI.