THPS021

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URL	https://doi.org/10.18429/JACoW-IPAC2025-THPS021
Title	Application of distributed temperature sensor for fire and cryogenic leak detection in accelerator tunnels
Authors	M. Dole, D. DI FRANCESCA, H. Nissen, J. Blanc, J. Bremer, J. FERNANDEZ, L. Dufay-Chanat, L. Contini, M. Van de veire, O. Rios, P. Ninin, R. Kallada Janardhan, R. Nunes, R. Samoes, S. Evrard, T. Hakulinen European Organization for Nuclear Research
Abstract	High-energy accelerators like CERN’s Large Hadron Collider (LHC) present hazards characterized by temperature variations such as cryogenic leak or fire. Considering that LHC tunnels are large, underground, and radioactive areas, alternatives to traditional systems are explored to improve hazard detection. CERN is investigating the feasibility of installing a large-scale temperature monitoring system in LHC tunnels using Distributed Temperature Sensor (DTS) technology. Based on optical fibre, such a system would be resistant to the LHC radioactive environment and could detect temperature anomalies associated with both fire and cryogenic leak events. This paper presents ongoing studies and a prototype of DTS equipment in the LHC tunnel installed and tested at the beginning of 2025. This publication evaluates the DTS as a safety enhancement tool for accelerator facilities. The potential improvements brought by installing a DTS in LHC tunnels will also be discussed.
Paper	download: THPS021.pdf
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Conference	16th International Particle Accelerator Conference
Series
Location	Taipei, Taiwan
Date	01-06 Jun 2025
Publisher	JACoW Publishing, Geneva, Switzerland
Editorial Board	* Ming-Chyuan Lin - National Synchrotron Radiation Research Center * Yoichi Sato - KEK * Jui-Che Huang - National Synchrotron Radiation Research Center * David Button - Australian Nuclear Science and Technology Organisation * Ping-Shun Chuang - National Synchrotron Radiation Research Center
Online ISBN	978-3-95450-248-6
Online ISSN	2673-5490
Received	19 May 2025
Revised	31 May 2025
Accepted	01 June 2025
Issued	05 November 2025
DOI	10.18429/JACoW-IPAC2025-THPS021
Pages	2996-2999
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.