| Issue |
EPJ Web Conf.
Volume 338, 2025
ANIMMA 2025 – Advancements in Nuclear Instrumentation Measurement Methods and their Applications
|
|
|---|---|---|
| Article Number | 09002 | |
| Number of page(s) | 6 | |
| Section | Environmental and Medical Sciences | |
| DOI | https://doi.org/10.1051/epjconf/202533809002 | |
| Published online | 06 November 2025 | |
https://doi.org/10.1051/epjconf/202533809002
Gamma ray monitors for MultiMod’Air, a mobile environmental monitoring platform
1 Université Paris-Saclay, Université Paris Cité, CEA, CNRS, AIM, F-91191 Gif-sur-Yvette, France
2 CEA, DES, IRESNE, DEC, Cadarache F-13108 Saint-Paul-Lez-Durance, France
3 Université Paris-Saclay, CEA, SGLS, F-91191, Gif-sur-Yvette, France
4 Airparif, The air quality observatory for the Paris region, Paris, France
5 Université Paris-Saclay, CEA, List, F-91120, Palaiseau, France
6 Laboratoire des Sciences du Climat et de l’Environnement (LSCE), IPSL, CEA-CNRS-UVSQ, Université Paris-Saclay, Orme des merisiers, Gif sur Yvette, France
7 CEA, DES, IRESNE, DTN, Cadarache F-13108 Saint-Paul-Lez-Durance, France
8 Université Paris-Saclay, CEA, NIMBE, F-91191, Gif-sur-Yvette, France
* This email address is being protected from spambots. You need JavaScript enabled to view it.
Published online: 6 November 2025
Abstract
Multimod’Air is a demonstrator of a mobile and energy self-sufficient platform for environmental measurement in any place of interest from cities, rural or industrial outdoor areas. The platform comprises a dozen of detectors including gaseous pollutant and fine particle sensors for pollution monitoring, as well as a complete weather station (rainfall intensity, wind speed, atmospheric pressure, relative humidity, temperature, solar irradiance and more) and gamma-ray monitors. The paper is specifically devoted to the gamma ray detectors for radiation monitoring with a focus on their architecture, real time and offline data analysis process and performance. Two different and complementary gamma ray monitors have been designed and integrated. The first prototype operates a Kromek GR1+ detectors while the second relies on the advanced multichannel Caliste-O detector technology initially designed for astrophysics applications and recently used for nuclear monitoring ground applications. Both detectors’ electronics are coupled to a local ODROID XU4 microcomputer for data acquisition, management and communication. While GR1+ detector sends an integrated spectrum every minute, Caliste-O both sends aggregated spectra over all channels every minute and photon event list on demand. The two autonomous prototypes have been successfully tested outdoors, and the results of the measurements are presented.
Key words: Gamma-ray spectrometry / anomaly detection / natural radioactivity / radon
© The Authors, published by EDP Sciences, 2025
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