General information
Offer title : M/F Postdoctoral researcher in rare event physics: XENON collaboration (H/F)
Reference : UMR6457-SOPDEP-064
Number of position : 1
Workplace : NANTES
Date of publication : 18 September 2025
Type of Contract : Researcher in FTC
Contract Period : 12 months
Expected date of employment : 1 December 2025
Proportion of work : Full Time
Remuneration : Between €3021.50 à €4389,11 depending on experience
Desired level of education : Doctorate
Experience required : Indifferent
Section(s) CN : 01 - Interactions, particles, nuclei, from laboratory to cosmos
Missions
The selected candidate will join the international XENON collaboration, dedicated to the direct detection of dark matter. They will contribute to various activities including data taking, data analysis, and Monte Carlo simulations. The candidate will be involved in the development and monitoring of the technical aspects of XENONnT, the largest liquid xenon time projection chamber built to date.
Specific responsibilities will be defined based on the candidate's expertise and scientific interests. Extended stays at LNGS are expected.
Activities
The candidate's main responsibilities will include:
Analysis of experimental data from XENONnT
• Detector calibration
• On-site participation in operations (LNGS, Italy)
• Monte Carlo simulations of detector response
Skills
The skills required of the candidate are as follows:
• Solid background in astroparticle physics
• Strong programming skills, especially in Python
• Experience in data processing and analysis
The candidate must hold a PhD in Physics.
The skills expected of the candidate are:
- ability to adapt
- ability to communicate and promote their work, both in writing and orally
- ability to work in a team, including remotely
- fluency in written and spoken English
Work Context
The position is based at SUBATECH (Laboratory for Subatomic Physics and Associated Technologies – UMR 6457), a joint research unit affiliated with the IN2P3/CNRS, IMT Atlantique, and the University of Nantes.
SUBATECH provides a dynamic and multidisciplinary scientific environment. The lab has been involved in the XENON collaboration since 2009, currently contributing to the analysis and operation of XENONnT.
The XENON group at SUBATECH includes 5 permanent researchers (2 from CNRS, 2 from IMT Atlantique, 1 from the University of Nantes), 1 engineer, 1 postdoc, and 5 PhD students. The team has recognized expertise in liquid xenon TPCs, both for fundamental physics experiments (XENON, DARWIN, nEXO, XeLab, XERD, XLZD) and for medical imaging applications (XEMIS project).
The group designed and is responsible for one of the key components of XENONnT: the ReStoX system, which handles xenon storage and purification during critical phases of the experiment.
The team is also strongly involved in dark matter searches and neutrinoless double beta decay studies within the XENON collaboration.
Constraints and risks
No constraints or risks