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Numerical Analysis and Machine Learning● OpenPreview

PhD Position in Automated Gamma Spectrum Analysis via Hybrid Machine Learning

Develop hybrid machine learning algorithms for automated gamma spectrometry to optimize nuclear facility decommissioning.

Best for:Best for candidates with a strong background in machine learning, numerical analysis, and data science interested in nuclear instrumentation and environmental applications.

Université Paris-Saclay · France · R1 · First-stage researcher
More professors at Université Paris-Saclay
Gamma spectrometryMachine learningSpectral unmixingNuclear decommissioningRadiological characterization
Deadline
Nov 30, 2026
46 days
Funding
Salaried
CEA
Start date
2026-10-01
Fixed-term
Location
France
on-site

Overview

This doctoral position at Université Paris-Saclay, in collaboration with CEA/List and CEA/DEDIP, focuses on advancing automated gamma spectrum analysis for nuclear facility decommissioning. The research extends a newly developed hybrid machine learning and statistical unmixing algorithm to characterize concrete surfaces and classify waste contamination levels. The selected candidate will conduct feasibility studies, model model deviations, and optimize decision-making robustness for low-statistics scintillator detector measurements. The project offers a structured three-year research experience within a leading national laboratory setting.

gamma spectrum analysismachine learningnuclear decommissioningradiological characterizationspectral unmixingscintillator detectorsconcrete waste classification

What you'll do

  • Advance the hybrid machine learning and statistical algorithm for concrete surface radiological characterization
  • Perform feasibility studies on modeling deviations of learned models to improve decision-making robustness
  • Analyze low-statistics gamma spectra acquired from scintillator detectors like NaI(Tl) and plastics
  • Collaborate with research teams across CEA/List and CEA/DEDIP to integrate tools into decommissioning workflows
  • Validate algorithm performance on radionuclide identification and quantification under significant environmental deformations

Requirements

Degree required: Master's degree or equivalent in Computer Science, Applied Mathematics, Physics, or a related technical discipline

Degree offered: PhD

Language: English: None specified; French: None specified

Instruction: English / French

Required skills
  • Strong background in machine learning and statistical data analysis
  • Proficiency in programming languages suitable for algorithm development such as Python or C++
  • Familiarity with numerical analysis and mathematical modeling
  • Ability to conduct independent research and collaborate within multidisciplinary teams
Nice to have
Prior knowledge of gamma spectrometry or radiation detection principlesExperience with spectral unmixing or signal processing techniquesFamiliarity with nuclear energy or facility decommissioning applications
Eligibility
  • Applicants must hold a relevant Master's degree qualifying them for doctoral enrollment

Funding & terms

Type
Salaried
Amount
CEA
Duration
36 months
Programme
CEA
CEA

How to apply

Deadline: 2026-11-30

Interested applicants should submit their application materials through the designated portal before the specified deadline, providing all required academic and professional documentation.

Documents required
  • CV
  • Cover letter
  • BSc + MSc transcripts
↗Apply on site

Contact

Christophe Bobin· Supervisor

christophe.bobin@cea.fr

0169082964

CB
Prof.
Christophe Bobin
Département d’Instrumentation Numérique
Lab
Laboratoire National Henri Becquerel pour la Métrologie de l'Activité
Université Paris-Saclay
France
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