Instrumentation nucléaire avancée pour la mesure radiologique en environnement contraint H/F
CEA · Saclay, Île-de-France, France
- On site
- Internship
- €60,000 / year
- Saclay, Île-de-France, France
Job highlights
- Develop advanced nuclear instrumentation for radiation measurement.
- Advance understanding of RPL detector physics.
- Improve detection of low doses and contamination.
- Utilize LabVIEW, Python for data acquisition.
- Contribute to radiation protection in decommissioning.
About the role
Advanced Nuclear Instrumentation for Radiological Measurement H/F
Context
Within its nuclear instrumentation activities, CEA ISAS is offering a postdoctoral position dedicated to the development of instrumentation for dose measurement and contamination detection on decommissioning sites. These measurements are essential for radiation protection, zone monitoring, and understanding the radiological status.
The project relies on radio-photoluminescent (RPL) detectors, whose optical signal results from irradiation-induced defects in the material. Beyond instrumental development, a scientific challenge of this postdoctoral position will be to better understand the mechanisms of formation, evolution, and reading of these defects, as well as their link to the deposited dose, the type of radiation, and the irradiation conditions.
These questions are crucial for improving measurement sensitivity and reliability, especially when signals are weak. They require distinguishing the contributions specific to the RPL material from those related to the reading optics, acquisition electronics, noise, drifts, or disturbances. The subject therefore lies at the intersection of materials physics under irradiation, dosimetry, compact nuclear instrumentation, optics, signal processing, and metrology.
Objectives of the Postdoctoral Position
The postdoctoral position aims to continue the development of a compact measurement chain based on RPL detectors, while deepening the understanding of the physical phenomena governing their response. The objectives will be to characterize the creation and stabilization mechanisms of radiation-induced defects, establish the link between these defects and the measured signal, improve the detection of low doses and contamination levels, and strengthen the metrological robustness of the device.
Particular attention will be paid to controlling noise, instrumental drifts, environmental effects, and the limitations related to the integration of a compact chain. The postdoctoral researcher will contribute to the development of signal processing, correction, and interpretation methods adapted to weak signals.
Proposed Work
The postdoctoral researcher will participate in the experimental characterization of RPL detectors based on dose, irradiation conditions, and optical reading parameters. They will study the physical and instrumental limitations of the measurement, develop and optimize control, acquisition, and analysis programs using LabVIEW and/or Python, and contribute to the improvement of the measurement chain up to data processing.
The work will include establishing validation protocols under conditions representative of decommissioning, analyzing experimental results, proposing interpretation models or metrological corrections, and scientifically disseminating the results through publications, conferences, and project meetings.
Means / Methods / Software
LabVIEW, nuclear instrumentation, acquisition electronics, signal processing, metrology.
Candidate Profile
This position is for a Ph.D. holder in instrumentation, applied physics, electronics, physical measurements, optics, signal processing, materials science under irradiation, or a related field.
The candidate should have a strong interest in experimental research and instrumental development, with a desire to work at the interface between physical phenomena, sensors, data acquisition, metrology, and signal processing. Motivation to understand the mechanisms of creation and evolution of radiation-induced defects in RPL detectors will be particularly appreciated.
Skills in scientific programming, ideally Python and/or LabVIEW, signal acquisition, instrumentation, experimental data analysis, and signal processing are expected. Experience in dosimetry, nuclear instrumentation, optics, spectroscopy, luminescence, defect physics, or irradiated materials would be an asset, but is not essential.
The position will suit a curious, rigorous, and autonomous individual wishing to contribute to both the understanding of complex physical phenomena and the development of a compact instrument for radiation protection and decommissioning.
Job Location
Site: Saclay
Location: France, Ile-de-France, Essonne (91)
City: Gif-Sur-Yvette
Candidate Criteria
Degree pursued: Other
Applicant
Position availability: 01/07/2026
Key skills/competency
- Nuclear Instrumentation
- Radiological Measurement
- RPL Detectors
- Radiation Protection
- Signal Processing
- Metrology
- LabVIEW
- Python
- Materials Science
- Experimental Physics
Skills & topics
- Nuclear Instrumentation
- Radiological Measurement
- RPL Detectors
- Radiation Protection
- Signal Processing
- Metrology
- LabVIEW
- Python
- Materials Science
- Experimental Physics
- Postdoctoral Researcher
- CEA
How to get hired
- Tailor your resume: Highlight relevant experience in instrumentation, physics, and programming.
- Showcase your research: Emphasize your Ph.D. work and any publications in related fields.
- Demonstrate programming skills: Provide examples of your proficiency in Python and/or LabVIEW.
- Express your interest: Clearly articulate your motivation for this specific postdoctoral role at CEA.
- Prepare for technical questions: Be ready to discuss your understanding of RPL detectors and signal processing.
Technical preparation
Behavioral questions
Frequently asked questions
- What specific scientific fields are relevant for this postdoctoral position at CEA?
- This postdoctoral role at CEA is ideal for candidates with a Ph.D. in instrumentation, applied physics, electronics, physical measurements, optics, signal processing, or materials science under irradiation. A strong background in these areas, particularly with a focus on experimental research and instrumental development, is highly valued.
- What programming skills are essential for the Advanced Nuclear Instrumentation role at CEA?
- Essential programming skills for this CEA position include proficiency in scientific programming, with a preference for Python and/or LabVIEW. Experience in signal acquisition, experimental data analysis, and signal processing is also expected to effectively manage and interpret the data generated.
- What is the primary goal of the postdoctoral research at CEA?
- The primary goal of this postdoctoral research at CEA is to develop compact measurement instrumentation using RPL detectors for dose measurement and contamination detection in decommissioning environments. It also aims to deepen the understanding of the physical phenomena governing the response of these detectors.
- Does CEA require prior experience in nuclear instrumentation for this postdoctoral position?
- While experience in nuclear instrumentation is an asset for this CEA postdoctoral position, it is not strictly indispensable. A strong foundation in related fields like dosimetry, optics, spectroscopy, or defect physics, coupled with a passion for experimental research, can be sufficient.
- What are the expected outcomes of this postdoctoral fellowship at CEA?
- Expected outcomes include the development of a compact measurement chain, a deeper understanding of radiation-induced defects in RPL detectors, improved low-dose detection capabilities, and the robust metrological characterization of the device. Scientific dissemination through publications and conferences is also a key outcome.