Full description
Description:
Accurate modeling of the coupled propagation of electrons and photons in matter is essential in several fields, including radiation shielding and nuclear instrumentation. Given the scarcity of publicly available experimental data, comparisons between Monte Carlo simulation codes have become common practice.
Recent studies conducted by various CEA units have revealed discrepancies between TRIPOLI4, MCNP6, and GEANT4. To address these inconsistencies, the teams involved have decided to launch a joint project, taking advantage of a unique data collection campaign planned at the CEA between 2025 and 2027.
Hundreds of pixel detectors must be qualified with beta sources for the future internal tracker of the ATLAS experiment (CERN HL-LHC). The VALERIAN project (VALidation of Electron transport software for Radiation shielding and instrumentation using high-precision data collected by ITkPix modules and their Analysis) aims to develop digital twins of the existing test bench using TRIPOLI4, MCNP6, and GEANT4, and to validate them using experimental data.
The student based at the DPhN will focus on developing the simulation using the TOUCANS code based on Geant4. He/she will be in constant contact with those involved in developing the TRIPOLI4 and MCNP6 simulations. The student will also be involved in collecting data on the VALERIAN test bench, which will be used to validate the simulations and understand the differences between the various codes.
Through this internship, the student will gain a comprehensive overview of the work of an experimental physicist. He/she will be able to contribute ideas and test his/her own ideas in the development of the code. The results obtained will be regularly presented to the collaboration and may be published.
Working environment:
The intern will work at the CEA-Saclay site, within the Irfu nuclear physics department, and in close collaboration with the particle physics department and the radiation protection service’s computing team.
Training and required skills:
Internship for a Master’s student (M1 or M2) or engineering school student lasting 3 to 6 months (with a preference for a 6 month period).
* Basic knowledge in nuclear physics, particle physics, and instrumentation.
* Programming skills in C++ and Python.
* Familiarity with GEANT4 and ROOT software is a plus.
Location
Saclay
Internship conditions
- Internship duration: 6 months
- Level of study: Bac+4/5
- Training: Ingenieur/Master
- Continuation in PhD thesis: No
- Application deadline: 1 janvier 2026
Experimental skills
Language : English