Job offer

European Commission; France; Sur place; EUR 25 000 - 30 000; Plein temps

Résumé du poste

Une organisation de recherche en France propose un projet de doctorat sur le développement de diagnostics pour des faisceaux d'électrons relativistes. Le candidat travaillera sur des installations laser de haute intensité, contribuera à l'optimisation des processus et analysera les résultats. Ce poste est destiné à une personne ayant une solide connaissance en physique et un fort intérêt pour la recherche expérimentale.

Qualifications

• Connaissances générales en physique, optique, électromagnétisme et physique des plasmas.
• Intérêt pour la physique expérimentale et les développements techniques.
• Compétences en programmation pour l'analyse de données et le contrôle à distance des diagnostics.

Responsabilités

• Développer des diagnostics pour caractériser les faisceaux d'électrons relativistes.
• Participer à des campagnes expérimentales avec des laser intenses.
• Analyser les résultats et rédiger des rapports de progrès.

Connaissances

Connaissances en physique

Optique

Électromagnétisme

Physique des plasmas

Compétences en programmation

Autonomie

Communication

Description du poste

Organisation/Company CNRS Department Laboratoire de physique des gaz et des plasmas Research Field Physics Researcher Profile First Stage Researcher (R1) Country France Application Deadline 26 Jun 2025 - 23:59 (UTC) Type of Contract Temporary Job Status Full-time Hours Per Week 35 Offer Starting Date 1 Oct 2025 Is the job funded through the EU Research Framework Programme? Horizon Europe Is the Job related to staff position within a Research Infrastructure? No

Offer Description

The proposed position is offered in the frame of the European project PACRI, aiming to advance plasma accelerator technologies. This activity is also closely linked to EuPRAXIA, which plans to create the world's first high energy plasma-based accelerator with industrial beam quality and user areas. LPGP is a partner of the PACRI and EuPRAXIA projects and contributes to define the acceleration concepts and laser plasma techniques that will be used to achieve and characterize the accelerated electron beams.
The mechanism of laser driven wakefield in plasma enables the acceleration of electrons in a short pulse laser generated plasma wave, where electrons are trapped and accelerated like a surfer catching a wave on the ocean. This advanced method has several advantages compared to conventional electrostatic technologies in vacuum. Accelerating gradients are much larger and electrons with energies of the order of 1 GeV can be achieved over plasmas a few centimeter long. It provides intense, short duration relativistic electron beams with compact devices. Numerous applications are foreseen, ranging from medical diagnostic and therapy, to high energy physics.
However, this technique is still under development. In particular, it is important to achieve improved stability and reproducibility of the electron beam characteristics. In order to use these electron beams, non destructive diagnostics permitting shot-to-shot analysis of the beam are required.
In this context, the proposed PhD project is to develop diagnostics to characterize the relativistic electron beam at the exit of the gas cell, in time and transverse position, for each shot. The aim is to achieve a micron precision in the transverse plane and femtosecond resolution in the longitudinal direction. Developed diagnostics will be tested during laser plasma experiments performed at ultra-intense laser facilities in France and in Europe.

The proposed PhD project includes the design and implementation of diagnostics to characterize the relativistic electron beam at the exit of a gas cell, in time and transverse position, for each shot. The aim is to achieve a micron precision in the transverse plane and femtosecond resolution in the longitudinal direction. Developed diagnostics will be tested during laser plasma experiments performed at ultra-intense laser facilities in France and in Europe
Contribute to the design of electron diagnostics, and implement them in experiments using gas cells, participate to experimental campaigns using intense laser facilities (100TW class up to PW depending on beamtime allocation), contribute to optimisation processes using artificial intelligence methods, analyse results, write progress reports and publications.
Skills :
General knowledge in physics, optics, electromagnetism, plasma physics
Interest for experimental physics and technical developments involving optics, lasers and electromagnetic wave interaction with matter
Programming skills for data analysis, diagnostic remote control, or automation
Capability to work in a team, while maintaining a good autonomy
Capability to communicate results and analysis, through written documents and oral presentations
Working knowledge of english langage