Post-doc Neutron studies in molten salt reactors

Due to their characteristics, fast spectrum molten salt reactors appear to be prime candidates for the transmutation of minor actinides.

The ability to reprocess the fuel more or less on-line during operation offers new pathways for transmutation, as the removal of selected species during salt processing can effectively halt the accumulation of heavier actinides in the fuel.

Our is part of the feasibility studies of 4th generation molten salt reactors (RSF or MSR), from the point of view of the management of combustible waste, in particular the incineration of minor actinides (MA).

The objective of the work is to characterize pre-concepts of minor actinide incinerator RSF according to the different objectives allocated to their integration in the French nuclear fleet (stabilization or reduction of the inventory, minimization of the influence of deep disposal, etc.) and cycle-related constraints (existing Pu and AM inventory, etc.).

In this work, the specificities of molten salt reactors will be exploited to design innovative transmutation strategies: sensitivity studies on transmutation performance, research into the minimization of minor actinide production.

A short-term and long-term operating scheme for a core implementing this process will be proposed and discussed.

The first objective assigned to the implementation of the RSF in the French nuclear fleet will be to seek a balance of the fleet making it possible to stabilize its inventory by considering a reference scenario.

Holder of a doctorate in reactor physics, you have a first professional experience.

Technical skills:

You have knowledge and know-how in neutronics, reactor and cycle physics.

Used tools: 

You will use the CEA’s modeling and calculation tools: Monte Carlo simulation code TRIPOLI4, evolution procedure dedicated to the RSF MOSARELA, COSI and SEPAR scenario tools.

You master programming languages: Python/Shell/C++.

You know how to carry out complex physical modeling with the appropriate software on centralized computers, LINUX or UNIX workstations.

Behavioral skills:

Good communicator, you appreciate teamwork and know how to communicate with different interlocutors.

Your writing and analytical skills are recognized, including in English.

Autonomous, you like to conduct scientific studies and report on the progress of your work.

The CEA is a player committed to the reception, integration and continued employment of employees with disabilities. Thus, if you wish, you can also attach any documents justifying your disability (RQTH, mobility inclusion card, disability pension, etc.).