Our team

I began my career in 1997 in the French Navy as an electrical technician on weapons systems. After training as a radiation protection technician (RT), I joined the RPD at Ile Longue, with various missions focused on nuclear-armed ballistic missile submarines (SNLE): radiological assistance, reactor compartment mapping, radiological analyses in the medium activity laboratory, nuclear safety exercises…

In 2003, after training as a senior technician in radiation protection (TRS) at the INSTN, I joined the Ecole des Applications Militaire à l'Energie Atomique (EAMEA) where I taught radioactivity, radiation protection, dosimetry, and nuclear measurement. From that time on, to compensate for the obvious lack of tools, I started to create my own calculation tools in order to carry out simple and fast tutorials as part of my teaching.

In 2010, I joined the RDP of the Cherbourg Arsenal in charge of the 2SNM (Marine Nuclear Monitoring System), a system linked to the National Measurement Network (NMN). This experience allowed me, among other things, to create the Dosimex-I code, particularly on the atmospheric transfer option.

Since 2013, after publishing with Alain Vivier the book 'Calculation of dose generated by ionizing radiation', I have been with the radiation protection department of the Orano site at La Hague, where I have met most of the site's radiation protection challenges: dismantling of the UP2-400 unit and of a UNGG fuel dissolver, dismantling advisor on the ELAN2B and STE2 perimeters, then head of radiation protection for the High Activity perimeter and for the Conditioning Operational Unit of the UP2-800 and UP3 plants, covering vitrification, waste treatment and hull compaction. Since 2019, I have led the sector's expertise division, providing technical support and innovation in radiation protection and conventional safety, through to mixed asbestos and radiological risks.

After studying at the Ecole de l'Air (class of '80) and being assigned to a Mirage IV maintenance unit, I was designated to be a PCR for X-rays on canopies. Apart from the X-ray generator, I had neither a radiation meter nor any calculation tools at the time, so I had no idea of the radiological risk involved. This experience undoubtedly sowed the seeds for the future.

In 1990, I joined the Ecole Atomique de Cherbourg to do an atomic engineering degree. I was lucky enough to be able to stay there as a teacher.

Responsible for teaching nuclear physics and a measurement laboratory, I began to understand the phenomena of radiation-matter interaction and realized that it should be possible to calculate, not just measure, a dose rate from a 1 GBq source of Cesium 137 placed at 1 m. My assistant, a TRS by training, answered me: 'yes, it is possible, it is called dosimetry'. I understood, through this anecdote, that this subject was not sufficiently taught in the training courses.

My first modeling experience involved the calculation of the stopping power of charged particles, using Bethe's formula (see Appendix E). I was then struck by the agreement between the theoretical prediction and the results of measurements with conversion electrons and thin copper targets. This cross validation between modeling and measurement, one reinforcing the other, was a revelation.

In 1998, I joined the CEA, first at the RDP in Cadarache at the AtPu (plutonium workshop), then in 2000, at the INSTN in Saclay. The first training course I created there was entitled 'dosimetry of ionizing radiation'.

During visits to the Ecole Atomique, I met Gérald Lopez. I quickly recognized his skills in modeling, his capacity for analysis associated with an extraordinary work capacity. At that time, he had already laid the foundations for what would become Dosimex-GX.

In 2010, when EDP agreed to publish a book on dose calculations, it became clear to me that such a book should be accompanied by calculation utilities, and especially that Gérald Lopez was essential to the realization of this project. This is how Dosimex was born.