CDD Postdoctoral position in Beam Dynamics (F/M)  
Référence de l'annonce : DSM-IRFU-SACM-LEDA-20150806bis

The need of a facility able to produce fusion-like neutrons has been widely identified by the fusion materials community more than 30 years ago. The International Fusion Materials Irradiation Facility (IFMIF) is projected to provide an accelerator-based neutron source at sufficient intensity and irradiation volume to simulate as closely as possible the first wall neutron spectrum of future nuclear fusion reactors such as DEMO and Power Plants. Neutrons peaking around 14 MeV will be generated through (d,Li) nuclear reactions originating from a 40 MeV deuteron beam impinging on a liquid Li screen. Neutron fluxes of about 10e18 n/(m²·s) will be achieved through two parallel CW 125 mA Linacs that will deposit a beam power of 10 MW into the Li jet.
In order to properly finalize the DEMO engineering design, tests must start as soon as possible with a moderate neutron flux. For this reason, a staged approach is considered where IFMIF, the full scale facility, is preceded by DONES (DEMO-Oriented Neutron Source) focusing in near-term DEMO needs and including only one accelerator.
Implementation starts with the activities to be carried out in the frame of the WP-ENS of the EUROfusion program, in the timeframe 2015-2018, consisting in preparing the detailed engineering design of DONES, with a focus on the systems which are specific as the SRF-Linac and HEBT of the accelerator. The project must also take into account the results of the activities carried out by the IFMIF EVEDA project in the framework of the Broader Approach Agreement and focused on the validation of different critical prototypes.


Type de contrat Post-doctorat
Poste disponible à compter de octobre 2015
Statut du poste Cadre
Formation initiale / Niveau d'études (minimum) Bac+8
Domaines d'études AA - Physique fondamentale
Expérience professionnelle Sans expérience
Langues Français(Courant (Très bon niveau)), Anglais(Courant (Très bon niveau))
Pays France
Centre géographique Saclay
Lieu de travail Saclay


Description du poste :

CEA is strongly involved in the projects of the Broader Approach agreement and is the major European contributor to the IFMIF EVEDA project. Teams from CEA are in charge of the study, manufacturing and delivery of several sub-systems of the Linear IFMIF Prototype Accelerator (LIPAc). CEA has also recently committed to carry out beam dynamics studies, prototyping of high-beta superconducting cavity and optimization of beam instrumentation in the frame of WP-ENS.
The post-doctoral position in Beam Dynamics opened at CEA is related to the studies to be carried out in the frame of WP-ENS with a focus on the beam dynamics activities related to the linac optimization and tuning as well as the High Energy Beam Transfer (HEBT) line of the accelerator. The selected candidate will:
• participate in the finalization of the design of the accelerator
• perform beam dynamics simulations to optimize the linac
• optimize and tune the HEBT in order to get a rectangular and homogeneous beam on the target
• carry out the error studies for the whole accelerator
• participate in the preparation of the technical reports to be delivered
• participate in the technical meetings


Profil du candidat :

The candidate holds a PhD in accelerator physics or equivalence. He She has experience and skills in:
• beam dynamics simulations
• data analysis
• work within international teams
• reporting
• written and spoken communication in French and in English

The selected candidate will be appointed for 24 months. The position is based at CEA-Saclay, France.
For any additional information, please contact Nicolas Chauvin ( or Stéphane Chel (
If you are interested, please send a CV (in PDF format) including a list of publications and a cover letter to Jérôme Schwindling (

A. Thaumoux, 2015-10-12 00:00:00


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