CEA, Gif-sur-Yvette
INFN/LNL, Legnaro (PD)
CIEMAT, Madrid
The IFMIF project (International Fusion Materials Irradiation Facility) is one of the three parts of the Fusion Broader Approach signed by Japan and Europe, aiming at studying materials which must resist to very intense neutron radiations in future fusion reactors. One major system of this project is its two accelerators producing the neutron flux by accelerating Deuteron particles up to 40 MeV against a Lithium target. In a first phase called EVEDA (Engineering Validation and Engineering Design Activity), a full scale prototype accelerating particles up to 9 MeV is being studied and constructed in Europe, to be installed in Japan. Two unprecedented performances are required: the very high power and very high intensity of 2x5 MW and 2x125 mA CW. That leads to numerous unprecedented challenges: harmful losses even for those as low as 10-6 of the beam, non-linear dynamics induced by very strong space charge forces, difficulties for equipment and diagnostic implementations in the high compact sctructure, need of specific tuning strategies in this context. These issues are highlighted in this article, and the ways they are addressed are detailed.
IPN, Orsay
GANIL, Caen
IN2P3 IPNL, Villeurbanne
CEA, Gif-sur-Yvette
The SPIRAL2 facility at GANIL-Caen is now in its construction phase, with a project group including the participation of many French laboratories (CNRS, CEA) and international partners. The SPIRAL2 facility will be able to produce various accelerated beams at high intensities: 40 MeV Deuterons, 33 MeV Protons with intensity until 5mA and heavy ions with A/Q=3 up to 14.5MeV/u until 1mA current. We will present the final status of the high energy beam transport lines of the new facility. Various studies were performed on HEBT and beam-dump concerning beam dynamics, safety and thermo-mechanicals aspects. New experimental areas using stable beams and the cave dedicated to radioactive ion production will be presented according the scientific program.