Title: IFMIF Accelerators: Prospects and Challenges

Speaker: Dr. P.A.Phi Nghiem, CEA/DSM/IRFU/SACM, Saclay, France

Host: Prof. TANG Jingyu

Time: 08:30 AM, Sept.28, 2012,  

Place: Room C305, IHEP Main Building

Abstract:

The IMIF accelerators are part of the Broader Approach signed between Japan and Europe with the purpose of materials studies for future nuclear fusion reactors. Their very high D+ beam intensity (2x125 mA CW) induces a very high beam power (2 x 5 MW), and particularly strong space charge effects as the beam energy is relatively low (40 MeV). The simultaneous combination of these features makes that unprecedented challenges must be overcome. Special considerations and new concepts have been developed right at the stage of beam dynamics design. This seminar details the global strategy used for optimising the accelerator parameters, and also analyses the obtained results on such a high intensity beam in terms of losses, emittance growth and halo formation.

About the speaker:

PhD thesis in Plasma physics (1981) at University Paris 11 - Orsay Research in Plasma Physics, Astrophysics and Accelerator Physics Has participated in many beam dynamics studies of Accelerators for Synchrotron Radiation production, and for Nuclear Physics studies in France and Europe Presently Coordinator of beam dynamics studies for the IFMIF accelerators.