IFMIF-LIPAc DIAGNOSTICS AND ITS CHALLENGES

The International Fusion Materials Irradiation Facility (IFMIF) aims at providing a very intense neutron source (10 17 neutron/s) to test the structure materials for the future fusion reactors beyond ITER (International Thermonuclear Experimental Reactor). Such a source will be driven using 2 deuteron accelerators of 125 mA cw each up to 40 MeV impinging into a lithium liquid curtain, thus producing very high neutron flux with a similar spectrum as those expected in fusion reactors. A validation phase was decided for this 10 MW facility consisting in the construction of part of the accelerator facility, the so-called LIPAc (Linear IFMIF Prototype Accelerator). LIPAc, which is in construction phase, will accelerate a 125 mA cw beam deuteron up to the first of the four superconductive modules foreseen for IFMIF. The 9 MeV beam will be driven through the HEBT to the beam dump. This facility is currently under construction at Rokkasho (Japan). In this contribution, we describe the beam diagnostics foreseen for this 1.125 MW prototype accelerator emphasizing the challenges encountered and present solutions how to overcome them. IFMIF-EVEDA

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