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Development of the Dual-beam ion irradiation facility for FUsion materials (DiFU) at RBI, Zagreb

The Dual-beam ion irradiation facility for FUsion materials (DiFU) is under development at the Ruder Boskovic Institute in Zagreb, Croatia, allowing irradiation of fusion-related samples by one or two ion beams. Two ion beams come to the DiFU chamber at an angle of 17◦ between them, from 6 MV HVEC Tandem VDG and 1 MV HVEE Tandetron accelerator. Ion beam handling and scanning systems enable fast electrostatic scanning of the beams over the sample at frequencies 256 - 3200 Hz in the horizontal and vertical axes, enabling the irradiation of areas from 5×5 to 30×30 mm2 . The sample holder enables XYZ positioning of heated, cooled or room temperature samples. Ion fluxes are measured indirectly by insertion of two large Faraday cups in ion beams. Besides, the ion flux is monitored continuously by two sets of XY slits, which, in turn, define limits of the irradiation area on the sample. Sample temperature and conditions during irradiation are monitored by a set of thermocouples, an IR camera and a high- sensitive video-camera.

ion beam irradiation ; dual beam ; fusion research

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