Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
273473 | Fusion Engineering and Design | 2006 | 6 Pages |
For the investigation of interactions between the low energy ions in fusion edge plasmas and plasma facing materials, new electrodes for beam extraction have been developed to achieve a 100-eV level, high-flux and steady state operation with large irradiation area in the super low energy ion source (SLEIS) facility. The structure of these electrodes has a multi-aperture triode electrodes, whose size is smaller than conventional ones. Namely, these electrodes with the thickness of 0.5 mm have a multi-aperture of 0.9 mm in diameter. The gap distance between electrodes is 0.5 mm. Ion fluxes have been achieved from 1.7 × 1020 to 5.3 × 1020 H/m2 s with the energy from 32 to 102 eV/H. This paper also presents a study about the temperature dependence of blister formation of tungsten by using this new hydrogen ion beam.