Hannover 2016 – wissenschaftliches Programm
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P: Fachverband Plasmaphysik
P 5: Poster Session- Helmholtz Graduate School for Plasma Physics
P 5.2: Poster
Montag, 29. Februar 2016, 16:30–19:00, Empore Lichthof
Construction and characterization of a new high current ion source for research of impact of hydrogen irradiation on wall materials for use in nuclear fusion reactors — •Rodrigo Arredondo Parra1,2, Martin Oberkofler1, Klaus Schmid1, Arno Weghorn1, and Rudolf Neu1,2 — 1Max Planck Institute for Plasma Physics, Garching, Germany — 2Technische Universität München, Garching, Germany
The HSQ (HochStromQuelle) is a high current DuoPIGatron type ion source used for research in surface properties of wall materials for nuclear fusion reactors. The existing HSQ-I will be replaced by the conceptually identical HSQ-II, currently under construction. Varying the acceleration potential and optimizing gas inflow and beam focusing grid voltage, ion currents before the deflecting magnet between 10 and 875 µA were reached for acceleration voltages of 0.7 to 8 kV. The ion beam footprint will be characterized, and ion optics will be installed before and after the deflecting magnet, capable of bending 10 keV Ar. A monoenergetic beam of a single species (e.g. D3+) will finally be used for irradiation of samples in the separate implantation chamber at a base pressure of 10−8 mbar. The energy of the impinging particles ranges from 200 eV/D to several keV/D. Fluxes of 1015 D/cm2/s to the target are expected. The temperature of the sample is varied via electron impact heating and the sample weight can be assessed in situ by means of a magnetic suspension balance.