DCF houses two accelerators, a 5MV tandem Pelletron and a 2.5MV Pelletron, configured to provide for a range of ion irradiation and ion beam analysis capabilities across 8 beam lines. Ion beam irradiation allows rapid achievement of materials damage levels accumulated during many years of in-reactor exposure and provides data on the effects of radiation under very specific conditions of temperature, radiation dose rate and radiation dose.
The technique also allows for tightly controlled in-situ interrogation of materials properties during irradiation, providing data for use to develop and validate predictive radiation effects models. Dual ion beam capability allows for simultaneous gas implantation with radiation damage creation.
The two accelerators are:
• An NEC model 15SDH-4 delivering Mz+ ions with energy 5(z+1) MeV, e.g. 1H+ ions up to 10 MeV, 4He2+ ions up to 15 MeV and heavy ions up to a possible maximum of 35 MeV. Six beam lines are available for selection from the 5MV tandem, including a high dose 'hot cell' and an Ion Beam Analysis end station. Two ion sources; one for high current 1H+ and 4He2+ beams, with a second source for lower currents of heavy ions.
• An NEC Model 7.5SH-2, capable of accelerating ions to energies up to 2.5 MeV. Equipped with an RF plasma source capable of producing 1H+, 4He2+ ions or heavier gas ions. Two beam lines, one of which can be configured to coincide a beam line from the 5MV tandem accelerator to provide two dual beam irradiation.