80 Hz repetitive centrifuge injector for hydrogen pellets

The repeating centrifuge pellet injector developed for plasma fuelling experiments at ASDEX Upgrade was improved to give higher repetition rates. The system is now capable of launching pellet series at rates of up to 80 Hz and speeds of up to 1.2 km/s. Differently sized (nominal pellet masses 1.7–4.3×1020 atoms) deuterium pellets have been injected into ASDEX Upgrade. The only limitations at present derive from the pellet feed-in by a single storage cryostat. These might be overcome by using several feed-in sources