Development of H-and D- ion sources for plasma heating

Development of H-and D- ion sources for plasma heating

Development of H-and D- ion sources for plasma heating 150 150 UKAEA Opendata

Development of H-and D- ion sources for plasma heating

The large size of future, and possibly present day, tokamaks requires high neutral atom beam energies for current drive and heating. These injectors must also have a high electrical efficiency and this can be achieved using negative ion sources to create the beam. These large tokamaks, such as ITER or NET require a neutral beam power of around 50-100 MW at beam energy of 1 MeV of D0 • This power is achieved by operating several sources in parallel, each one of which would extract a 28-A beam of D- ions of which 57% are converted to D0 in a gas cell neutralizer and can be transmitted to the torus. The injector for one port consists of four units, each of which is a fully independent unit. This article describes the details of the injector unit which is based on volume plasma sources of D ions.

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12/07/1989