Tokamak reactor studies: DT demonstration reactors and DD reactors

Several issues related to the application of tokamak devices as fusion power reactors are summarized. Most of this work deals with DT plasmas and tokamak devices sized to be representative of a fusion demonstration (DEMO) power reactor. Key DEMO issues include current drive, impurity control and tritium breeding blankets. Current drive topics include startup and steady-state plasma current maintenance by a variety of techniques. Issues related to DD-fuelled reactors are also discussed, including effects of synchrotron radiation, nuclear elastic scattering, and features of DD reactors compared with DT reactors. (author)