Localised Instabilities in Magnetically Confined Plasmas Heated By Radio Waves

The H-1 Heliac Major National Facility will be used for experiments to search for localised plasma "ballooning" instabilities. These instabilities, studied theoretically but not yet identified in experiments, are thought to limit the pressure achievable in plasmas of interest for production of renewable, low-greenhouse gas emission, fusion power, and are also invoked to explain magnetospheric phenomena like auroral substorms. The flexible magnetic configuration, radio frequency (rf) and microwave plasma heating systems, and diagnostic set of H-1 are uniquely suited to this program. Advances in rf plasma techniques and diagnostics will also benefit the development of novel communications and instrumentation technologies.