Design of a low frequency, density profile reflectometer system for the MAST-U spherical tokamak
Year: 2024
Type: article
Abstract: Validated and accurate edge profiles (temperature, density, etc.) are vitally important to the Mega Ampere Spherical Tokamak Upgrade (MAST-U) divertor and confinement effort. Density profile reflectometry has the potential to significantly add to the measurement capabilities currently available on MAST-U (e.g., Thomson scattering and Langmuir probes). This work presents the diagnostic requirements, problems, and solutions facing profile reflectometry in spherical tokamaks and MAST-U in particular. Requirements include density measurements near zero electron density in the scrape off layer region, coverage for a broad range of MAST-U plasma parameters, high time (≤10 microseconds) and spatial resolutions (≤1 cm), reliability, and identification of the plasma start frequency.
Source: Review of Scientific Instruments
DOI: 10.1063/5.0219578
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
Awards: G1514375603, G2294940844, G289167552, ADVANCING THE PHYSICS BASIS FOR PREDICTION AND CONTROL OF SPHERICAL TOKAMAKS VIA EXPERIMENTAL INVESTIGATION OF ENERGETIC ION DRIVEN INSTABILITIES AND VALIDATION OF SIMULATIONS, G5241785400, G7633173529, TURBULENCE AND TRANSPORT SCIENCE ON MAST-U: MAGNETIC AND DENSITY TURBULENCE, TURBULENCE FLOW, GAMS, AND ZONAL FLOWS
OpenAlex ID: W4401581153