Design of a low frequency, density profile reflectometer system for the MAST-U spherical tokamak
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.
Authors
- C. Michael (ORCID: https://orcid.org/0000-0003-1804-870X)
- L. Zeng (ORCID: https://orcid.org/0000-0001-5856-3912)
- R. Lantsov
- V. H. Hall-Chen (ORCID: https://orcid.org/0000-0001-6009-3649)
- R. Scannell (ORCID: https://orcid.org/0000-0002-4064-0817)
- K. Ronald (ORCID: https://orcid.org/0000-0002-8585-0746)
- W. A. Peebles
- S. Kubota (ORCID: https://orcid.org/0000-0003-1994-9825)
- N. A. Crocker (ORCID: https://orcid.org/0000-0003-2379-5814)
- T. L. Rhodes (ORCID: https://orcid.org/0000-0002-8311-4892)
- Yusong Meng
Institutions
- Agency for Science, Technology and Research (SG)
- University of California, Los Angeles (US)
- University of Strathclyde (GB)
- Culham Centre for Fusion Energy (GB)
- Institute of High Performance Computing (SG)
Publication Details
- Journal
- Review of Scientific Instruments
- Published
- 2024-08-01
- DOI
- https://doi.org/10.1063/5.0219578
- Citations
- 5
- Primary Topic
- Magnetic confinement fusion research
- Type
- article
- Field-Weighted Citation Impact
- 3.30
Funders
- Agency for Science, Technology and Research
- Engineering and Physical Sciences Research Council
- Fusion Energy Sciences