Bibliographic Details
| Title: |
Design of a low frequency, density profile reflectometer system for the MAST-U spherical tokamak. |
| Authors: |
Rhodes, T. L.1 (AUTHOR) trhodes@ucla.edu, Peebles, W. A.1 (AUTHOR), Zeng, Lei1 (AUTHOR), Hall-Chen, Valerian2 (AUTHOR), Ronald, Kevin3 (AUTHOR), Kubota, S.1 (AUTHOR), Meng, Yusong4 (AUTHOR), Lantsov, R.1 (AUTHOR), Michael, C. M.1 (AUTHOR), Crocker, N. A.1 (AUTHOR), Scannell, R.5 (AUTHOR) |
| Source: |
Review of Scientific Instruments. Aug2024, Vol. 95 Issue 8, p1-6. 6p. |
| Subject Terms: |
*ELECTRON density, *LANGMUIR probes, *REFLECTOMETRY, *PLASMA frequencies, *SPATIAL resolution, *THOMSON scattering |
| 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. [ABSTRACT FROM AUTHOR] |
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| Database: |
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