Design of a low frequency, density profile reflectometer system for the MAST-U spherical tokamak

Rhodes, T. L. and Peebles, W. A. and Zeng, Lei and Hall-Chen, Valerian and Ronald, Kevin and Kubota, S. and Meng, Yusong and Lantsov, R. and Michael, C. M. and Crocker, N. A. and Scannell, R. (2024) Design of a low frequency, density profile reflectometer system for the MAST-U spherical tokamak. Review of Scientific Instruments, 95 (8). 083528. ISSN 0034-6748 (https://doi.org/10.1063/5.0219578)

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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.

ORCID iDs

Rhodes, T. L., Peebles, W. A., Zeng, Lei, Hall-Chen, Valerian, Ronald, Kevin ORCID logoORCID: https://orcid.org/0000-0002-8585-0746, Kubota, S., Meng, Yusong, Lantsov, R., Michael, C. M., Crocker, N. A. and Scannell, R.;
  • Item type:Article
    ID code:90817
    Dates:
    Date
    Event
    14 August 2024
    Published
    24 July 2024
    Accepted
    Notes:Copyright © 2024 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in T. L. Rhodes, W. A. Peebles, Lei Zeng, Valerian Hall-Chen, Kevin Ronald, S. Kubota, Yusong Meng, R. Lantsov, C. M. Michael, N. A. Crocker, R. Scannell; Design of a low frequency, density profile reflectometer system for the MAST-U spherical tokamak. Rev. Sci. Instrum. 1 August 2024; 95 (8): 083528 and may be found at https://doi.org/10.1063/5.0219578
    Subjects:Science > Physics > Plasma physics. Ionized gases
    Department:Faculty of Science > Physics
    Depositing user: Pure Administrator
    Date deposited:11 Oct 2024 09:12
    Last modified:11 Oct 2024 09:12
    Related URLs:
    URI:https://strathprints.strath.ac.uk/id/eprint/90817
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