Transport from electron-scale turbulence in toroidal magnetic confinement devices

Ren, Y.; Guttenfelder, W.; Kaye, S. M.; Wang, W. X.

doi:10.1007/s41614-023-00138-z

Rev. Mod. Plasma Phys.

2024

DOI: 10.1007/s41614-023-00138-z

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Transport from electron-scale turbulence in toroidal magnetic confinement devices

Y. Ren,

W. Guttenfelder,

S. M. Kaye

et al.

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References 259 publications

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Millimeter-wave high-wavenumber scattering diagnostic developments on EAST and NSTX-U

Sun,

Liu,

Ren

et al. 2024

Review of Scientific Instruments

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A pioneering 4-channel, high-k poloidal, millimeter-wave collective scattering system has been successfully developed for the Experimental Advanced Superconducting Tokamak (EAST). Engineered to explore high-k electron density fluctuations, this innovative system deploys a 270 GHz mm-wave probe beam launched from Port K and directed toward Port P (both ports lie on the midplane and are 110° part), where large aperture optics capture radiation across four simultaneous scattering angles. Tailored to measure density fluctuations with a poloidal wavenumber of up to 20 cm−1, this high-k scattering system underwent rigorous laboratory testing in 2023, and the installation is currently being carried out on EAST. Its primary purpose lies in scrutinizing ion and electron-scale instabilities, such as the electron temperature gradient (ETG) mode, by furnishing measurements of the kθ (poloidal wavenumber) spectrum. This advancement significantly bolsters the capacity to probe high-k electron density fluctuations within the framework of EAST. Beam tracing and data interpretation modules developed for both EAST and NSTX-U high-k scattering diagnostics are described.

show abstract

Millimeter-wave high-wavenumber scattering diagnostic developments on EAST and NSTX-U

Sun,

Liu,

Ren

et al. 2024

Review of Scientific Instruments

View full text Add to dashboard Cite

show abstract

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Transport from electron-scale turbulence in toroidal magnetic confinement devices

Cited by 1 publication

References 259 publications

Millimeter-wave high-wavenumber scattering diagnostic developments on EAST and NSTX-U

Millimeter-wave high-wavenumber scattering diagnostic developments on EAST and NSTX-U

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