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Sladkomedova AD, Alekseev AG, Bakharev NN, et al. Tomography diagnostic of plasma radiated power on the spherical tokamak Globus-M. Rev Sci Instrum. 2018;89(8):083509doi: 10.1063/1.5039801.
Sladkomedova, A. D., Alekseev, A. G., Bakharev, N. N., Gusev, V. K., Khromov, N. A., Kurskiev, G. S., Minaev, V. B., Patrov, M. I., Petrov, Y. V., Sakharov, N. V., Shchegolev, P. B., Solokha, V. V., Telnova, A. Y., Tolstyakov, S. Y., & Zabrodsky, V. V. (2018). Tomography diagnostic of plasma radiated power on the spherical tokamak Globus-M. The Review of scientific instruments, 89(8), 083509. https://doi.org/10.1063/1.5039801
Sladkomedova, A D, et al. "Tomography diagnostic of plasma radiated power on the spherical tokamak Globus-M." The Review of scientific instruments vol. 89,8 (2018): 083509. doi: https://doi.org/10.1063/1.5039801
Sladkomedova AD, Alekseev AG, Bakharev NN, Gusev VK, Khromov NA, Kurskiev GS, Minaev VB, Patrov MI, Petrov YV, Sakharov NV, Shchegolev PB, Solokha VV, Telnova AY, Tolstyakov SY, Zabrodsky VV. Tomography diagnostic of plasma radiated power on the spherical tokamak Globus-M. Rev Sci Instrum. 2018 Aug;89(8):083509. doi: 10.1063/1.5039801. PMID: 30184710.
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Rev Sci Instrum. 2018 Aug;89(8):083509. doi: 10.1063/1.5039801.

Tomography diagnostic of plasma radiated power on the spherical tokamak Globus-M.

The Review of scientific instruments

A D Sladkomedova, A G Alekseev, N N Bakharev, V K Gusev, N A Khromov, G S Kurskiev, V B Minaev, M I Patrov, Yu V Petrov, N V Sakharov, P B Shchegolev, V V Solokha, A Yu Telnova, S Yu Tolstyakov, V V Zabrodsky

Affiliations

  1. Ioffe Institute, Saint-Petersburg 194021, Russia.
  2. SRC RF TRINITI, Troitsk, Moscow 142190, Russia.

PMID: 30184710 DOI: 10.1063/1.5039801

Abstract

A diagnostic system for plasma radiated power tomography on Globus-M was upgraded with a new linear array based on silicon photodiodes. The hardware of the diagnostic system based on a 256-channel tangential matrix array and a 24-channel linear array is described. The algorithm for 2D tomographic reconstruction of plasma emissivity is presented. It uses the Tikhonov regularization method and anisotropic diffusion functional as a side constraint. Simulated plasma emissivity profiles were used to test and assess the capabilities of the developed algorithm. Data analysis was carried out in ohmic and neutral beam heated discharges to demonstrate the performance of the tomography diagnostic in plasmas with different parameters. The presented results illustrate the proper functioning of the tomography system that allowed to reveal and study various plasma phenomena, including magnetohydrodynamic mode.

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