title: ÐÑÐ¸Ð¼ÐµÐ½ÐµÐ½Ð¸Ðµ ÑÐ¸Ð½ÑÐµÐ½ÑÐ¸ÑÐµÑÐºÐ¾Ð¹ Ð´Ð¸Ð°Ð³Ð½Ð¾ÑÑÐ¸ÐºÐ¸ Ð´Ð¾Ð¿Ð¿Ð»ÐµÑÐ¾Ð²ÑÐºÐ¾Ð³Ð¾ Ð¾Ð±ÑÐ°ÑÐ½Ð¾Ð³Ð¾ ÑÐ°ÑÑÐµÑÐ½Ð¸Ñ Ð´Ð»Ñ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ ÑÐ»ÑÐºÑÑÐ°ÑÐ¸Ð¹ Ð¿Ð»Ð¾ÑÐ½Ð¾ÑÑÐ¸ Ð½Ð° ÑÐ¾ÐºÐ°Ð¼Ð°ÐºÐµ Â«ÐÐ»Ð¾Ð±ÑÑ-Ð2Â»
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
title: Application of synthetic diagnostics of Doppler backscattering to investigation of density fluctuations on the tokamak "Globus-M2"
Creators: name: ÐÐµÑÐµÐ»Ð¾Ð², ÐÐ¾Ð½ÑÑÐ°Ð½ÑÐ¸Ð½
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2022
Subjects: ÐÐ¾Ð¿Ð¿Ð»ÐµÑÐ¾Ð²ÑÐºÐ°Ñ ÑÐµÑÐ»ÐµÐºÑÐ¾Ð¼ÐµÑÑÐ¸Ñ
ÑÑÑÐ±ÑÐ»ÐµÐ½ÑÐ½Ð¾ÑÑÑ
ÑÐ»ÑÐºÑÑÐ°ÑÐ¸Ð¸ Ð¿Ð»Ð¾ÑÐ½Ð¾ÑÑÐ¸
ÑÐ¾ÐºÐ°Ð¼Ð°Ðº "ÐÐ»Ð¾Ð±ÑÑ-Ð2"
Ð¾Ð±ÑÐ°ÑÐ½Ð¾Ðµ ÑÐ°ÑÑÐµÑÐ½Ð¸Ðµ
Ð±Ð¾ÑÐ½Ð¾Ð²ÑÐºÐ¾Ðµ Ð¿ÑÐ¸Ð±Ð»Ð¸Ð¶ÐµÐ½Ð¸Ðµ
Ð³Ð¸ÑÐ¾ÐºÐ¸Ð½ÐµÑÐ¸ÑÐµÑÐºÐ¾Ðµ Ð¼Ð¾Ð´ÐµÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ
Ð²Ð¾Ð»Ð½Ð¾Ð²Ð¾Ðµ ÑÐ°Ð·ÑÐµÑÐµÐ½Ð¸Ðµ
Ð¿ÑÐ¾ÑÑÑÐ°Ð½ÑÑÐ²ÐµÐ½Ð½Ð¾Ðµ ÑÐ°Ð·ÑÐµÑÐµÐ½Ð¸Ðµ.
Doppler reflectometry
turbulence
density fluctuations
"Globus-M2" tokamak
backscattering
Born approximation
gyrokinetic modeling
wave resolution
spatial resolution.

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description: The subject of the graduate qualification work is Â«Application of synthetic diagnostics of Doppler backscattering to investigation of density fluctuations on the tokamak "Globus-M2"Â».This work is devoted to the development of synthetic diagnostics of Doppler backscattering for the study of density fluctuations on the "Globus-M2" tokamak. The main task of using synthetic diagnostics is to achieve the correct interpretation of experimental data. The signal is synthesized in the Born approximation, when the fluctuations are a small perturbation of the background density and the scattering can be considered linear. The simulation is based on the calculation of a two-dimensional spatial weight function in the Born approximation. Within the framework of this approximation, an expression is determined for a complex quadrature signal with density fluctuations for given probing parameters. In this paper, a phenomenological perturbation model has been developed that has a periodic structure with distinguished wave vectors. Based on such a test disturbance, the spatial and wave resolution of diagnostics for the "Globus-M2" tokamak was obtained. Using the gyrokinetic and peeling-ballooning models of fluctuations, the detector signals and the spectra of these signals are calculated. The results of the work in the future will be used to compare the data of synthetic and experimental Doppler reflectometry diagnostics. Also, this calculation will make it possible to better interpret experimental diagnostic data, design Doppler reflectometry diagnostics for new installations, and check full-wave codes in the case of linear scattering.