Laser-Induced Quenching Diagnostics of T-15MD Divertor Plasma
- 作者: Krivoruchko D.1,2, Gorbunov A.1, Pshenov A.1,3, Panfilov D.1,3
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隶属关系:
- National Research Centre “Kurchatov Institute”
- Moscow Institute of Physics and Technology (Research University)
- National Research Nuclear University “MEPhI”
- 期: 卷 49, 编号 6 (2023)
- 页面: 545-557
- 栏目: ТОКАМАКИ
- URL: https://journals.rcsi.science/0367-2921/article/view/139557
- DOI: https://doi.org/10.31857/S0367292123600152
- EDN: https://elibrary.ru/WYGLTG
- ID: 139557
如何引用文章
详细
Diagnostics based on laser-induced quenching (LIQ) and laser-induced fluorescence (LIF) is planned to be used at the T-15MD tokamak for local measurements of the atomic hydrogen density na(HI) in divertor plasma. Both physical and technical aspects of the diagnostic system development are considered. For plasma diagnostic, it is proposed to use the time-modulated thulium fiber laser with the wavelength of 1875 nm and peak power of 5 W. Two light collection systems will be used for observing the signals. The intravacuum and “atmospheric” systems will be used for performing measurements in the region of the separatrix strike-point and in the rest of the divertor region, respectively. Using the modified collisional-radiative model, the applicability of the diagnostics was physically justified by the calculations of the expected quenching and fluorescence signals, as well as the background radiation at the wavelengths of hydrogen lines. In the calculations, the 2D-distributions of plasma parameters are used obtained by the SOLPS 4.3 code for tokamak operation scenarios with and without additional plasma heating. When using the LIQ method, the expected errors in measuring the na(HI) density are within 10% for most points and do not exceed 25% for all scenarios of tokamak operation considered, provided that the signals are averaged over 10 ms. The LIF method makes it possible to carry out measurements with relative errors up to 50%.
作者简介
D. Krivoruchko
National Research Centre “Kurchatov Institute”; Moscow Institute of Physics and Technology (Research University)
Email: daria.krivoruchko@phystech.edu
123098, Moscow, Russia; 141700, Dolgoprudny, Moscow oblast, Russia
A. Gorbunov
National Research Centre “Kurchatov Institute”
Email: daria.krivoruchko@phystech.edu
123098, Moscow, Russia
A. Pshenov
National Research Centre “Kurchatov Institute”; National Research Nuclear University “MEPhI”
Email: daria.krivoruchko@phystech.edu
123098, Moscow, Russia; 115409, Moscow, Russia
D. Panfilov
National Research Centre “Kurchatov Institute”; National Research Nuclear University “MEPhI”
编辑信件的主要联系方式.
Email: daria.krivoruchko@phystech.edu
123098, Moscow, Russia; 115409, Moscow, Russia
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