Conceptual Project for Diagnostics of Erosion of the First Wall and Divertor of the Tokamak with Reactor Technologies TRT

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Abstract

A conceptual design for diagnosing erosion of the first wall and divertor plates of a tokamak with reactor technologies TRT is proposed. The principles of constructing a diagnostic complex based on the following systems are developed: laser radar, dual-wavelength digital holographic interferometry and active laser IR thermography. An optical scheme is developed for combining the optical paths to input laser radiation and collect scattered light from diagnostic systems. To view the maximum area of the first wall, a scheme for optical scanning of the surface of the first wall and divertor is proposed. Based on optical simulation, the spatial distribution of the power density and phase of interferometry laser radiation in the illuminated region of the first wall is constructed, and the dimensions of the light fields and power density for IR thermography and laser radar diagnostics are determined. An image formation scheme is proposed and the spatial resolution is determined for interferometry and IR thermography methods. The light scattering function on models of the ITER divertor cladding is studied experimentally. The energy of the collected signal is calculated on the basis on the experimental data for all three diagnostic methods and the requirements for the diagnostic equipment are formulated.

About the authors

A. G. Razdobarin

Ioffe Institute, Russian Academy of Sciences; Spectral-Tech; Immanuel Kant Baltic Federal University

Author for correspondence.
Email: Aleksey.Razdobarin@mail.ioffe.ru
Russian Federation, St. Petersburg, 194021; St. Petersburg, 194223; Kaliningrad, 236041

Y. R. Shubin

Ioffe Institute, Russian Academy of Sciences

Email: Aleksey.Razdobarin@mail.ioffe.ru
Russian Federation, St. Petersburg, 194021

A. A. Belokur

Ioffe Institute, Russian Academy of Sciences

Email: Aleksey.Razdobarin@mail.ioffe.ru
Russian Federation, St. Petersburg, 194021

D. L. Bogachev

Spectral-Tech

Email: Aleksey.Razdobarin@mail.ioffe.ru
Russian Federation, St. Petersburg, 194223

D. I. Elets

Ioffe Institute, Russian Academy of Sciences; Spectral-Tech; Immanuel Kant Baltic Federal University

Email: Aleksey.Razdobarin@mail.ioffe.ru
Russian Federation, St. Petersburg, 194021; St. Petersburg, 194223; Kaliningrad, 236041

O. S. Medvedev

Ioffe Institute, Russian Academy of Sciences; Spectral-Tech; Immanuel Kant Baltic Federal University

Email: Aleksey.Razdobarin@mail.ioffe.ru
Russian Federation, St. Petersburg, 194021; St. Petersburg, 194223; Kaliningrad, 236041

E. E. Mukhin

Ioffe Institute, Russian Academy of Sciences

Email: Aleksey.Razdobarin@mail.ioffe.ru
Russian Federation, St. Petersburg, 194021

L. A. Snigirev

Ioffe Institute, Russian Academy of Sciences

Email: Aleksey.Razdobarin@mail.ioffe.ru
Russian Federation, St. Petersburg, 194021

I. V. Alekseenko

Immanuel Kant Baltic Federal University

Email: Aleksey.Razdobarin@mail.ioffe.ru
Russian Federation, Kaliningrad, 236041

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