Options for Implementation of IR Thermography Diagnostics in a Tokamak with Reactor Technologies TRT

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Abstract

AbstractOptions for implementing the IR thermography diagnostic system in a TRT facility are considered. Two variants of the optical scheme for measuring the temperature of the first wall and divertor targets are proposed: a wide-angle system combined with two divertor channels and a four-channel viewing system. The optical resolution of both systems and the levels of the collected signal are numerically simulated. On the basis of the calculations performed, conclusions are drawn about the compliance of the systems with the requirements for measuring the temperature of TRT plasma-facing elements. The sources of the temperature measurement error are considered, and the error caused by the reflection of radiation from structural plasma-facing elements by the surface under study is estimated. Calibration issues for IR thermography diagnostics are also discussed.

About the authors

A. G. Razdobarin

Ioffe Institute, Russian Academy of Sciences; Spectral-Tech

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

Y. R. Shubin

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

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

O. S. Medvedev

Ioffe Institute, Russian Academy of Sciences; Spectral-Tech

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

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

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