HYDROGEN ISOTOPES IN THE GLOBUS-M2 TOKAMAK WALL

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Mock-up of the system for remote monitoring of the accumulation of hydrogen isotopes in the walls of the Globus-M2 tokamak was assembled and tested. The measurements were performed using the LIA-QMS laser diagnostics (laser-induced ablation with registration using quadrupole mass-spectrometry). The data were obtained on the content of hydrogen isotopes in deposits appearing after exposing tungsten collectors to the loads in the volume of the GlobusMtokamak. After testing the diagnostics under laboratory conditions, it was mounted at the Globus-M2 facility. In-situ measurements of the content of hydrogen isotopes in the graphite tiles of the tokamak divertor were performed. The possibility of combining the LIA-QMS diagnostics with the LIBS (laser-induced emission spectroscopy) diagnostics has been confirmed, in order to obtain information on the composition of the ablated material. In addition, the LIBS method was used for obtaining the deuterium/protium isotopic ratio during measurements in the Globus-M2 facility.

Sobre autores

A. Razdobarin

Ioffe Institute, Russian Academy of Sciences; Department of Physics, St. Petersburg State University

Email: aleksey.razdobarin@mail.ioffe.ru
St. Petersburg, Russia; St. Petersburg, Russia

O. Medvedev

Ioffe Institute, Russian Academy of Sciences; National Research Nuclear University “MEPhI”

St. Petersburg, Russia; Moscow, Russia

I. Bukreev

Ioffe Institute, Russian Academy of Sciences

St. Petersburg, Russia

D. Bogachev

Ioffe Institute, Russian Academy of Sciences

St. Petersburg, Russia

A. Dmitriev

Ioffe Institute, Russian Academy of Sciences

St. Petersburg, Russia

D. Elets

Ioffe Institute, Russian Academy of Sciences; Department of Physics, St. Petersburg State University

St. Petersburg, Russia; St. Petersburg, Russia; Moscow, Russia

E. Smirnova

Ioffe Institute, Russian Academy of Sciences; Department of Physics, St. Petersburg State University

St. Petersburg, Russia; St. Petersburg, Russia

L. Snigirev

Ioffe Institute, Russian Academy of Sciences; Department of Physics, St. Petersburg State University

St. Petersburg, Russia; St. Petersburg, Russia

V. Minaev

Ioffe Institute, Russian Academy of Sciences

St. Petersburg, Russia

A. Novokhatsky

Ioffe Institute, Russian Academy of Sciences

St. Petersburg, Russia

I. Miroshnikov

Ioffe Institute, Russian Academy of Sciences

St. Petersburg, Russia

S. Filippov

Ioffe Institute, Russian Academy of Sciences

St. Petersburg, Russia

M. Grishaev

National Research Nuclear University “MEPhI”

Moscow, Russia

Yu. Gasparyan

Department of Physics, St. Petersburg State University; National Research Nuclear University “MEPhI”

St. Petersburg, Russia; Moscow, Russia

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