First Experiments on Reduction the Heat Load on the Divertor Plates
of the Globus-M2 Tokamak Using Nitrogen Seeding
and Their Comparison with Simulation Results

N. S. Zhiltsov; Жильцов Н. С.; E. O. Kiselev; Киселев Е. О.; G. S. Kurskiev; Курскиев Г. С.; V. B. Minaev; Минаев В. Б.; I. V. Miroshnikov; Мирошников И. В.; P. A. Molchanov; Молчанов П. А.; A. N. Novokhatsky; Новохацкий А. Н.; Yu. V. Petrov; Петров Ю. В.; V. A. Rozhansky; Рожанский В. А.; N. V. Sakharov; Сахаров Н. В.; A. Yu. Telnova; Тельнова А. Ю.; V. M. Timokhin; Тимохин В. М.; E. E. Tkachenko; Ткаченко Е. Е.; V. A. Tokarev; Токарев В. А.; E. A. Tukhmeneva; Тюхменева Е. А.; P. B. Shchegolev; Щеголев П. Б.; N. A. Khromov; Хромов Н. А.; N. N. Bakharev; Бахарев Н. Н.; E. O. Vekshina; Векшина Е. О.; V. K. Gusev; Гусев В. К.; K. V. Dolgova; Долгова К. В.

doi:10.31857/S0367292123601029

First Experiments on Reduction the Heat Load on the Divertor Plates of the Globus-M2 Tokamak Using Nitrogen Seeding and Their Comparison with Simulation Results

Authors: Zhiltsov N.S.¹, Kiselev E.O.¹, Kurskiev G.S.¹, Minaev V.B.¹, Miroshnikov I.V.¹, Molchanov P.A.², Novokhatsky A.N.¹, Petrov Y.V.¹, Rozhansky V.A.³, Sakharov N.V.¹, Telnova A.Y.¹, Timokhin V.M.³, Tkachenko E.E.¹, Tokarev V.A.¹, Tukhmeneva E.A.¹, Shchegolev P.B.¹, Khromov N.A.¹, Bakharev N.N.¹, Vekshina E.O.³, Gusev V.K.¹, Dolgova K.V.³
Affiliations:
1. Ioffe Institute, Russian Academy of Sciences
2. Peter the Great Saint Petersburg Polytechnic University
3. Peter the Great St. Petersburg Polytechnic University
Issue: Vol 49, No 12 (2023)
Pages: 1327-1336
Section: ТОКАМАКИ
URL: https://journals.rcsi.science/0367-2921/article/view/233142
DOI: https://doi.org/10.31857/S0367292123601029
EDN: https://elibrary.ru/CFFAWX
ID: 233142

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Abstract
About the authors
References
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Abstract

At the compact spherical Globus-M2 tokamak, a series of experiments was conducted to study the
effect of the injection of nitrogen on the discharge parameters. The experiments were carried out in discharges
in deuterium in the divertor configuration, and the auxiliary heating was performed by deuterium
neutral beam injection. During the nitrogen seeding, a substantial decrease in electron temperature near the
divertor was recorded as well as a sharp decrease of the heat flux onto the divertor plate, while the density and
temperature of the main plasma changed insignificantly. Simulations by the SOLPS-ITER showed a satisfactory
agreement with the experiment.

Keywords

tokamak, divertor, near-wall plasma, Langmuir probes, impurity seeding

References

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