Synthetic Diagnostic of Spectra of Charge-Exchange Atoms for Analysis of Influence of the MHD Instability on Fast-Particle Confinement in Spherical Tokamaks Globus-M/M2

E. O. Kiselev, I. M. Balachenkov, N. N. Bakharev, V. I. Varfolomeev,A. V. Voronin,V. Yu. Goryainov, V. K. Gusev, N. S. Zhiltsov, O. A. Zenkova, G. S. Kurskiev,A. D. Melnik, V. B. Minaev, I. V. Miroshnikov, M. I. Patrov,Yu. V. Petrov,N. V. Sakharov, O. M. Skrekel, A. Yu. Telnova, E. E. Tkachenko, V. A. Tokarev, E. A. Tukhmeneva, N. A. Khromov, F. V. Chernyshov,P. B. Shchegolev

Plasma Physics Reports（2023）

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摘要

Absorbed power of the neutral-injection beam in spherical tokamaks Globus-M/M2 is estimated numerically. Deceleration of fast particles is simulated by means of the NUBEAM code. The signal of analyzer of charge-exchange atoms is simulated by means of the FIDASIM code using the distribution function of fast ions calculated by means of the NUBEAM code. Comparison of calculated and experimental signals allowed determining the degree of influence of instabilities on confinement of fast particles along with absorbed beam power.

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关键词

spherical tokamak,high-temperature plasma,neutral particle beams,charge exchange atom analyzer,FIDASIM,NUBEAM

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