Measurement of the fast ion distribution using active NPA diagnostics at the Globus-M2 spherical tokamak

被引：11

作者：

Bakharev, N. N. ^{[1
]}

Balachenkov, I. M. ^{[1
]}

Chernyshev, F., V ^{[1
]}

Gusev, V. K. ^{[1
]}

Kiselev, E. O. ^{[1
]}

Kurskiev, G. S. ^{[1
]}

Melnik, A. D. ^{[1
]}

Minaev, V. B. ^{[1
]}

Mironov, M., I ^{[1
]}

Nesenevich, V. G. ^{[1
]}

Petrov, Yu, V ^{[1
]}

Sakharov, N., V ^{[1
]}

Shchegolev, P. B. ^{[1
]}

Skrekel, O. M. ^{[1
]}

Telnova, A. Yu ^{[1
]}

Tukhmeneva, E. A. ^{[1
]}

Varfolomeev, V., I ^{[1
]}

机构：

[1] Ioffe Inst, St Petersburg 194021, Russia

来源：

PLASMA PHYSICS AND CONTROLLED FUSION | 2021年 / 63卷 / 12期

基金：

俄罗斯科学基金会;

关键词：

NPA; fast ions; energetic ions; COLLECTIVE THOMSON SCATTERING; GAMMA-RAY DIAGNOSTICS; PLASMA;

D O I：

10.1088/1361-6587/ac3497

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

Active NPA measurements of the fast ion distribution using the neutral beam as an additional charge exchange target are discussed. Expressions for the calculation of the NPA signal based on the fast ion distribution and for the reconstruction of the fast ion distribution from the NPA signal are provided. Demonstration of the described approach is carried out on the Globus-M2 spherical tokamak, where a scanning system for the NPAs was recently installed. Main features of the active NPA application on Globus-M2 are considered. The energy and spatial distributions of fast deuterium ions at dedicated pitch angles are obtained and compared with the calculated ones. Key traits of the obtained distributions are considered and explained.

引用

页数：11

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