Tomography diagnostic of plasma radiated power on the spherical tokamak Globus-M

被引：9

作者：

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

Alekseev, A. G. ^{[2
]}

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

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

Khromov, N. A. ^{[1
]}

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

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

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

Petrov, Yu. V. ^{[1
]}

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

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

Solokha, V. V. ^{[1
]}

Telnova, A. Yu. ^{[1
]}

Tolstyakov, S. Yu. ^{[1
]}

Zabrodsky, V. V. ^{[1
]}

机构：

[1] Ioffe Inst, St Petersburg 194021, Russia

[2] SRC RF TRINITI, Moscow 142190, Russia

来源：

REVIEW OF SCIENTIFIC INSTRUMENTS | 2018年 / 89卷 / 08期

基金：

俄罗斯科学基金会; 俄罗斯基础研究基金会;

关键词：

X-RAY TOMOGRAPHY; SILICON; RECONSTRUCTION;

D O I：

10.1063/1.5039801

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

A diagnostic system for plasma radiated power tomography on Globus-M was upgraded with a new linear array based on silicon photodiodes. The hardware of the diagnostic system based on a 256-channel tangential matrix array and a 24-channel linear array is described. The algorithm for 2D tomographic reconstruction of plasma emissivity is presented. It uses the Tikhonov regularization method and anisotropic diffusion functional as a side constraint. Simulated plasma emissivity profiles were used to test and assess the capabilities of the developed algorithm. Data analysis was carried out in ohmic and neutral beam heated discharges to demonstrate the performance of the tomography diagnostic in plasmas with different parameters. The presented results illustrate the proper functioning of the tomography system that allowed to reveal and study various plasma phenomena, including magnetohydrodynamic mode. Published by AIP Publishing.

引用

页数：9

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