Development of a real-time algorithm for detection of the divertor detachment radiation front using multi-spectral imaging

被引：21

作者：

Ravensbergen, T. ^{[1
,2
]}

van Berkel, M. ^{[1
]}

Silburn, S. A. ^{[3
]}

Harrison, J. R. ^{[3
]}

Perek, A. ^{[1
]}

Verhaegh, K. ^{[3
]}

Vijvers, W. A. J. ^{[1
,5
]}

Theiler, C. ^{[4
]}

Kirk, A. ^{[3
]}

de Baar, M. R. ^{[1
,2
]}

机构：

[1] DIFFER Dutch Inst Fundamental Energy Res, De Zaale 20, NL-5612 AJ Eindhoven, Netherlands

[2] Eindhoven Univ Technol, Dept Mech Engn, Control Syst Technol Grp, POB 513, NL-5600 MB Eindhoven, Netherlands

[3] Culham Sci Ctr, CCFE, Abingdon OX14 3DB, Oxon, England

[4] Ecole Polytech Fed Lausanne EPFL, Swiss Plasma Ctr SPC, CH-1015 Lausanne, Switzerland

[5] Chromodynam BV, High Tech Campus 12, NL-5656 AE Eindhoven, Netherlands

来源：

NUCLEAR FUSION | 2020年 / 60卷 / 06期

基金：

瑞士国家科学基金会;

关键词：

divertor detachment; multispectral imaging; real-time analysis; tokamak; RECONSTRUCTION; POWER;

D O I：

10.1088/1741-4326/ab8183

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：

In this paper we present a novel algorithm to extract the optical plasma boundary and radiation front for detached divertor plasmas. We show that reliable detection of the divertor leg and radiation front is possible using lightweight image processing tools. Using a non-tomographic approach, the detected divertor leg and radiation front can be mapped to the poloidal plane. This approach is fast and accurate enough for real-time control purposes, allowing in particular real-time plasma shape and detachment control, and post-shot detachment physics and dynamics analysis.

引用

页数：10

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