Real-time feedback system for divertor heat flux control at COMPASS tokamak

被引：10

作者：

Khodunov, I ^{[1
,2
,3
,4
]}

Komm, M. ^{[1
]}

Havranek, A. ^{[1
]}

Adamek, J. ^{[1
]}

Bohm, P. ^{[1
]}

Cavalier, J. ^{[1
]}

Seidl, J. ^{[1
]}

Devitre, A. ^{[2
]}

Dimitrova, M. ^{[1
]}

Elmore, S. ^{[5
]}

Faitsch, M. ^{[6
]}

Hacek, P. ^{[1
,7
]}

Havlicek, J. ^{[1
]}

Hron, M. ^{[1
]}

Imrisek, M. ^{[1
,7
]}

Krbec, J. ^{[1
,8
]}

Peterka, M. ^{[1
,6
]}

Panek, R. ^{[1
]}

Samoylov, O. ^{[9
]}

Tomes, M. ^{[1
,7
]}

Tomova, K. ^{[10
]}

Vondracek, P. ^{[1
,6
]}

Weinzettl, V ^{[1
]}

机构：

[1] CAS, Inst Plasma Phys, Slovankou 3, Prague 18200 8, Czech Republic

[2] Univ Ghent, Dept Appl Phys, Ghent, Belgium

[3] Ioffe Inst, St Petersburg, Russia

[4] Peter Great Polytech Univ, St Petersburg, Russia

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

[6] Max Planck Inst Plasma Phys, D-85748 Garching, Germany

[7] Charles Univ Prague, Fac Math & Phys, V Holesovickach 2, Prague 18000 8, Czech Republic

[8] Czech Tech Univ, FNSPE, Brehova 7, Czech Republic

[9] Aix Marseille Univ, Marseille, France

[10] Univ Lorraine, Nancy, France

来源：

PLASMA PHYSICS AND CONTROLLED FUSION | 2021年 / 63卷 / 06期

关键词：

plasma; tokamak; detachment; nitrogen; divertor; heat flux; H-MODE; LOAD;

D O I：

10.1088/1361-6587/abf03e

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：

The reduction of the incident heat flux onto the divertor will be a necessity for the future thermonuclear reactors. Impurity seeding is recognized as an efficient way to achieve the partial detachment regime, which allows to dissipate a large fraction of power flux by radiation. This paper presents a heat flux real-time feedback system (RTFS) based on impurity seeding controlled by a combined ball-pen and Langmuir probe divertor array in the COMPASS tokamak. A number of features of the system have been studied, such as the type of impurity, seeding location, constants used in the real-time controller and the diagnostic selections. A detailed description of the designed RTFS and the results of the implementation are presented. The findings confirm the applicability of the RTFS for reduction and control of the divertor heat fluxes. Another important implication of this research is the ability of installing such systems in next-step devices.

引用

页数：8

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