Overview of recent TJ-II stellarator results

被引：15

作者：

Ascasibar, E. ^{[1
]}

Alba, D. ^{[1
]}

Alegre, D. ^{[1
]}

Alonso, A. ^{[1
]}

Alonso, J. ^{[1
]}

de Aragon, F. ^{[1
]}

Baciero, A. ^{[1
]}

Barcala, J. M. ^{[2
]}

Blanco, E. ^{[1
]}

Botija, J. ^{[1
]}

Bueno, L. ^{[1
]}

Cabrera, S. ^{[1
]}

de la Cal, E. ^{[1
]}

Calvo, I ^{[1
]}

Cappa, A. ^{[1
]}

Carralero, D. ^{[1
]}

Carrasco, R. ^{[1
]}

Carreras, B. ^{[3
]}

Castejon, F. ^{[1
]}

Castro, R. ^{[1
]}

de Castro, A. ^{[1
]}

Catalan, G. ^{[1
]}

Chmyga, A. A. ^{[4
]}

Chamorro, M. ^{[1
]}

Cooper, A. W. ^{[5
]}

Dinklage, A. ^{[6
]}

Eliseev, L. ^{[7
]}

Estrada, T. ^{[1
]}

Ezzat, M. ^{[1
]}

Fernandez-Marina, F. ^{[1
]}

Fontdecaba, J. M. ^{[1
]}

Garcia, L. ^{[3
]}

Garcia-Cortes, I ^{[1
]}

Garcia-Gomez, R. ^{[1
]}

Garcia-Regana, J. M. ^{[1
]}

Gonzalez-Jerez, A. ^{[1
]}

Grenfell, G. ^{[8
]}

Guasp, J. ^{[1
]}

Hernandez-Sanchez, J. ^{[1
]}

Hernanz, J. ^{[1
]}

Hidalgo, C. ^{[1
]}

Hollmann, E. ^{[9
]}

Jimenez-Denche, A. ^{[1
]}

Khabanov, P. ^{[7
]}

Kharchev, N. ^{[10
]}

Kirpitchev, I ^{[1
]}

Kleiber, R. ^{[6
]}

Kozachek, A. S. ^{[4
]}

Krupnik, L. ^{[4
]}

Lapayese, F. ^{[1
]}

机构：

[1] CIEMAT, Natl Fus Lab, Madrid, Spain

[2] CIEMAT, Dept Technol, Madrid, Spain

[3] Univ Carlos III, Madrid, Spain

[4] NSC KIPT Kharkov, Inst Plasma Phys, Kharkov, Ukraine

[5] SAFE, Vers Leglise, Switzerland

[6] Max Planck Inst Plasma Phys, Greifswald, Germany

[7] Natl Res Ctr, Kurchatov Inst, Moscow, Russia

[8] Univ Padua, Ist Nazl Fis Nucl, Consorzio RFX, CNR,ENEA,Acciaierie Venete SpA, Padua, Italy

[9] Univ Calif San Diego, San Diego, CA 92103 USA

[10] Russian Acad Sci, Gen Phys Inst, Moscow, Russia

[11] ENN Energy Res Inst, Langfang, Hebei, Peoples R China

[12] Natl Inst Fus Sci, Toki, Gifu, Japan

[13] Kyoto Univ, Inst Adv Energy, Uji, Kyoto, Japan

[14] Univ Oxford, Rudolf Peierls Ctr Theoret Phys, Oxford, England

[15] Max Planck Inst Plasma Phys, Garching, Germany

[16] Univ Lisbon, IPFN, Inst Super Tecn, Lisbon, Portugal

来源：

NUCLEAR FUSION | 2019年 / 59卷 / 11期

关键词：

stellarator; impurity transport; gyrokinetic simulations; electric fields; turbulence; Alfvenic activity; liquid metal plasma facing components; PELLET-INJECTOR; PROPAGATION;

D O I：

10.1088/1741-4326/ab205e

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 main results obtained in the TJ-II stellarator in the last two years are reported. The most important topics investigated have been modelling and validation of impurity transport, validation of gyrokinetic simulations, turbulence characterisation, effect of magnetic configuration on transport, fuelling with pellet injection, fast particles and liquid metal plasma facing components. As regards impurity transport research, a number of working lines exploring several recently discovered effects have been developed: the effect of tangential drifts on stellarator neoclassical transport, the impurity flux driven by electric fields tangent to magnetic surfaces and attempts of experimental validation with Doppler reflectometry of the variation of the radial electric field on the flux surface. Concerning gyrokinetic simulations, two validation activities have been performed, the comparison with measurements of zonal flow relaxation in pellet-induced fast transients and the comparison with experimental poloidal variation of fluctuations amplitude. The impact of radial electric fields on turbulence spreading in the edge and scrape-off layer has been also experimentally characterized using a 2D Langmuir probe array. Another remarkable piece of work has been the investigation of the radial propagation of small temperature perturbations using transfer entropy. Research on the physics and modelling of plasma core fuelling with pellet and tracer-encapsulated solid-pellet injection has produced also relevant results. Neutral beam injection driven Alfvenic activity and its possible control by electron cyclotron current drive has been examined as well in TJ-II. Finally, recent results on alternative plasma facing components based on liquid metals are also presented.

引用

页数：13

共 69 条

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