Dynamics of the LH-transition in TUMAN-3M tokamak in the scenarios with cryogenic pellet injection

被引：13

作者：

Belokurov, A. A. ^{[1
]}

Askinazi, L. G. ^{[1
]}

Chone, L. ^{[2
]}

Gusakov, E. Z. ^{[1
]}

Kiviniemi, T. P. ^{[2
]}

Kornev, V. A. ^{[1
]}

Korpilo, T. ^{[2
]}

Krikunov, S. V. ^{[1
]}

Lebedev, S. V. ^{[1
]}

Leerink, S. ^{[2
]}

Niskala, P. ^{[2
]}

Rochford, R. ^{[2
]}

Smirnov, A. I. ^{[1
]}

Tukachinsky, A. S. ^{[1
]}

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

机构：

[1] Ioffe Inst, St Petersburg, Russia

[2] Aalto Univ, Espoo, Finland

来源：

NUCLEAR FUSION | 2018年 / 58卷 / 11期

基金：

俄罗斯科学基金会; 芬兰科学院;

关键词：

tokamak; LH-transition; pellet injection; turbulence; radial electric field; H-MODE; TRANSPORT BARRIERS; POLOIDAL ROTATION; PLASMAS; SIMULATIONS;

D O I：

10.1088/1741-4326/aac4e9

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 the experiments on tangential fuel pellet injection in the TUMAN-3M tokamak an initiation of LH-transition or, in several scenarios-temporal (1-2 ms) confinement improvement with the following backwards transition was observed. To understand the possibility of the transitions, a model calculating the evolution of density and ion temperature profiles under the effect of source profile perturbation and plasma cooling created by pellet evaporation was developed. In the model, a diffusion coefficient depending on radial electric field shear value was used. Turbulence parameters are defined using a gyrokinetic simulation of the experiments with ELMFIRE code. Modeling results are in good agreement with experiments. Using the data obtained from the modeling, non-linear particle flux dependency on density gradient was analyzed; the existence of two stabile solutions for two confinement modes dependent on particle flux value was proved, in agreement with experiments.

引用

页数：9

共 28 条

[1] Gyrokinetic simulation of transport reduction by pellet injection in TUMAN-3M tokamak
Kiviniemi, T. P.
Niskala, P.
Askinazi, L. G.
Belokurov, A. A.
Chone, L.
Gurchenko, A. D.
Gusakov, E. Z.
Korpilo, T.
Lebedev, S. V.
Leerink, S.
Rochford, R.
Tukachinsky, A. S.
PLASMA PHYSICS AND CONTROLLED FUSION, 2018, 60 (08)
[2] The possibility of geodesic acoustic mode-initiated LH-transition in the TUMAN-3M tokamak
L. G. Askinazi
A. A. Belokurov
Technical Physics Letters, 2015, 41 : 1080 - 1082
[3] The possibility of geodesic acoustic mode-initiated LH-transition in the TUMAN-3M tokamak
Askinazi, L. G.
Belokurov, A. A.
TECHNICAL PHYSICS LETTERS, 2015, 41 (11) : 1080 - 1082
[4] Geodesic Acoustic Mode Temporal Parameters Effect on the LH-Transition Initiation Possibility in TUMAN-3M Tokamak
Belokurov, A. A.
Abdullina, G. I.
Askinazi, L. G.
Bulanin, V. V.
Zhubr, N. A.
Kornev, V. A.
Krikunov, S. V.
Lebedev, S. V.
Petrov, A. V.
Razumenko, D. V.
Tukachinsky, A. S.
Yashin, A. Yu.
TECHNICAL PHYSICS LETTERS, 2019, 45 (08) : 783 - 785
[5] Geodesic Acoustic Mode Temporal Parameters Effect on the LH-Transition Initiation Possibility in TUMAN-3M Tokamak
A. A. Belokurov
G. I. Abdullina
L. G. Askinazi
V. V. Bulanin
N. A. Zhubr
V. A. Kornev
S. V. Krikunov
S. V. Lebedev
A. V. Petrov
D. V. Razumenko
A. S. Tukachinsky
A. Yu. Yashin
Technical Physics Letters, 2019, 45 : 783 - 785
[6] GAM observation in the TUMAN-3M tokamak
Bulanin, V. V.
Askinazi, L. G.
Belokurov, A. A.
Kornev, V. A.
Lebedev, V.
Petrov, A. V.
Tukachinsky, A. S.
Vildjunas, M. I.
Wagner, F.
Yashin, A. Yu
PLASMA PHYSICS AND CONTROLLED FUSION, 2016, 58 (04)
[7] Counter-NBI assisted LH transition in low density plasmas in the TUMAN-3M
Lebedev, S. V.
Askinazi, L. G.
Chernyshev, F. V.
Irzak, M. A.
Kornev, V. A.
Krikunov, S. V.
Melnik, A. D.
Razumenko, D. V.
Rozhdestvensky, V. V.
Smirnov, A. I.
Tukachinsky, A. S.
Vild'junas, M. I.
Zhubr, N. A.
NUCLEAR FUSION, 2009, 49 (08)
[8] Particle source and radial electric field shear as the factors affecting the LH-transition possibility and dynamics in a tokamak
Belokurov, A. A.
Abdullina, G., I
Askinazi, L. G.
Bulanin, V. V.
Chone, L.
Gurchenko, A. D.
Gusakov, E. Z.
Kiviniemi, T. P.
Kornev, V. A.
Krikunov, S., V
Kouprienko, D., V
Lashkul, S., I
Lebedev, S., V
Leerink, S.
Niskala, P.
Petrov, A., V
Razumenko, D., V
Tukachinsky, A. S.
Yashin, A. Yu
Zhubr, N. A.
PHYSICA SCRIPTA, 2020, 95 (11)
[9] The Influence of Fast Particles on Plasma Rotation in the TUMAN-3M Tokamak
Yashin, Alexander
Belokurov, Alexander
Askinazi, Leonid
Petrov, Alexander
Ponomarenko, Anna
ATOMS, 2022, 10 (04)
[10] Study of runaway electrons in TUMAN-3M tokamak plasmas
Shevelev, A.
Khilkevitch, E.
Tukachinsky, A.
Pandya, S.
Askinazi, L.
Belokurov, A.
Chugunov, I.
Doinikov, D.
Gin, D.
Iliasova, M.
Kiptily, V.
Kornev, V.
Lebedev, S.
Naidenov, V.
Plyusnin, V.
Polunovsky, I.
Zhubr, N.
PLASMA PHYSICS AND CONTROLLED FUSION, 2018, 60 (07)

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