Gyrokinetic simulations of electrostatic microturbulence in ADITYA-U tokamak

被引：4

作者：

Singh, Tajinder ^{[1
]}

Sharma, Deepti ^{[2
]}

Macwan, Tanmay ^{[2
]}

Sharma, Sarveshwar ^{[2
,3
]}

Ghosh, Joydeep ^{[2
,3
]}

Sen, Abhijit ^{[2
,3
]}

Lin, Zhihong ^{[4
]}

Kuley, Animesh ^{[1
]}

机构：

[1] Indian Inst Sci, Dept Phys, Bangalore 560012, India

[2] Inst Plasma Res, Bhat 382428, Gandhinagar, India

[3] Homi Bhabha Natl Inst, Mumbai 400094, Maharashtra, India

[4] Univ Calif Irvine, Dept Phys & Astron, Irvine, CA 92697 USA

来源：

NUCLEAR FUSION | 2023年 / 63卷 / 05期

关键词：

simulation; gyrokinetic; tokamak; microturbulence; PARTICLE SIMULATION; ZONAL FLOWS; TRANSPORT; PLASMA; FLUCTUATIONS; CONFINEMENT; TURBULENCE;

D O I：

10.1088/1741-4326/acc344

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：

Global gyrokinetic simulations of the electrostatic microturbulence driven by the pressure gradients of thermal ions and electrons are carried out for the ADITYA-U tokamak geometry using its experimental plasma profiles and with collisional effects. The dominant instability is trapped electron mode (TEM) based on the linear eigenmode structure and its propagation in the electron diamagnetic direction. Collisional effects suppress turbulence and transport to a certain extent. Zonal flow is not playing a critical role in the TEM saturation, which is dominated by the inverse cascade. The frequency spectrum of the electrostatic fluctuations is in broad agreement with the experimentally recorded spectrum in the ADITYA-U, with a bandwidth ranging from similar to 0 to 50 kHz.

引用

页数：12

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