Experimental Validation of a Kinetic Ballooning Mode in High-Performance High-Bootstrap Current Fraction Fusion Plasmas

被引：11

作者：

Jian, X. ^{[1
,2
,3
]}

Chen, J. ^{[4
]}

Ding, S. ^{[1
]}

Garofalo, A. ^{[1
]}

Gong, X. ^{[2
]}

Holland, C. ^{[3
]}

Huang, J. ^{[2
]}

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

Qin, X. ^{[5
]}

Yu, G. ^{[6
]}

Ma, R. R. ^{[7
]}

Du, X. ^{[1
]}

Hong, R. ^{[4
]}

Staebler, G. ^{[1
]}

Wang, H. ^{[1
]}

Yan, Z. ^{[5
]}

Bass, E. ^{[3
]}

Brower, D. ^{[4
]}

Ding, W. ^{[4
]}

Orlov, D. ^{[3
]}

机构：

[1] Gen Atom, POB 85608, San Diego, CA 92186 USA

[2] Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Anhui, Peoples R China

[3] Univ Calif San Diego, La Jolla, CA 92093 USA

[4] Univ Calif Los Angeles, Los Angeles, CA 90095 USA

[5] Univ Wisconsin Madison, Madison, WI 53706 USA

[6] Univ Calif Davis, Davis, CA 95616 USA

[7] Southwestern Inst Phys, POB 432, Chengdu 610041, Peoples R China

来源：

PHYSICAL REVIEW LETTERS | 2023年 / 131卷 / 14期

关键词：

INTERNAL TRANSPORT BARRIER; SELF-SUSTAINED TURBULENCE; PHYSICS BASIS; ARBITRARY COLLISIONALITY; TOKAMAK; SIMULATIONS; CONFINEMENT; FACILITY; DESIGN; PLANT;

D O I：

10.1103/PhysRevLett.131.145101

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report the observation of a set of coherent high frequency electromagnetic fluctuations that leads to a turbulence induced self-regulating phenomenon in the DIII-D high bootstrap current fraction plasma. The fluctuations have frequency of 130-220 kHz, the poloidal wavelength and phase velocity are 16-30 m-1 and similar to 30 km=s, respectively, in the outboard midplane with the estimated toroidal mode number n similar to 5 - 9. The fluctuations are located in the internal transport barrier (ITB) region at large radius and are experimentally validated to be kinetic ballooning modes (KBM). Quasilinear estimation predicts the KBM to be able to drive experimental particle flux and non-negligible thermal flux, suggesting its significant role in regulating the ITB saturation.

引用

页数：6

共 66 条

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