Real time detection of multiple stable MHD eigenmode growth rates towards kink/tearing modes avoidance in DIII-D tokamak plasmas

被引：1

作者：

Liu, T. ^{[1
]}

Munaretto, S. ^{[2
]}

Logan, N. C. ^{[3
]}

Wang, Z. R. ^{[2
]}

Boyer, M. D. ^{[4
]}

Wang, Z. X. ^{[1
]}

Keith, E. ^{[2
]}

Park, J. -k. ^{[2
]}

机构：

[1] Dalian Univ Technol, Sch Phys, Key Lab Mat Modificat Beams, Minist Educ, Dalian 116024, Peoples R China

[2] Princeton Plasma Phys Lab, Princeton, NJ 08543 USA

[3] Lawrence Livermore Natl Lab, Irvine, CA 94550 USA

[4] Commonwealth Fus Syst, Devens, MA 01434 USA

来源：

NUCLEAR FUSION | 2024年 / 64卷 / 01期

基金：

中国国家自然科学基金;

关键词：

real time detection; 3D MHD spectroscopy; multi-mode stability; disruption avoidance;

D O I：

10.1088/1741-4326/ad0bce

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：

Real time detection of time evolving growth rates of multiple stable magnetohydrodynamic (MHD) eigenmodes has been achieved in DIII-D tokamak experiments via multi-mode three-dimensional (3D) active MHD spectroscopy. The measured evolution of the multi-modes' growth rates is in good accordance with the variation of the plasma beta N . Using experimental equilibria, resistive MARS-F simulations found the two least stable modes to have comparable growth rates to those experimentally measured. Real time and offline calculations of the modes' growth rates show comparable results and indicate that cleaner system input and output signals will improve the accuracy of the real time stability detection. Moreover, the shortest real time updating time window of multi-mode eigenvalues can be about 2 ms in DIII-D experiments. This real time monitoring of stable, macroscopic kink and tearing modes thus provides an effective tool for avoidance of the most common causes of tokamak disruption.

引用

页数：10

共 5 条

[1] Identification of multiple eigenmode growth rates towards real time detection in DIII-D and KSTAR tokamak plasmas
Liu, T.
Wang, Z. R.
Boyer, M. D.
Munaretto, S.
Wang, Z. X.
Park, B. -H.
Logan, N. C.
Yang, S. M.
Park, J. -K.
NUCLEAR FUSION, 2021, 61 (05)
[2] Identification of multiple eigenmode growth rates in DIII-D and EAST tokamak plasmas
Wang, Z. R.
Logan, N. C.
Munaretto, S.
Liu, Y. Q.
Sun, Y. W.
Gu, S.
Park, J-K
Hanson, J. M.
Hu, Q. M.
Strait, T.
Nazikian, R.
Kolemen, E.
Menard, J. E.
NUCLEAR FUSION, 2019, 59 (02)
[3] Role of edge-localized neoclassical tearing modes in quiescent H-mode plasmas in the DIII-D tokamak
Hu, Q. M.
Nazikian, R.
Chen, X.
Yu, Q.
Austin, M. E.
Bortolon, A.
Ernst, D.
Haskey, S. R.
Park, J. -k.
Yan, Z.
Yu, G. Y.
PHYSICS OF PLASMAS, 2023, 30 (02)
[4] Advanced control of neoclassical tearing modes in DIII-D with real-time steering of the electron cyclotron current drive
Welander, A. S.
Kolemen, E.
La Haye, R. J.
Eidietis, N. W.
Humphreys, D. A.
Lohr, J.
Noraky, S.
Penaflor, B. G.
Prater, R.
Turco, F.
PLASMA PHYSICS AND CONTROLLED FUSION, 2013, 55 (12)
[5] Real-Time Magnetic Sensor Anomaly Detection Using Autoencoder Neural Networks on the DIII-D Tokamak
Anand, H.
Sammuli, B. S.
Olofsson, K. E. J.
Humphreys, D. A.
IEEE TRANSACTIONS ON PLASMA SCIENCE, 2022, 50 (11) : 4126 - 4130

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