Results 11 to 20 of about 2,703 (241)

The simulation of ELM suppression by ion cyclotron resonance heating in EAST using BOUT++

Nuclear Fusion, 2022
Abstract Edge localized modes (ELMs) are completely suppressed by ion cyclotron resonant heating (ICRH) during H-mode discharge, which is first observed in the Experimental Advanced Superconducting Tokamak (EAST). The electromagnetic turbulence model in the BOUT++ framework is applied to the simulations, with the aim of obtaining the key
Chu Zhou
exaly   +2 more sources

Unified ELM suppression on KSTAR and DIII-D via adaptive feedback control strategies

Nuclear Fusion
This paper reports on the extension of our amplitude-based resonant magnetic perturbation (RMP) edge localized mode (ELM) controller to support phasing control (relative toroidal phases of RMP waveforms between rows of coils), multiple toroidal mode ...
R. Shousha, S.K. Kim, K.G. Erickson, S.H. Hahn, A.O. Nelson, N.C. Logan, S.M. Yang, Q.M. Hu, R. Wilcox, J.-K. Park, C. Paz-Soldan, A. Battey, M.W. Kim, G. Shin, W.H. Ko, Y.M. Jeon, J.H. Lee, J. Jang, D.C. Seo, J. Abbate, A. Rothstein, E. Kolemen   +21 more
doaj   +2 more sources

Multimodal super-resolution: discovering hidden physics and its application to fusion plasmas [PDF]

Nature Communications
Understanding complex physical systems often requires integrating data from multiple diagnostics, each with limited resolution or coverage. We present a machine learning framework that reconstructs synthetic high-temporal-resolution data for a target ...
Azarakhsh Jalalvand, SangKyeun Kim, Jaemin Seo, Qiming Hu, Max Curie, Peter Steiner, Andrew Oakleigh Nelson, Yong-Su Na, Egemen Kolemen   +8 more
doaj   +2 more sources

Permanent magnets for ELM suppression in tokamaks: feasibility and operational compatibility

Nuclear Fusion
Permanent magnets can provide static magnetic fields without power supplies or feed lines, offering a simpler alternative to conventional electromagnets in tokamaks.
S.M. Yang, A. Bortolon, Q. Hu, S.K. Kim, D. Mauzey   +4 more
doaj   +2 more sources

Advances in the physics understanding of ELM suppression using resonant magnetic perturbations in DIII-D

Nuclear Fusion, 2015
Abstract Recent experiments on DIII-D have increased confidence in the ability to suppress edge-localized modes (ELMs) using edge-resonant magnetic perturbations (RMPs) in ITER, including an improved physics basis for the edge response to RMPs as well as expansion of RMP ELM suppression to more ITER-like conditions.
Raffi Nazikian, Andreas Wingen, E A Unterberg   +2 more
exaly   +4 more sources

Edge turbulence transport during ELM suppression with n = 4 resonant magnetic perturbation on EAST

Nuclear Fusion, 2023
The edge turbulence characteristics and the induced radial transport have been investigated in edge localized mode (ELM) suppression by using the $n = $ 4 resonant magnetic perturbation coils on EAST, with ${q_{95}} = $ 3.6 and the electron ...
S.C. Liu, Y. Liang, L.T. Li, T.F. Tang, X.H. Wu, N. Yan, T.H. Shi, G.S. Li, K.X. Ye, L.Y. Meng, R. Ding, Y. Sun, M. Jia, Q. Ma, Q. Zang, X. Li, S.X. Wang, M.R. Wang, H.L. Zhao, J.L. Wei, T. Zhang, Y.F. Jin, L. Liao, W.Y. Wei, Y. Li, R. Chen, G.H. Hu, N. Zhao, X.J. Liu, T.F. Ming, X. Han, W.B. Zhang, L. Wang, J.P. Qian, L. Zeng, G.Q. Li, G.S. Xu, X.Z. Gong, X. Gao, the EAST Team   +39 more
doaj   +1 more source

Non-linear modeling of the threshold between ELM mitigation and ELM suppression by resonant magnetic perturbations in ASDEX upgrade [PDF]

Physics of Plasmas, 2019
The interaction between Edge-Localized Modes (ELMs) and Resonant Magnetic Perturbations (RMPs) is modeled with the magnetohydrodynamic code JOREK using experimental parameters from ASDEX Upgrade discharges. According to the modeling, the ELM mitigation or suppression is optimal when the amplification of both tearing and peeling-kink responses results ...
F. Orain, M. Hoelzl, F. Mink, M. Willensdorfer, M. Bécoulet, M. Dunne, S. Günter, G. Huijsmans, K. Lackner, S. Pamela, W. Suttrop, E. Viezzer   +11 more
openaire   +8 more sources

Kinetic study of the bifurcation of resonant magnetic perturbations for edge localized mode suppression in ASDEX Upgrade

Nuclear Fusion, 2023
The correlation between the bifurcation of resonant magnetic perturbations (RMPs) to the unshielded state and edge localized mode (ELM) suppression in ASDEX Upgrade is studied using a kinetic plasma response model numerically and analytically.
Markus Markl, Philipp Ulbl, Christopher G. Albert, Clemente Angioni, Rico Buchholz, Martin F. Heyn, Sergei V. Kasilov, Winfried Kernbichler, Wolfgang Suttrop, Matthias Willensdorfer, the ASDEX Upgrade Team   +10 more
doaj   +1 more source

Mechanism of CO2 Capacity Reduction of Flexible Metal-Organic Framework Caused by Water Adsorption

Frontiers in Materials, 2022
Elastic layer-structured metal-organic framework (MOF)-11 {ELM-11: [Cu(BF4)2 (4,4′-bipyridine)2]}, which is a crystalline porous material, is a promising adsorbent for high-throughput and high-efficiency separation processes of CO2 because of its ...
Satoshi Watanabe, Shotaro Hiraide, Hayato Kunimitsu, Atsushi Fujiwara, Minoru T. Miyahara   +4 more
doaj   +1 more source

Active wall conditioning through boron powder injection compatible ELM control in EAST

Nuclear Materials and Energy, 2023
Real-time wall conditioning and edge-localized mode (ELM) suppression through real-time boron powder injection into high-confinement mode discharges of the Experimental Advanced Superconducting Tokamak (EAST) have been investigated.
W. Xu, Z. Sun, R. Maingi, G.Z. Zuo, Y.W. Yu, C.L. Li, Y.H. Guan, Z.T. Zhou, X.C. Meng, M. Huang, L. Zhang, W. Gao, J.S. Hu   +12 more
doaj   +1 more source