Results 11 to 20 of about 2,222,331 (211)

Alfven cyclotron instability and ion cyclotron emission [PDF]

Nuclear Fusion, 1995
Two-dimensional solutions of compressional Alfven eigenmodes (CAEs) are studied in the cold plasma approximation. For finite inverse aspect ratio tokamak plasmas the two-dimensional eigenmode envelope is localized at the low magnetic field side with the radial and poloidal localization on the order of a/ square root m and a/4 square root m ...
N.N Gorelenkov, C.Z Cheng
core   +5 more sources

Observations of core ion cyclotron emission on ASDEX Upgrade tokamak [PDF]

Review of Scientific Instruments, 2018
The B-dot probe diagnostic suite on the ASDEX Upgrade tokamak has recently been upgraded with a new 125 MHz, 14 bit resolution digitizer to study ion cyclotron emission (ICE). While classic edge emission from the low field side plasma is often observed, we also measure waves originating from the core with fast fusion protons or beam injected deuterons ...
R. Ochoukov, V. Bobkov, B. Chapman, R. Dendy, M. Dunne, H. Faugel, M. García-Muñoz, B. Geiger, P. Hennequin, K. G. McClements, D. Moseev, S. Nielsen, J. Rasmussen, P. Schneider, M. Weiland, J.-M. Noterdaeme   +15 more
core   +13 more sources

On ion cyclotron emission in toroidal plasmas

Nuclear Fusion, 2006
A detailed study of ion cyclotron interactions in a toroidal plasma has been carried out in order to elucidate the role of toroidal effects on ion cyclotron emission. It is well known that non-relaxed distribution functions can give rise to excitation of magnetosonic waves by ion cyclotron interactions when the distribution function increases with ...
T Hellsten, K Holmström, T Johnson, T Bergkvist, M Laxåback   +4 more
openaire   +2 more sources

Core plasma ion cyclotron emission driven by fusion-born ions [PDF]

Nuclear Fusion, 2018
Comunidad Europea de la Energía Atómica (EURATOM ...
R. Ochoukov, R. Bilato, V. Bobkov, B. Chapman, S.C. Chapman, R.O. Dendy, M. Dunne, H. Faugel, M. García-Muñoz, B. Geiger, A. Kallenbach, A. Kappatou, K.G. McClements, D. Moseev, S. Nielsen, J. Rasmussen, P. Schneider, M. Weiland, J.-M. Noterdaeme   +18 more
openaire   +6 more sources

Ion cyclotron emission on ASDEX upgrade [PDF]

, 2014
This works deals with the Ion Cyclotron Emission (ICE), a plasma instability that takes place both in astrophysical plasmas and in fusion energy facilities like Tokamaks and Stellarators, when a population of high energetic ions is present. These fast ions can interact with the waves which propagate in the background thermal plasma and excite ...
D'Inca, Rodolphe
core   +3 more sources

Interpretation of ion cyclotron emission in the HL-2A tokamak

Nuclear Fusion
We report the first interpretation of ion cyclotron emission (ICE) based on the frequency variation in HL-2A tokamak experiments. The measured frequencies of ICE are concentrated around the ion cyclotron frequency, while simultaneously exhibiting a ...
Linzi Liu, Ruihai Tong, Haozhe Kong, Huasheng Xie, Huiling Wei, Guoliang Xiao, Zengchen Yang, Yonggao Li, Yang Chen, Min Jiang, Guangzhou Hao, Ji Xiaoquan, Li Bo, Li Jiquan, Zhongbin Shi, Min Xu, Wulyu Zhong, HL-2A team   +17 more
doaj   +2 more sources

First observations of ion cyclotron emission in the TCV tokamak

Nuclear Fusion
The first observations of ion cyclotron emission (ICE) in the Tokamak à Configuration Variable (TCV) tokamak are reported. The measured ICE frequency closely follows the deuterium ion cyclotron frequency at the magnetic axis, with temporal variations ...
A. Jansen van Vuuren, M.B. Dreval, R. Ochoukov, S.E. Sharapov, B.P. Duval, H. Elaian, L. Simons, C. Paraskevopoulos, A.N. Karpushov, the EUROfusion Tokamak Exploitation Team, the TCV Team   +10 more
doaj   +4 more sources

Explanation of core ion cyclotron emission from beam-ion heated plasmas in ASDEX Upgrade by the magnetoacoustic cyclotron instability [PDF]

Nuclear Fusion, 2020
Abstract Bursts of ion cyclotron emission (ICE), with spectral peaks corresponding to the hydrogen cyclotron harmonic frequencies in the plasma core are detected from helium plasmas heated by sub-Alfvénic beam-injected hydrogen ions in the ASDEX Upgrade tokamak. Based on the fast ion distribution function obtained from TRANSP/NUBEAM code,
Lunan Liu, R. Ochoukov, K.G. McClements, R.O. Dendy, V. Bobkov, M. Weiland, R. Bilato, H. Faugel, D. Moseev, M. Salewski, Wei Zhang, Xinjun Zhang, Yubao Zhu, B. Chapman, A. Zalzali   +14 more
core   +5 more sources

Study of ion cyclotron emission excited by tritium ions of fusion products via magnetoacoustic cyclotron instability theory in the EAST

Nuclear Fusion
This study investigates the ion cyclotron emission (ICE) excited by tritium ions generated through deuterium‒deuterium fusion reactions in the Experimental Advanced Superconducting Tokamak (EAST). ICE is an electromagnetic instability driven by fast ions,
Huapeng Zhang, Lunan Liu, Wei Zhang, Xuan Sun, Xinjun Zhang, Baolong Hao   +5 more
doaj   +2 more sources

Development of the ion cyclotron emission diagnostic for the W7-X stellarator [PDF]

Review of Scientific Instruments, 2021
An ion cyclotron emission (ICE) diagnostic is prepared for installation into the W7-X stellarator, with the aim to be operated in the 2022 experimental campaign. The design is based on the successful ICE diagnostic on the ASDEX Upgrade tokamak. The new diagnostic consists of four B-dot probes, mounted about 72° toroidally away (one module) from the ...
W7-X Team, Moseev, D., Ochoukov, R., Bobkov, V., Dendy, R. O., Faugel, H., Hartmann, D., Kallmeyer, J.-P., Lansky, J., Laqua, H. P., Marsen, S., McClements, K. G., Nielsen, S. K., Reintrog, A., Salewski, M., Schmidt, B. S., Schulz, T., Stange, T., Gantenbein, Gerd, Huber, Martina, Illy, Stefan, Jelonnek, John, Kobarg, Thorsten, Lang, Rouven, Leonhardt, Wolfgang, Mellein, Daniel, Papenfuß, Daniel, Scherer, Theo, Thumm, Manfred, Wadle, Simone, Weggen, Jörg   +30 more
openaire   +6 more sources