Upgrades to the ion cyclotron emission diagnostic on the DIII-D tokamak

2021 ◽  
Vol 92 (3) ◽  
pp. 033543
Author(s):  
G. H. DeGrandchamp ◽  
K. E. Thome ◽  
W. W. Heidbrink ◽  
I. Holmes ◽  
R. I. Pinsker
Keyword(s):  
Ion Cyclotron ◽  
Cyclotron Emission

scholarly journals Novel internal measurements of ion cyclotron frequency range fast-ion driven modes

2021 ◽  
Author(s):  
Neal A Crocker ◽  
Shawn X Tang ◽  
Kathreen E Thome ◽  
Jeff Lestz ◽  
Elena Belova ◽  
...  
Keyword(s):  
Cyclotron Frequency ◽  
Harmonic Wave ◽  
Wave Number ◽  
Frequency Range ◽  
High Wave Number ◽  
Minor Radius ◽  
Ion Cyclotron ◽  
Cyclotron Emission ◽  
Edge Localized Modes ◽  
Fast Ion

Abstract Novel internal measurements and analysis of ion cyclotron frequency range fast-ion driven modes in DIII-D are presented. Observations, including internal density fluctuation (ñ) measurements obtained via Doppler Backscattering, are presented for modes at low harmonics of the ion cyclotron frequency localized in the edge. The measurements indicate that these waves, identified as coherent Ion Cyclotron Emission (ICE), have high wave number, _⊥ρ_fast ≳ 1, consistent with the cyclotron harmonic wave branch of the magnetoacoustic cyclotron instability (MCI), or electrostatic instability mechanisms. Measurements show extended spatial structure (at least ~ 1/6 the minor radius). These edge ICE modes undergo amplitude modulation correlated with edge localized modes (ELM) that is qualitatively consistent with expectations for ELM-induced fast-ion transport.

Ion Cyclotron Emission — a Natural Diagnostic for Fusion Alpha Particles

1994 ◽  
Vol 25 (3) ◽  
pp. 334-340 ◽  
Author(s):  
Richard O. Dendy ◽  
Chris N. Lashmore-Davies ◽  
Geoff A. Cottrell ◽  
Kenneth G. McClements ◽  
Kin F. Kam
Keyword(s):  
Alpha Particles ◽  
Ion Cyclotron ◽  
Cyclotron Emission

scholarly journals Simulation Study of High-Frequency Magnetosonic Waves Excited by Energetic Ions in Association with Ion Cyclotron Emission

2018 ◽  
Vol 13 (0) ◽  
pp. 3403015-3403015 ◽  
Author(s):  
Mieko TOIDA ◽  
Kenji SAITO ◽  
Hiroe IGAMI ◽  
Tsuyoshi AKIYAMA ◽  
Shuji KAMIO ◽  
...  
Keyword(s):  
Simulation Study ◽  
High Frequency ◽  
Energetic Ions ◽  
Ion Cyclotron ◽  
Cyclotron Emission

Ion cyclotron emission driven by deuterium neutral beam injection and core fusion reaction ions in EAST

2020 ◽  
Vol 60 (4) ◽  
pp. 044002
Author(s):  
Lunan Liu ◽  
Xinjun Zhang ◽  
Yubao Zhu ◽  
Chengming Qin ◽  
Yanping Zhao ◽  
...  
Keyword(s):  
Fusion Reaction ◽  
Neutral Beam Injection ◽  
Neutral Beam ◽  
Beam Injection ◽  
Ion Cyclotron ◽  
Cyclotron Emission

Origin of superthermal ion cyclotron emission in tokamaks

1997 ◽  
Vol 37 (9) ◽  
pp. 1281-1293 ◽  
Author(s):  
T Fulop ◽  
Ya.I Kolesnichenko ◽  
M Lisak ◽  
D Anderson
Keyword(s):  
Ion Cyclotron ◽  
Cyclotron Emission
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