Core plasma ion cyclotron emission driven by fusion-born ions

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

*Corresponding author for this work

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Abstract

Ion cyclotron emission (ICE) signals whose spectral peaks match the fundamental cyclotron frequencies of hydrogen and tritium in the plasma core, near the magnetic axis, are observed in ASDEX Upgrade deuterium plasmas. In these cases the only source of energetic (⩾1 MeV) hydrogen and tritium ions is D–D fusion reactions between neutral beam injected deuterium ions and bulk deuterium ions. Hydrogen-matched core ICE is observed in a wide variety of ASDEX Upgrade plasmas, while tritium-matched core ICE is (so far) only observed in so-called H-mode density limit plasmas. In all cases ICE signals are detected directly using B-dot probes, which provide information on the emission frequency, the amplitude, and, in principle, the parallel wavenumber values. These observations support the idea of using an ICE-based diagnostic to monitor the presence of fusion-born alpha particles in tritium-burning fusion plasmas on devices such as JET, ITER, CFETR, or DEMO.
Original languageEnglish
Article number014001
JournalNuclear Fusion
Volume59
Issue number1
Number of pages5
ISSN0029-5515
DOIs
Publication statusPublished - 2019

Keywords

  • ICRF Waves
  • Ion cyclotron emission
  • Tokamak plasmas

Cite this

Ochoukov, R., Bilato, R., Bobkov, V., Chapman, B., Chapman, S. C., Dendy, R. O., ... Noterdaeme, J-M. (2019). Core plasma ion cyclotron emission driven by fusion-born ions. Nuclear Fusion, 59(1), [014001]. https://doi.org/10.1088/1741-4326/aaebb0
Ochoukov, R. ; Bilato, R. ; Bobkov, V. ; Chapman, B. ; Chapman, S.C. ; Dendy, R.O. ; Dunne, M. ; Faugel, H. ; García-Muñoz, M. ; Geiger, B. ; Kallenbach, A. ; Kappatou, A. ; McClements, K.G. ; Moseev, D. ; Nielsen, S. ; Rasmussen, J. ; Schneider, P. ; Weiland, M. ; Noterdaeme, J.-M. / Core plasma ion cyclotron emission driven by fusion-born ions. In: Nuclear Fusion. 2019 ; Vol. 59, No. 1.
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abstract = "Ion cyclotron emission (ICE) signals whose spectral peaks match the fundamental cyclotron frequencies of hydrogen and tritium in the plasma core, near the magnetic axis, are observed in ASDEX Upgrade deuterium plasmas. In these cases the only source of energetic (⩾1 MeV) hydrogen and tritium ions is D–D fusion reactions between neutral beam injected deuterium ions and bulk deuterium ions. Hydrogen-matched core ICE is observed in a wide variety of ASDEX Upgrade plasmas, while tritium-matched core ICE is (so far) only observed in so-called H-mode density limit plasmas. In all cases ICE signals are detected directly using B-dot probes, which provide information on the emission frequency, the amplitude, and, in principle, the parallel wavenumber values. These observations support the idea of using an ICE-based diagnostic to monitor the presence of fusion-born alpha particles in tritium-burning fusion plasmas on devices such as JET, ITER, CFETR, or DEMO.",
keywords = "ICRF Waves, Ion cyclotron emission, Tokamak plasmas",
author = "R. Ochoukov and R. Bilato and V. Bobkov and B. Chapman and S.C. Chapman and R.O. Dendy and M. Dunne and H. Faugel and M. Garc{\'i}a-Mu{\~n}oz and B. Geiger and A. Kallenbach and A. Kappatou and K.G. McClements and D. Moseev and S. Nielsen and J. Rasmussen and P. Schneider and M. Weiland and J.-M. Noterdaeme",
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Ochoukov, R, Bilato, R, Bobkov, V, Chapman, B, Chapman, SC, Dendy, RO, Dunne, M, Faugel, H, García-Muñoz, M, Geiger, B, Kallenbach, A, Kappatou, A, McClements, KG, Moseev, D, Nielsen, S, Rasmussen, J, Schneider, P, Weiland, M & Noterdaeme, J-M 2019, 'Core plasma ion cyclotron emission driven by fusion-born ions', Nuclear Fusion, vol. 59, no. 1, 014001. https://doi.org/10.1088/1741-4326/aaebb0

Core plasma ion cyclotron emission driven by fusion-born ions. / Ochoukov, R.; Bilato, R.; Bobkov, V.; Chapman, B.; Chapman, S.C.; Dendy, R.O.; Dunne, M.; Faugel, H.; García-Muñoz, M.; Geiger, B.; Kallenbach, A.; Kappatou, A.; McClements, K.G.; Moseev, D.; Nielsen, S.; Rasmussen, J.; Schneider, P.; Weiland, M.; Noterdaeme, J.-M.

In: Nuclear Fusion, Vol. 59, No. 1, 014001, 2019.

Research output: Contribution to journalLetterResearchpeer-review

TY - JOUR

T1 - Core plasma ion cyclotron emission driven by fusion-born ions

AU - Ochoukov, R.

AU - Bilato, R.

AU - Bobkov, V.

AU - Chapman, B.

AU - Chapman, S.C.

AU - Dendy, R.O.

AU - Dunne, M.

AU - Faugel, H.

AU - García-Muñoz, M.

AU - Geiger, B.

AU - Kallenbach, A.

AU - Kappatou, A.

AU - McClements, K.G.

AU - Moseev, D.

AU - Nielsen, S.

AU - Rasmussen, J.

AU - Schneider, P.

AU - Weiland, M.

AU - Noterdaeme, J.-M.

PY - 2019

Y1 - 2019

N2 - Ion cyclotron emission (ICE) signals whose spectral peaks match the fundamental cyclotron frequencies of hydrogen and tritium in the plasma core, near the magnetic axis, are observed in ASDEX Upgrade deuterium plasmas. In these cases the only source of energetic (⩾1 MeV) hydrogen and tritium ions is D–D fusion reactions between neutral beam injected deuterium ions and bulk deuterium ions. Hydrogen-matched core ICE is observed in a wide variety of ASDEX Upgrade plasmas, while tritium-matched core ICE is (so far) only observed in so-called H-mode density limit plasmas. In all cases ICE signals are detected directly using B-dot probes, which provide information on the emission frequency, the amplitude, and, in principle, the parallel wavenumber values. These observations support the idea of using an ICE-based diagnostic to monitor the presence of fusion-born alpha particles in tritium-burning fusion plasmas on devices such as JET, ITER, CFETR, or DEMO.

AB - Ion cyclotron emission (ICE) signals whose spectral peaks match the fundamental cyclotron frequencies of hydrogen and tritium in the plasma core, near the magnetic axis, are observed in ASDEX Upgrade deuterium plasmas. In these cases the only source of energetic (⩾1 MeV) hydrogen and tritium ions is D–D fusion reactions between neutral beam injected deuterium ions and bulk deuterium ions. Hydrogen-matched core ICE is observed in a wide variety of ASDEX Upgrade plasmas, while tritium-matched core ICE is (so far) only observed in so-called H-mode density limit plasmas. In all cases ICE signals are detected directly using B-dot probes, which provide information on the emission frequency, the amplitude, and, in principle, the parallel wavenumber values. These observations support the idea of using an ICE-based diagnostic to monitor the presence of fusion-born alpha particles in tritium-burning fusion plasmas on devices such as JET, ITER, CFETR, or DEMO.

KW - ICRF Waves

KW - Ion cyclotron emission

KW - Tokamak plasmas

U2 - 10.1088/1741-4326/aaebb0

DO - 10.1088/1741-4326/aaebb0

M3 - Letter

VL - 59

JO - Nuclear Fusion

JF - Nuclear Fusion

SN - 0029-5515

IS - 1

M1 - 014001

ER -

Ochoukov R, Bilato R, Bobkov V, Chapman B, Chapman SC, Dendy RO et al. Core plasma ion cyclotron emission driven by fusion-born ions. Nuclear Fusion. 2019;59(1). 014001. https://doi.org/10.1088/1741-4326/aaebb0