Quantifying Fusion Born Ion Populations in Magnetically Confined Plasmas using Ion Cyclotron Emission

Carbajal, L.; Dendy, R. O.; Chapman, S. C.; Cook, J. W. S.

doi:10.1103/PhysRevLett.118.105001

Title: Quantifying Fusion Born Ion Populations in Magnetically Confined Plasmas using Ion Cyclotron Emission

Journal Article · Tue Mar 07 00:00:00 EST 2017 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.118.105001· OSTI ID:1347308

Carbajal, L. ^[1]; Dendy, R. O. ^[2]; Chapman, S. C. ^[2]; Cook, J. W. S. ^[2]

Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Warwick Univ., Coventry (United Kingdom)

Ion cyclotron emission (ICE) offers unique promise as a diagnostic of the fusion born alpha-particle population in magnetically confined plasmas. Pioneering observations from JET and TFTR found that ICE intensity P ICE scales approximately linearly with the measured neutron flux from fusion reactions, and with the inferred concentration, n /n i , of fusion-born alpha-particles confined within the plasma. We present fully nonlinear self-consistent kinetic simulations that reproduce this scaling for the first time. This resolves a longstanding question in the physics of fusion alpha particle confinement and stability in MCF plasmas. It confirms the MCI as the likely emission mechanism and greatly strengthens the basis for diagnostic exploitation of ICE in future burning plasmas.

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Research Organization:: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: AC05-00OR22725

OSTI ID:: 1347308

Journal Information:: Physical Review Letters, Vol. 118, Issue 10; ISSN 0031-9007

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 23 works

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References (28)

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Radio frequency measurements of energetic-particle-driven emission using the ion cyclotron emission diagnostic on the DIII-D tokamak Thome, K. E.; Pace, D. C.; Pinsker, R. I. Review of Scientific Instruments, Vol. 89, Issue 10 https://doi.org/10.1063/1.5035561	journal	October 2018
Emission in the ion cyclotron range of frequencies (ICE) on NSTX and NSTX-U Fredrickson, E. D.; Gorelenkov, N. N.; Bell, R. E. Physics of Plasmas, Vol. 26, Issue 3 https://doi.org/10.1063/1.5081047	journal	March 2019
Characteristics of fast ³ He ion velocity distribution exciting ion cyclotron emission on JT-60U Sumida, Shuhei; Shinohara, Kouji; Ikezoe, Ryuya Plasma Physics and Controlled Fusion, Vol. 61, Issue 2 https://doi.org/10.1088/1361-6587/aaf184	journal	January 2019
Distinct stages of radio frequency emission at the onset of pedestal collapse in KSTAR H-mode plasmas Kim, M. H.; Thatipamula, S. G.; Lee, J. E. Nuclear Fusion, Vol. 58, Issue 9 https://doi.org/10.1088/1741-4326/aad05a	journal	July 2018
Central ion cyclotron emission in the DIII-D tokamak Thome, K. E.; Pace, D. C.; Pinsker, R. I. Nuclear Fusion, Vol. 59, Issue 8 https://doi.org/10.1088/1741-4326/ab20e7	journal	June 2019
Interpreting observations of ion cyclotron emission from large helical device plasmas with beam-injected ion populations Reman, B. C. G.; Dendy, R. O.; Akiyama, T. Nuclear Fusion, Vol. 59, Issue 9 https://doi.org/10.1088/1741-4326/ab2ca2	journal	July 2019
Interpretation of suprathermal emission at deuteron cyclotron harmonics from deuterium plasmas heated by neutral beam injection in the KSTAR tokamak Chapman, B.; Dendy, R. O.; Chapman, S. C. Nuclear Fusion, Vol. 59, Issue 10 https://doi.org/10.1088/1741-4326/ab35a7	journal	August 2019
Distinct stages of radio frequency emission at the onset of pedestal collapse in KSTAR H-mode plasmas Kim, Minho; Thatipamula, Shekar G.; Lee, Jieun arXiv https://doi.org/10.48550/arxiv.1803.09376	text	January 2018

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