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

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.
Authors:
 [1] ;  [2] ;  [3] ;  [4] ;  [3] ;  [3] ;  [2]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  2. (United Kingdom)
  3. Warwick Univ., Coventry (United Kingdom)
  4. (United Kingdom). Culham Centre for Fusion Energy (CCFE)
Publication Date:
Grant/Contract Number:
AC05-00OR22725
Type:
Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 118; Journal Issue: 10; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Research Org:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
OSTI Identifier:
1347308

Carbajal, L., Warwick Univ., Coventry, Dendy, R. O., Culham Science Centre, Abingdon, Chapman, S. C., Cook, J. W. S., and First Light Fusion Ltd., Oxfordshire. Quantifying Fusion Born Ion Populations in Magnetically Confined Plasmas using Ion Cyclotron Emission. United States: N. p., Web. doi:10.1103/PhysRevLett.118.105001.
Carbajal, L., Warwick Univ., Coventry, Dendy, R. O., Culham Science Centre, Abingdon, Chapman, S. C., Cook, J. W. S., & First Light Fusion Ltd., Oxfordshire. Quantifying Fusion Born Ion Populations in Magnetically Confined Plasmas using Ion Cyclotron Emission. United States. doi:10.1103/PhysRevLett.118.105001.
Carbajal, L., Warwick Univ., Coventry, Dendy, R. O., Culham Science Centre, Abingdon, Chapman, S. C., Cook, J. W. S., and First Light Fusion Ltd., Oxfordshire. 2017. "Quantifying Fusion Born Ion Populations in Magnetically Confined Plasmas using Ion Cyclotron Emission". United States. doi:10.1103/PhysRevLett.118.105001. https://www.osti.gov/servlets/purl/1347308.
@article{osti_1347308,
title = {Quantifying Fusion Born Ion Populations in Magnetically Confined Plasmas using Ion Cyclotron Emission},
author = {Carbajal, L. and Warwick Univ., Coventry and Dendy, R. O. and Culham Science Centre, Abingdon and Chapman, S. C. and Cook, J. W. S. and First Light Fusion Ltd., Oxfordshire},
abstractNote = {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.},
doi = {10.1103/PhysRevLett.118.105001},
journal = {Physical Review Letters},
number = 10,
volume = 118,
place = {United States},
year = {2017},
month = {3}
}