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BEGIN:VEVENT
DTSTAMP:20260617T230324Z
DTSTART;VALUE=DATE-TIME:20231107T110000
DTEND;VALUE=DATE-TIME:20231107T120000
SUMMARY:James Cook (UKAEA): Doublet splitting of fusion alpha particle dr
 iven ion cyclotron emission
TZID:Europe/London
UID:20231107-8a17841b8a655cd7018a74b25ec0266b@warwick.ac.uk
CREATED:20231102T171529Z
DESCRIPTION:Abstract: Ion cyclotron emission (ICE) originating from confi
 ned populations of fast ions in toroidal fusion plasmas is an important 
 non-invasive\, passive diagnostic for current and next-generation device
 s. The ability to model ICE signals accurately is an essential step towa
 rds inferring the characteristics of confined energetic alpha particles 
 or fast neutral beam ions and background plasma. In this paper\, the lin
 ear growth rates of the magnetoacoustic cyclotron instability\, which is
  the leading explanation for ICE\, are calculated in high-resolution 2D 
 space for parameters corresponding to JET Pulse No. 26148. These calcula
 tions further highlight the origin of doublet splitting of the cyclotron
  harmonics and the perceived need to invoke nonlinear interactions with 
 1D3V particle-in-cell studies to account for lower harmonics with substa
 ntial amplitudes. The inclusion of signals of ICE from a well-resolved r
 ange of propagation angles can also account for these effects.
LOCATION:PS128
CATEGORIES:CFSA Seminar
LAST-MODIFIED:20231102T171529Z
ORGANIZER;CN=Anne-Marie Broomhall:
END:VEVENT
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