Observation of alpha particle loss from JET plasmas during ion cyclotron resonance frequency heating using a thin foil Faraday cup detector array

D.S. Darrow, F.E. Cecil, V. Kiptily, K. Fullard, A. Horton, A. Murari

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The loss of MeV alpha particles from JET plasmas has been measured with a set of thin foil Faraday cup detectors during third harmonic heating of helium neutral beam ions. Tail temperatures of ∼2 MeV have been observed, with radial scrape off lengths of a few centimeters. Operational experience from this system indicates that such detectors are potentially feasible for future large tokamaks, but careful attention to screening rf and MHD induced noise is essential. © 2010 EURATOM.
Original languageEnglish
Article number10D330
Pages (from-to)-
JournalReview of Scientific Instruments
Issue number10
Publication statusPublished - Oct 2010
Externally publishedYes


All Science Journal Classification (ASJC) codes

  • Instrumentation

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