Synthetic fast ion diagnostics in tokamaks: Comparing the monte carlo test particle code ASCOT against experiments

Research output: Contribution to journalArticleScientificpeer-review

Abstract

Measuring fast ions, most notably fusion alphas, in ITER and future reactors remains an issue that still lacks an adequate solution. Numerical simulations are invaluable in testing the potential and limitations of various proposed diagnostics. However, the validity of the numerical tools first has to be checked against results from existing tokamaks. In this contribution, various synthetic diagnostics for fast ions (collective Thomson scattering, neutral particle analyzer, neutron camera, infrared measurements, fast ion loss detector, and activation probe) from the orbit-following Monte Carlo code ASCOT are compared to measurements from several tokamaks (ASDEX Upgrade, DIII-D, and JET). Within the limitations of the physics included in the numerical model and availability of input data from experiments, the agreement between synthetic data and measurements is found to be quite good.

Original languageEnglish
Pages (from-to)620-627
Number of pages8
JournalFusion Science and Technology
Volume69
Issue number3
DOIs
Publication statusPublished - 1 May 2016
MoE publication typeA1 Journal article-refereed

Keywords

  • ASCOT
  • Fast ion diagnostics
  • Monte Carlo simulation

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