Alpha diagnostics using pellet charge exchange: Results on the Tokamak fusion test reactor and prospects for ITER

R. K. Fisher, H. H. Duong, J. M. McChesney, P. B. Parks, S. S. Medley, R. V. Budny, D. K. Mansfield, A. L. Roquemore, M. P. Petrov, N. N. Gorelenkov

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

Confinement of alpha particles is essential for fusion ignition and alpha physics studies are a major goal of the TFTR, JET, and ITER DT experiments, but alpha measurements remain one of the most challenging plasma diagnostic tasks. The pellet charge exchange (PCX) diagnostic has successfully measured the radial density profile and energy distribution of fast (0.5-3.5 MeV) confined alpha particles in TFTR. This article describes the diagnostic capabilities of PCX demonstrated on TFTR and discusses the prospects for applying this technique to ITER. Major issues on ITER include the pellet's perturbation to the plasma and obtaining satisfactory pellet penetration into the plasma.

Original languageEnglish (US)
Pages (from-to)336-339
Number of pages4
JournalReview of Scientific Instruments
Volume68
Issue number1
DOIs
StatePublished - Jan 1997
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Instrumentation

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