Alpha heating in JET plasmas with sawteeth

Authors:   R.V. Budny  and JET contributors


Abstract:  Alpha heating is essential for practical energy production from DT fusion reactions. Experiments to detect alpha heating were performed in TFTR (1994) [1] and in JET (1997) [2].  Measurements of alpha heating were difficult since the alpha heating power Pa was small relative to the external heating Pext, and since the experiments were not accurately reproducible. It was difficult to realize comparable DD or TT discharges for comparison. One cause of irreproducibility in the JET discharges was the presence of sawteeth.
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Presented at:  EPS Lisbon June 2015
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Download PPPL-5190 (pdf 1.9 MB 7 pp)
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