Journal article
Experimental investigation of the confinement of d(3He,p)α and d(d,p)t fusion reaction products in JET
Royal Military Academy1
Aalto University2
Forschungszentrum Jülich GmbH3
Department of Physics, Technical University of Denmark4
Plasma Physics and Fusion Energy, Department of Physics, Technical University of Denmark5
European Commission Joint Research Centre Institute6
Physikalisch-Technische Bundesanstalt7
National Institute for Nuclear Physics8
Belgian Nuclear Research Center9
Max Planck Institute10
Consorzio RFX11
United Kingdom Atomic Energy Authority12
Association EURATOM-IPP.CR13
...and 3 moreIn ITER, magnetic fusion will explore the burning plasma regime. Because such burning plasma is sustained by its own fusion reactions, alpha particles need to be confined (Hazeltine 2010 Fusion Eng. Des. 7–9 85). New experiments using d(3He,p)α and d(d,p)t fusion reaction products were performed in JET.
Fusion product loss was measured from MHD-quiescent plasmas with a charged particle activation probe installed at a position opposite to the magnetic field ion gradient drift (see figure 1)—1.77 m above mid-plane—in the ceiling of JET tokamak. This new kind of escaping ion detector (Bonheure et al 2008 Fusion Sci.
Technol. 53 806) provides for absolutely calibrated measurements. Both the mechanism and the magnitude of the loss are dealt with by this research. Careful analysis shows measured loss is in quantitative agreement with predictions from the classical orbit loss model. However, the comparison with simulated loss radial profile, although improved compared with previous studies in TFTR, Princeton, US (Zweben et al 2000 Nucl.
Fusion 40 91), is not fully satisfactory and potential explanations for this discrepancy are examined.
Language: | English |
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Publisher: | IOP Publishing; IAEA |
Year: | 2012 |
Pages: | 083004 |
ISSN: | 10185577 , 00295515 and 17414326 |
Types: | Journal article |
DOI: | 10.1088/0029-5515/52/8/083004 |
ORCIDs: | Nielsen, Stefan Kragh |