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Neutron spectroscopy measurements of tritium beam transport at JET
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics.
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2014 (English)In: Nuclear Fusion, ISSN 0029-5515, E-ISSN 1741-4326, Vol. 54, no 10, 104010- p.Article in journal, Meeting abstract (Refereed) Published
Abstract [en]

A detailed description of the 14 MeV neutron emission in plasmas heated by neutral beam injection has been carried out by coupling Monte Carlo calculations of the neutron emission spectrum with TRANSP modelling of the beam ion energy distributions. The model is used to study tritium beam injection experiments of the JET trace tritium campaign for internal transport barrier (ITB) and H-mode discharges. For ITB discharges, the measured neutron emission spectrum is well described by modelling using as input the beam ion distribution calculated with TRANSP. For H mode discharges the neutron spectrum can be reproduced only if high energy tritons are lost from the plasma, suggesting the possible role of low frequency tearing modes on the beam ions. The presented results are of relevance for tritium beam transport studies in trace tritium experiments and, more generally, for deuterium and tritium transport studies in high power experiments using neutron emission spectroscopy.

Place, publisher, year, edition, pages
2014. Vol. 54, no 10, 104010- p.
National Category
Fusion, Plasma and Space Physics Engineering and Technology
Research subject
Engineering Science with specialization in Science of Electricity
Identifiers
URN: urn:nbn:se:uu:diva-233736DOI: 10.1088/0029-5515/54/10/104010ISI: 000344964200019OAI: oai:DiVA.org:uu-233736DiVA: diva2:753969
Conference
13th IAEA Technical Meeting on Energetic Particles in Magnetic Confinement Systems, Sep 17-20, 2013, Beijing, China
Available from: 2014-10-09 Created: 2014-10-09 Last updated: 2017-12-05Bibliographically approved

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Eriksson, JacobConroy, SeanEricsson, GöranHellesen, CarlKällne, Jan

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