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Velocity-space sensitivities of neutron emission spectrometers at the tokamaks JET and ASDEX Upgrade in deuterium plasmas
Culham Sci Ctr, EUROfus Consortium, JET, Abingdon OX14 3DB, Oxon, England.;Max Planck Inst Plasma Phys, Garching, Germany..
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics. Culham Sci Ctr, EUROfus Consortium, JET, Abingdon OX14 3DB, Oxon, England.
Culham Sci Ctr, EUROfus Consortium, JET, Abingdon OX14 3DB, Oxon, England.;Sci & Technol Facil Council, Rutherford Appleton Lab, ISIS Facil, Didcot OX11 0QX, Oxon, England..
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics. Culham Sci Ctr, EUROfus Consortium, JET, Abingdon OX14 3DB, Oxon, England.
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2017 (English)In: Review of Scientific Instruments, ISSN 0034-6748, E-ISSN 1089-7623, Vol. 88, no 7, 073506Article in journal (Refereed) Published
Abstract [en]

Future fusion reactors are foreseen to be heated by the energetic alpha particles produced in fusion reactions. For this to happen, it is important that the energetic ions are sufficiently confined. In present day fusion experiments, energetic ions are primarily produced using external heating systems such as neutral beam injection and ion cyclotron resonance heating. In order to diagnose these fast ions, several different fast-ion diagnostics have been developed and implemented in the various experiments around the world. The velocity-space sensitivities of fast-ion diagnostics are given by so-called weight functions. Here instrument-specific weight functions are derived for neutron emission spectrometry detectors at the tokamaks JET and ASDEX Upgrade for the 2.45 MeV neutrons produced in deuterium-deuterium reactions in deuterium plasmas. Using these, it is possible to directly determine which part of velocity space each detector observes.

Place, publisher, year, edition, pages
AMER INST PHYSICS , 2017. Vol. 88, no 7, 073506
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Physical Sciences
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URN: urn:nbn:se:uu:diva-333408DOI: 10.1063/1.4991651ISI: 000406773700017PubMedID: 28764505OAI: oai:DiVA.org:uu-333408DiVA: diva2:1157103
Available from: 2017-11-15 Created: 2017-11-15 Last updated: 2017-11-15Bibliographically approved

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Binda, FedericoEriksson, JacobHjalmarsson, Anders

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