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Conceptual Design, Development and Preliminary Tests of a Compact Neutron Spectrometer for the JET Experiment
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics.
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2012 (English)In: IEEE Transactions on Nuclear Science, ISSN 0018-9499, E-ISSN 1558-1578, Vol. 59, no 5, 2512-2519 p.Article in journal (Refereed) Published
Abstract [en]

A Compact Neutron Spectrometer (CNS) has been developed to measure the neutron emission spectra in Joint European Torus (JET) fusion plasma experiments. The spectrometer, based on a liquid scintillation detector (BC501A), is equipped with a Digital Pulse Shape Discrimination (DPSD) acquisition system for neutron (n) and gamma-ray(gamma) separation. The CNS enables recording the n and gamma pulse height spectra (PHS) up to total count rates of similar to 10(6) s(-1). Energy resolution, after PHS unfolding, will be <2% for 14 MeV neutrons and <4% for 2.5 MeV neutrons. The work done by ENEA-Frascati and Physikalisch-Technische Bundesanstalt (PTB) respectively in the assembly and test of DPSD and scintillation detector, along with the first results obtained by the spectrometer in JET plasma experiments are presented. The experience obtained with CNS in JET will contribute to the development of neutron spectrometers suitable for applications in the International Thermonuclear Experimental Reactor (ITER).

Place, publisher, year, edition, pages
2012. Vol. 59, no 5, 2512-2519 p.
Keyword [en]
Compact neutron spectrometer, digital signal processing, liquid organic scintillator, tokamak diagnostics
National Category
Natural Sciences
URN: urn:nbn:se:uu:diva-185513DOI: 10.1109/TNS.2012.2208763ISI: 000310143400021OAI: oai:DiVA.org:uu-185513DiVA: diva2:571982
Available from: 2012-11-26 Created: 2012-11-26 Last updated: 2012-11-26Bibliographically approved

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