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Monitoring the leakage of 3.0 and 14.7 MeV protons from a fusion plasma (Articolo in rivista)

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Monitoring the leakage of 3.0 and 14.7 MeV protons from a fusion plasma (Articolo in rivista) (literal)

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Raquel González de Orduña; Mikael Hult; Georges Bonheure; Matthias Laubenstein; Gerd Marissens; Peter Vermaercke; J.S. Elisabeth Wieslander; Andrea Murari; JETEFDAContributors (2011)
Monitoring the leakage of 3.0 and 14.7 MeV protons from a fusion plasma
in NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT; ELSEVIER SCIENCE BV, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS, AMSTERDAM (Paesi Bassi)
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Raquel González de Orduña; Mikael Hult; Georges Bonheure; Matthias Laubenstein; Gerd Marissens; Peter Vermaercke; J.S. Elisabeth Wieslander; Andrea Murari; JETEFDAContributors (literal)

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a EC-JRC-IRMM, Institute for Reference Materials and Measurements, Retieseweg 111, B-2440 Geel, Belgium; - b Laboratory for Plasma Physics, Association ''Euratom-Belgian State'', Royal Military Academy, Avenue de la Renaissance, 30, Kunstherlevinglaan, B-1000 Brussels, Belgium; - c Laboratori Nazionali del Gran Sasso, I.N.F.N. S.S. 17/bis, km 18+910, I-67010 Assergi (AQ), Italy; - d Studiecentrum voor Kerenergie-Centre d'Etude de l'énergie Nucléaire SCK-CEN, Boeretang, B-2400 Mol, Belgium; - e Association EURATOM/ENEA, Consorzio RFX, 4-35127 Padova, Italy. - (Raquel González de Orduña a, Mikael Hult a, Georges Bonheure b, Matthias Laubenstein c, Gerd Marissens a, Peter Vermaercke d, J.S. Elisabeth Wieslander a, Andrea Murari e, JET EFDA Contributors See the Appendix of F. Romanelli et al., Proceedingsofthe23rd IAEA Fusion Energy Conference 2010, Daejon, Korea.) (literal)

Titolo

Monitoring the leakage of 3.0 and 14.7 MeV protons from a fusion plasma (literal)

Abstract

An experiment to study, separately, the leakage of protons of 3.0 and 14.7 MeV in the JET Tokamak, is presented. The activity of the activation products induced by the plasma in different samples that were placed inside the Tokamak was measured using ultra low-level gamma-ray spectrometry (ULGS). Stacking of some of the samples during activation allowed differentiating between the protons of 3.0 and 14.7 MeV that originated in two different reactions in the plasma. For the B(4)C sample the ratio of the 3.0 and 14.7 MeV proton flux could be determined as 0.17(10) assuming normal incidence and 0.31(16) assuming 45 degrees incidence. For LiF the result obtained was that, within the uncertainty, there was no contribution from the 3.0 MeV protons. (literal)

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