Triton burn-up neutron emission in JET low current plasmas

Sjöstrand, Henrik; Gorini, G.; Conroy, S.; Ericsson, Göran; Giacomelli, L.; Henriksson, H.; Hjalmarsson, Anders; Källne, J.; Palma, Daniel Artur Pinheiro; Popovichev, S.; Tardocchi, M.; Weiszflog, M.; Contributors, Efda Jet

doi:10.1088/0022-3727/41/11/115208

Cited by 13 publications

(8 citation statements)

References 26 publications

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“…At JET, the 14 MeV, Triton Burn up Neutron emission (TBN) in deuterium plasmas is estimated to be about 1% of that at 2.5 MeV. [28][29][30] In order to observe TBN emission we have summed all discharges performed at JET during more than 1 month of operations with the result shown in Fig. 8.…”

Section: Neutron Measurements On Jet Deuterium Plasmasmentioning

confidence: 99%

Single crystal diamond detector measurements of deuterium-deuterium and deuterium-tritium neutrons in Joint European Torus fusion plasmas

Cazzaniga¹,

Sundén²,

Binda³

et al. 2014

Review of Scientific Instruments

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First simultaneous measurements of deuterium-deuterium (DD) and deuterium-tritium neutrons from deuterium plasmas using a Single crystal Diamond Detector are presented in this paper. The measurements were performed at JET with a dedicated electronic chain that combined high count rate capabilities and high energy resolution. The deposited energy spectrum from DD neutrons was successfully reproduced by means of Monte Carlo calculations of the detector response function and simulations of neutron emission from the plasma, including background contributions. The reported results are of relevance for the development of compact neutron detectors with spectroscopy capabilities for installation in camera systems of present and future high power fusion experiments.

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Section: Neutron Measurements On Jet Deuterium Plasmasmentioning

confidence: 99%

Single crystal diamond detector measurements of deuterium-deuterium and deuterium-tritium neutrons in Joint European Torus fusion plasmas

Cazzaniga¹,

Sundén²,

Binda³

et al. 2014

Review of Scientific Instruments

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“…The second reason that could explain such differences is that the simulation considers only 2.5 MeV mono-energetic neutrons, and does not include other components of the neutron spectrum. For example, a deuterium plasma can also generate the so-called triton burn up neutrons [23,24]. These are 14 MeV neutrons born from deuterium-tritium reactions (here, tritium is generated in the plasma by d+d → p + t) and constitute about 1% of the total neutron emission.…”

Section: Discussionmentioning

confidence: 99%

Response of LaBr3(Ce) scintillators to 2.5 MeV fusion neutrons

Cazzaniga¹,

Nocente²,

Tardocchi³

et al. 2013

Review of Scientific Instruments

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Measurements of the response function of LaBr 3 (Ce) to 2.5 MeV neutrons have been carried out at the Frascati Neutron Generator and at tokamak facilities with deuterium plasmas. The observed spectrum has been interpreted by means of a MCNP model. It is found that the main contributor to the measured response is neutron inelastic scattering on 79 Br, 81 Br and 139 La. An extrapolation of the count rate response to 14 MeV neutrons from deuterium-tritium plasmas is also presented. The results are of relevance for the design of γ-ray diagnostics of fusion burning plasmas.carlo.cazzaniga@mib.infn.it 1

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“…Fusion-produced triton has long been used to infer the confinement properties of α-particle in tokamaks [1,2]. For this reason, 1 MeV tritons produced from d(d, p)t fusion reaction is suitable for simulating α-particle transport since the ratio between gyro radius to the minor radius (ρ/a) is similar within the same equilibrium [3].…”

Section: Introductionmentioning

confidence: 99%

Estimating Ripple Transport of Moderately-Confined Fast Tritons by D-D Fusion in JT-60SA Tokamak

Kurniawan

Tsutsui

Tani

et al. 2020

Plasma and Fusion Research

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The 1 MeV fast triton transport is analyzed under the presence of magnetic ripple in JT-60SA operation scenario #3 which is expected to employ DD plasma. Particle trajectories were followed using both guidingcenter (GC) and full-orbit (FO) equation schemes and the results were compared. We found that there was a small difference between the toroidal precession angles or the banana tip positions obtained by GC and FO schemes. Consequently, the ripple-resonance energies estimated by both schemes were different. Although the resonance energies were somewhat different, there is no significant difference between the resonance island size and diffusion coefficients obtained by the GC and FO schemes. Because the resonance energies in the GC scheme are somewhat different from those of the FO scheme, the GC scheme should be carefully applied to the evaluation of tritons confinement in JT-60SA.

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Triton burn-up neutron emission in JET low current plasmas

Cited by 13 publications

References 26 publications

Single crystal diamond detector measurements of deuterium-deuterium and deuterium-tritium neutrons in Joint European Torus fusion plasmas

Single crystal diamond detector measurements of deuterium-deuterium and deuterium-tritium neutrons in Joint European Torus fusion plasmas

Response of LaBr3(Ce) scintillators to 2.5 MeV fusion neutrons

Estimating Ripple Transport of Moderately-Confined Fast Tritons by D-D Fusion in JT-60SA Tokamak

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