Measurement of the Gamma-Ray-to-Neutron Branching Ratio for the Deuterium-Tritium Reaction in Magnetic Confinement Fusion Plasmas

Dal Molin, A.; Marcer, G.; Nocente, M.; Rebai, M.; Rigamonti, D.; Angelone, M.; Bracco, A.; Camera, F.; Cazzaniga, C.; Craciunescu, T.; Croci, G.; Dalla Rosa, M.; Giacomelli, L.; Gorini, G.; Kazakov, Y.; Khilkevitch, E. M.; Muraro, A.; Panontin, E.; Perelli Cippo, E.; Pillon, M.; Putignano, O.; Scionti, J.; Shevelev, A. E.; Žohar, A.; Tardocchi, M.

doi:10.1103/physrevlett.133.055102

Phys. Rev. Lett.

2024

DOI: 10.1103/physrevlett.133.055102

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Measurement of the Gamma-Ray-to-Neutron Branching Ratio for the Deuterium-Tritium Reaction in Magnetic Confinement Fusion Plasmas

A. Dal Molin,

G. Marcer,

M. Nocente

et al.

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Cited by 6 publications

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Learning from each other: Cross-cutting diagnostic development activities between magnetic and inertial confinement fusion (invited)

Gatu Johnson,

Schlossberg,

Appelbe

et al. 2024

Review of Scientific Instruments

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Inertial Confinement Fusion and Magnetic Confinement Fusion (ICF and MCF) follow different paths toward goals that are largely common. In this paper, the claim is made that progress can be accelerated by learning from each other across the two fields. Examples of successful cross-community knowledge transfer are presented that highlight the gains from working together, specifically in the areas of high-resolution x-ray imaging spectroscopy and neutron spectrometry. Opportunities for near- and mid-term collaboration are identified, including in chemical vapor deposition diamond detector technology, using gamma rays to monitor fusion gain, handling neutron-induced backgrounds, developing radiation hard technology, and collecting fundamental supporting data needed for diagnostic analysis. Fusion research is rapidly moving into the igniting and burning regimes, posing new opportunities and challenges for ICF and MCF diagnostics. This includes new physics to probe, such as alpha heating; increasingly harsher environmental conditions; and (in the slightly longer term) the need for new plant monitoring diagnostics. Substantial overlap is expected in all of these emerging areas, where joint development across the two subfields as well as between public and private researchers can be expected to speed up advancement for all.

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Learning from each other: Cross-cutting diagnostic development activities between magnetic and inertial confinement fusion (invited)

Gatu Johnson,

Schlossberg,

Appelbe

et al. 2024

Review of Scientific Instruments

View full text Add to dashboard Cite

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Observation of alpha-particles in recent D–T experiments on JET

Kiptily,

Challis,

Dumont

et al. 2024

Nucl. Fusion

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The fusion reaction between deuterium and tritium, D(T,n)4He is the main source of energy in future thermonuclear reactors. Alpha-particles (4He-ions) born with an average energy of 3.5MeV transferring energy to the thermal plasma during their slowing down, should provide the self-sustained D-T plasma burn. The adequate confinement of α-particles is essential to provide efficient heating of the bulk plasma and steady burning of a reactor plasma. That is why the fusion-born α-particle studies have been a priority task in the second D-T experiments (DTE2) on JET to understand the main mechanisms of their slowing down, redistribution and losses and to develop optimal plasma scenarios. JET, with the ITER-like wall (Be-wall and W-divertor), enhanced auxiliary heating systems and improved energetic-particle diagnostic capabilities, producing significant population of α-particles, provided the possibility for comprehensive studying of the α-particle behaviour. Selected results of the confined and lost α-particle measurements, evidence of α-particle self-heating and assessments of the fusion performance are presented in this paper giving an opportunity for further modelling and extrapolation to ITER and burning plasma reactors.

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Measuring Fusion Power

Day

2024

Physics

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Measurement of the Gamma-Ray-to-Neutron Branching Ratio for the Deuterium-Tritium Reaction in Magnetic Confinement Fusion Plasmas

Cited by 6 publications

References 43 publications

Learning from each other: Cross-cutting diagnostic development activities between magnetic and inertial confinement fusion (invited)

Learning from each other: Cross-cutting diagnostic development activities between magnetic and inertial confinement fusion (invited)

Observation of alpha-particles in recent D–T experiments on JET

Measuring Fusion Power

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