Estimation of 14 MeV neutron rate from triton burn-up in future W7-X deuterium plasma campaigns

Tutkimustuotos: LehtiartikkeliArticleScientificvertaisarvioitu

3 Sitaatiot (Scopus)

Abstrakti

Fast ion confinement is of major importance for the ignition of a burning fusion plasma. In future deuterium plasma campaigns of the Wendelstein 7-X stellarator, W7-X, the amount of triton burn-up is one possible measure for fast ion confinement. A well-established technique to observe triton burn-up is the 14 MeV neutron rate. In this paper, it is estimated whether an existing scintillating fibre neutron detector is also suited to measure triton burn-up in W7-X with sufficient accuracy. An estimation is presented, which can be applied to any tokamak or stellarator design and is one-dimensional in the minor radius. The inputs are profiles of density, temperature, and differential volume element as well as the triton slowing-down time. The estimation calculates the thermal deuteron fusion rate and the associated deuteron-triton fusion rate; thus, the triton burn-up generated 14 MeV neutron rate. It neither takes triton diffusion nor explicit losses into account. This thermally generated fusion rate is compared to the neutral beam injection heating induced beam-plasma fusion rate.

AlkuperäiskieliEnglanti
Artikkeli201900186
Sivumäärä9
JulkaisuContributions to Plasma Physics
Vuosikerta60
Numero8
Varhainen verkossa julkaisun päivämäärä1 tammikuuta 2020
DOI - pysyväislinkit
TilaJulkaistu - syyskuuta 2020
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

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