Abstract
In-system foil activation rates and tritium production rates were measured in an experimental lithium-lead module (EL2M)- major component being a 62-cm thick pseudo-cylindrical region containing lithium and lead pellets so arranged as to simulate Li17Pb8.3 eutectic—at fusion blanket neutronics facility LOTUS. Sets of two foils each—Zr and In—were irradiated at multiple locations in the central rod to measure90Zr(n,2n)89m+gZr and115In(n,n′)115mIn reaction rates. Tritium measurements were done using two techniques: off-line liquid scintillation technique of Dierck and online lithium glass scintillation technique, the latter technique providing only T6 (tritium from6Li). These measurements have been analyzed both by two-dimensional and three-dimensional transport codes DORT and MCNP, respectively. Though computed results broadly reproduce spatial profiles (along the central rod) of the measured quantities, differences as large as 50% are found.
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Azam, S., Kumar, A. Measurement and analysis of integral fusion neutronics data on simulated experimental lithium-lead module at the LOTUS facility. J Fusion Energ 13, 59–67 (1994). https://doi.org/10.1007/BF02214049
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DOI: https://doi.org/10.1007/BF02214049