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Träfflista för sökning "WFRF:(Wallenius Janne 1968 ) srt2:(2010-2014)"

Sökning: WFRF:(Wallenius Janne 1968 ) > (2010-2014)

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1.
  • Suvdantsetseg, Erdenechimeg, 1983-, et al. (författare)
  • An assessment of prompt neutron reproduction time in a reflector dominated fast critical system : ELECTRA
  • 2014
  • Ingår i: Annals of Nuclear Energy. - : Elsevier BV. - 0306-4549 .- 1873-2100. ; 71, s. 159-165
  • Tidskriftsartikel (refereegranskat)abstract
    • In this paper, an accurate method to evaluate the prompt neutron reproduction time for a reflector dominated fast critical reactor, ELECTRA, is discussed. To adequately handle the problem, explicit time dependent Monte Carlo calculations with MCNP, applying repeated time cut-off technique, is used and compared against the σ ∼ 1/v time dependent absorber method, applying artificial cross section data in the Monte Carlo code SERPENT. The results show that when a reflector plays a major role in criticality for fast neutron reactor, the two methods predict different physical parameters (Λ = 69 ± 2 ns and Λ = 83 ± 1 ns for time cut-off and the 1/v method respectively). The reason is explained by applying Avery-Cohn’s two-region prompt neutron model. 
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2.
  • Suvdantsetseg, Erdenechimeg, 1983-, et al. (författare)
  • Optimization of the reactivity control drum system of ELECTRA
  • 2012
  • Ingår i: Nuclear Engineering and Design. - : Elsevier. - 0029-5493 .- 1872-759X. ; 252:1, s. 209-214
  • Tidskriftsartikel (refereegranskat)abstract
    • In this paper, an optimized control drum system for the European Lead Cooled Training Reactor (ELECTRA) is proposed. By changing the number of rotating drums from 6 to 12, we succeed in reducing the maximum rotational worth of a single drum from 4 $ to 1.64 $. As a consequence, the safety margin during reactivity insertions is significantly improved.
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