EVALUATION OF CORRECTIONS FOR SPHERICAL-SHELL NEUTRON TRANSMISSION EXPERIMENTS BY THE MONTE-CARLO TECHNIQUE

Authors & Affiliations

Devkin B.V.1, Kobozev M.G.1, Simakov S.P.1, Fischer U.2, Kappler F.2, Mollendorff U. von2

1Institute of Physics and Power Engineering, Obninsk, Russia
2Forschungszentrum Karlsruhe GmbH, Institut fur Neutronenphysik und Reaktortechnik,Karlsruhe, Germany

Abstract

The influence of some experimental factors on the measured quantities in neutron spherical-shell transmission benchmark experiments was estimated by simulating the corresponding components of the set-up (materials near the neutron source, collimator and shield of the detector etc.) as well as the specific measuring technique (time-of-flight spectrometry) in Monte-Carlo calculations. The calculations were performed by the MCNP code with nuclear data from the EFF-1 and FENDL-1 libraries. The corrections describing the effects of several distinct experimental details were evaluated.

Keywords
Monte Carlo method, leakage neutron spectrum, the program MCNP-4a, the time of flight method, libraries EFF-1 and FENDL-1

Article Text (PDF, in English)

References

UDC 539.125.5

Problems of Atomic Science and Technology. Series: Nuclear Constants", issue 1, 1997