Results 181 to 190 of about 105,114 (238)
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Investigation and comparison of neutron image quality using monochromatic and polychromatic beams of Tehran Research Reactor by Monte Carlo simulation

, 2021
Neutron radiography (NR) is a non-destructive testing (NDT) method which uses a neutron beam for materials investigation in the research and industrial application.
F. S. Fakhr   +4 more
semanticscholar   +1 more source

Design, construction and characterization of a new neutron beam for neutron radiography at the Tehran Research Reactor

Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2016
M. Dastjerdi   +6 more
semanticscholar   +3 more sources

Calculation and Measurement of Kinetics Parameters of Tehran Research Reactor

Volume 5: Fuel Cycle and High and Low Level Waste Management and Decommissioning; Computational Fluid Dynamics (CFD), Neutronics Methods and Coupled Codes; Instrumentation and Control, 2009
Effective delayed neutron fraction βeff and neutron generation time Λ are important factors in reactor physics calculation and transient analysis. In first stage of this research, these kinetics parameters have been calculated for two states of Tehran research reactor (TRR), i.e.
Seyed Abolfazl Hosseini   +3 more
  +4 more sources

Feasibility study for Tehran Research Reactor power upgrading

Annals of Nuclear Energy, 2008
Abstract The present work is concerned with a power upgrading study of Tehran Research Reactor (TRR). The upgrading study is aimed at investigating the possibility of raising power of the TRR from the current level of 5 MW th to a higher level without violating the original thermal-hydraulic safety criteria. The existing core, comprising 22 standard
Kazem Farhadi, Samad Khakshournia
openaire   +1 more source

Neutronic Analysis for Tehran Research Reactor Upgrading

10th International Conference on Nuclear Engineering, Volume 4, 2002
This paper presents preliminary results of a study undertaken to investigate the possibility of raising the power of Tehran Research Reactor (TRR) from 5 to 10 MW (th), keeping the same core configuration and with minimum changes in the primary cooling circuit. The main aim of TRR upgrade is to increase the volume of radioisotope production.
Ebrahim Afshar, Alireza Shahidi
openaire   +1 more source

Study on secondary shutdown systems in Tehran research reactor

Nuclear Engineering and Design, 2015
Abstract One important safety aspect of any research reactor is the ability to shut down the reactor. Usually, research reactors, currently in operation, have a single shutdown system based on the simultaneous insertion of the all control rods into the reactor core through gravity.
H.R. Jalali, A.H. Fadaei, M. Gharib
openaire   +1 more source

Cold neutron source conceptual designing for Tehran Research Reactor

Annals of Nuclear Energy, 2016
Abstract A cold neutron source (CNS) conceptual designing for the Tehran Research Reactor (TRR) were carried out using MCNPX code. In this study, a horizontal beam tube of the core which has appropriate the highest thermal flux is selected and parametric analysis to choose the type and geometry of the moderator, and the required CNS dimensions for ...
N. Khajvand, S.M. Mirvakili, F. Faghihi
openaire   +1 more source

Neutronic and thermal-hydraulic analysis of fission molybdenum-99 production at Tehran Research Reactor using LEU plate targets.

Applied Radiation and Isotopes, 2016
E. Abedi   +5 more
semanticscholar   +3 more sources

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