Study of the performance of a fast-neutron hodoscope system

Thesis/Dissertation · Fri Jan 01 04:00:00 EST 1982

OSTI ID:6135301

Lee, P S

A fast-neutron hodoscope is a fuel-motion diagnostic neutron-detecting system used to record and process fuel motion data collected during a simulated hypothetical reactor transient experiment. The resulting data help to resolve many key reactor safety-related issues and to provide information useful to fast-reactor fuel designs. The degree of accuracy of these data relies on the hodoscope performance. The ANISN/RESPONSE system is a proposed mathematical method to predict some key parameters of the hodoscope performance: such as (1) signal-to-background ratio, and (2) the signal perturbation due to fuel-mass redistribution. Two calibration experiments associated with the PARKA facility and the TREAT facility were simulated by the ANISN/RESPONSE system. The calculated results give good agreement with the experimental data, providing that the neutron cross sections are accurately processed throughout the whole energy range. A series of ANISN/RESPONSE calculations was carried out to predict the hodoscope performance for the future TREAT-UPGRADE experiments. These calculations will be used as an aid in experiment design and to provide information which will lead to corrections to the hodoscope data for neutron transport effects, thereby increasing the accuracy of fuel-mass displacement.

• Research Organization: Purdue Univ., Lafayette, IN (USA)
• OSTI ID: 6135301
• Country of Publication: United States
• Language: English

Related Subjects

22 GENERAL STUDIES OF NUCLEAR REACTORS
220300* -- Nuclear Reactor Technology-- Fuel Elements
440100 -- Radiation Instrumentation
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
ACCIDENTS
ACCURACY
BARYONS
CROSS SECTIONS
DESIGN
DETECTION
ELEMENTARY PARTICLES
FAST NEUTRONS
FERMIONS
FUEL ELEMENTS
FUEL MOTION DETECTION
HADRONS
HODOSCOPES
MATHEMATICAL MODELS
MEASURING INSTRUMENTS
NEUTRON DETECTORS
NEUTRONS
NUCLEONS
PERFORMANCE
RADIATION DETECTORS
REACTOR ACCIDENTS
REACTOR COMPONENTS
REACTOR CORES
REACTOR MONITORING SYSTEMS
REACTOR SAFETY
SAFETY
SIGNAL-TO-NOISE RATIO
SIMULATION
TRANSIENTS