Neutron streaming through a slit and duct in concrete shields and comparison with a Monte Carlo analysis

Journal Article · Mon Aug 01 04:00:00 EDT 1983 · Nucl. Sci. Eng.; (United States)

OSTI ID:6380861

Hashikura, H; Akiyama, M; An, S; Fukumoto, H; Oka, Y

A series of measurements of about14-MeV deuterium-tritium neutrons streaming through a slit and a duct in concrete shields has been carried out using a Cockcroft-Walton-type neutron generator. Measured neutron energy spectra are compared with calculations in six configurations of the shields. The configurations are the simplified geometries of streaming paths of tokamak reactors, such as a divertor throat and a neutral beam injection port. The measured data were obtained with an NE-213 liquid scintillator using pulse shape discrimination methods to resolve neutron and gamma-ray pulse height data and using a spectral unfolding code to convert these data to energy spectra. The experiments were analyzed by a Monte Carlo code. The calculated neutron energy spectra slightly underestimate the measured data, especially in the range of 6 to 8 MeV. The agreement between the calculated and measured integral flux above 2.2 MeV ranges from 87.5 to 72.7% depending on the configurations.

• Research Organization: The University of Tokyo, Nuclear Engineering Research Laboratory, Tokai-mura, Ibaraki
• OSTI ID: 6380861
• Journal Information: Nucl. Sci. Eng.; (United States), Journal Name: Nucl. Sci. Eng.; (United States) Vol. 84:4; ISSN NSENA
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
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ACCELERATORS
BARYONS
BEAM INJECTION
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BUILDING MATERIALS
COCKCROFT-WALTON ACCELERATORS
COMPARATIVE EVALUATIONS
CONCRETES
DATA COVARIANCES
DATA PROCESSING
DEUTERIUM
DEUTERIUM COMPOUNDS
DEUTERIUM TRITIDES
DISCRIMINATORS
DIVERTORS
ELECTRONIC CIRCUITS
ELECTROSTATIC ACCELERATORS
ELEMENTARY PARTICLES
ENERGY RANGE
FERMIONS
HADRONS
HYDROGEN COMPOUNDS
HYDROGEN ISOTOPES
ISOTOPES
LABELLED COMPOUNDS
LIGHT NUCLEI
LIQUID SCINTILLATORS
MATERIALS
MEV RANGE
MONTE CARLO METHOD
NEUTRAL ATOM BEAM INJECTION
NEUTRAL-PARTICLE TRANSPORT
NEUTRON SOURCES
NEUTRON SPECTRA
NEUTRON TRANSPORT
NEUTRONS
NUCLEI
NUCLEONS
ODD-EVEN NUCLEI
ODD-ODD NUCLEI
OPENINGS
PARTICLE SOURCES
PHOSPHORS
PROCESSING
PULSE CIRCUITS
PULSE DISCRIMINATORS
RADIATION SOURCES
RADIATION STREAMING
RADIATION TRANSPORT
RADIOISOTOPES
SPECTRA
SPECTRA UNFOLDING
STABLE ISOTOPES
THERMONUCLEAR REACTORS
TOKAMAK TYPE REACTORS
TRITIUM
TRITIUM COMPOUNDS
YEARS LIVING RADIOISOTOPES