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Comparative analysis for Phase IIA and IIB experiments of the U. S. /JAERI collaborative program on fusion blanket neutronics

Conference · · Fusion Technol.; (United States)
OSTI ID:6277155
; ; ; ; ; ;
Several fusion-oriented integral experiments were performed in Phase II of the U.S./JAERI Collaborative Program on Fusion Neutronics where the geometrical configurations and source condition closely simulate the incident spectrum in fusion reactors. The main objective of the program is to estimate the uncertainties involved in predicting tritium breeding rate in Li/sub 2/O and other neutronics parameters in fusion blanket that include engineering features (i.e., first wall, multiplier). In Phase II, the Li/sub 2/O test assembly is placed in one end of a Li/sub 2/CO/sub 3/ enclosure that houses the D-T neutron source. Predicted local and integrated tritium production rates (TPR) from /sup 6/Li (T/sub 6/), /sup 7/Li (T/sub 7/) and natural lithium (T/sub N/) were compared to measurements in various configurations that included reference, first wall and beryllium multiplier experiments (Phase IIA) in addition to repeating these experiments with a FW/Be layer covering the interior surface of the Li/sub 2/CO/sub 3/ enclosure (Phase IIB). Other neutronics parameters that included source characterization by foil measurements, in-system reaction rates, and in-system spectrum measurements were also analyzed. The analyses were carried out independently by both parties using various 3-D Monte Carlo codes and 2-D discrete ordinates codes and data libraries. The results of the analyses are reported in this paper with emphasis placed on the impact of the beryllium data on the discrepancies found between predictions and measurements.
Research Organization:
UCLA, Los Angeles, CA (US); Japan Atomic Energy Research Institute, Tokai-mura, Naka-gun, Ibaraki-ken (JP)
OSTI ID:
6277155
Report Number(s):
CONF-881031-
Conference Information:
Journal Name: Fusion Technol.; (United States) Journal Volume: 15:2
Country of Publication:
United States
Language:
English

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Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700201 -- Fusion Power Plant Technology-- Blanket Engineering
700205* -- Fusion Power Plant Technology-- Fuel
Heating
& Injection Systems
ALKALI METAL COMPOUNDS
ALKALI METAL ISOTOPES
ALKALINE EARTH METALS
BERYLLIUM
BREEDING BLANKETS
BREEDING RATIO
CALCULATION METHODS
CARBON COMPOUNDS
CARBONATES
COMPUTER CODES
CONVERSION RATIO
DATA
DISCRETE ORDINATE METHOD
ELECTRON MULTIPLIERS
ELECTRON TUBES
ELEMENTS
ENGINEERING
EXPERIMENTAL DATA
FIRST WALL
INFORMATION
IRRADIATION REACTORS
ISOTOPES
JAERI
JAPANESE ORGANIZATIONS
LIGHT NUCLEI
LITHIUM 6
LITHIUM 7
LITHIUM CARBONATES
LITHIUM COMPOUNDS
LITHIUM ISOTOPES
MEASURING INSTRUMENTS
METALS
MICROCHANNEL ELECTRON MULTIPLIERS
MONTE CARLO METHOD
NATIONAL ORGANIZATIONS
NEUTRON ACTIVATION ANALYZERS
NUCLEI
NUMERICAL DATA
ODD-EVEN NUCLEI
ODD-ODD NUCLEI
OXYGEN COMPOUNDS
PARAMETRIC ANALYSIS
REACTOR COMPONENTS
REACTORS
RESEARCH PROGRAMS
STABLE ISOTOPES
THERMONUCLEAR REACTOR WALLS
THREE-DIMENSIONAL CALCULATIONS
TRITIUM PRODUCTION REACTORS
TWO-DIMENSIONAL CALCULATIONS
UNCERTAINTY PRINCIPLE
US DOE
US ORGANIZATIONS