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Title: Neutron transport analysis for nuclear reactor design

Replacing regular mesh-dependent ray tracing modules in a collision/transfer probability (CTP) code with a ray tracing module based upon combinatorial geometry of a modified geometrical module (GMC) provides a general geometry transfer theory code in two dimensions (2D) for analyzing nuclear reactor design and control. The primary modification of the GMC module involves generation of a fixed inner frame and a rotating outer frame, where the inner frame contains all reactor regions of interest, e.g., part of a reactor assembly, an assembly, or several assemblies, and the outer frame, with a set of parallel equidistant rays (lines) attached to it, rotates around the inner frame. The modified GMC module allows for determining for each parallel ray (line), the intersections with zone boundaries, the path length between the intersections, the total number of zones on a track, the zone and medium numbers, and the intersections with the outer surface, which parameters may be used in the CTP code to calculate collision/transfer probability and cross-section values. 28 figures.
Inventors:
Issue Date:
OSTI Identifier:
5312171
Assignee:
Univ. of Chicago, Chicago, IL (United States) PTO; EDB-94-051690
Patent Number(s):
US 5267276; A
Application Number:
PPN: US 7-792145
Contract Number:
W-31109-ENG-38
Resource Relation:
Patent File Date: 12 Nov 1991
Country of Publication:
United States
Language:
English
Subject:
22 GENERAL STUDIES OF NUCLEAR REACTORS; NEUTRON TRANSPORT; C CODES; REACTOR KINETICS; FUEL ASSEMBLIES; MODIFICATIONS; REACTOR CORES; COMPUTER CODES; KINETICS; NEUTRAL-PARTICLE TRANSPORT; RADIATION TRANSPORT; REACTOR COMPONENTS; 220100* - Nuclear Reactor Technology- Theory & Calculation