Induced nuclear reactions: processes – systems – and elements – With control of reactor – By electronic signal processing circuitry
Patent
1991-11-12
1993-11-30
Walsh, Donald P.
Induced nuclear reactions: processes, systems, and elements
With control of reactor
By electronic signal processing circuitry
376216, G21C 736
Patent
active
052672760
ABSTRACT:
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.
REFERENCES:
patent: 4877575 (1989-10-01), Impink, Jr. et al.
patent: 4990302 (1991-02-01), Oda et al.
Collision Probability Method in Arbitrary Geometries: Preliminary Results, Vujic et al., Summary of paper to be presented at the 1990 ANS Winter Metting, Nov. 11-15, 1990, Washington, D.C.
The University of Chicago
Voss Frederick H.
Walsh Donald P.
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