DEPRESSION OF THE NUCLEAR PROPERTIES OF FUSION REACTOR BREEDING BLANKETS BY INHOMOGENEITIES
The calculations are carried out using the VINIA 3DAMTC subroutine complex especially developed for the treatment of fusion reactors on large computers; the first results have recently been presented. The VINIA 3DAMTC is a 3-D analogical Monte Carlo treatment, with a continuous energy and space representation, using different data files (in ENDF/B format) in the point by point representation without group treatment and no truncation introduced on the data of the files! The above subroutine complex in fact follows the history of the neutrons in the blanket, randomly selecting the place and direction of the neutron emission, its consecutive interactions with the constituting nuclei, and accounting for the angular and energy distributions of the reaction products. The one approximation used is the neutron history extinction as the energy falls below a cut-off energy; a sensitivity analysis showed that an energy cutoff of 0.1 eV introduces negligible errors. To study non-homogeneity effects, the geometrical model was further extended to include 7 tori zones, 12 toroidal cooling tubes, 24 disks and 24 sectors, typical elements of present day designs. The aim of the present study is to identify tendencies in the evolution of nuclear parameters as nonhomogeneities are introduced into the blanket.
Bibliographic Reference: 11TH EUROPEAN CONFERENCE ON CONTROLLED FUSION AND PLASMA PHYSICS, AACHEN (GERMANY), SEPT. 5-9, 1983 IN ENEA REPORT 83.23/CC, PP. 46-49, 1983 WRITE TO ENEA + CENTRO RICERCHE ENERGIA FRASCATI, SERVIZIO STUDI E DOCUMENTAZIONE, C.P. 65 00044 FRASCATI, ROMA (I
Record Number: 1989122047700 / Last updated on: 1987-01-01
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