2D PERT. A TWO-DIMENSIONAL PERTURBATION CODE

Technical Report · Tue May 01 04:00:00 EDT 1962

DOI:https://doi.org/10.2172/4778306· OSTI ID:4778306

Chaumont, J. M.; Koerner, J. A.

Given multigroup fluxes and adjoint fluxes of any cylindrical R-Z configuration, 2D PERT may compute: the prompt-neutron lifetime; the relative worth of various delayed neutrons; the integrals of capture, fission, etc., of given materials over any given region; local perturbations, i.e., danger coefflcients; and integrated perturbations, i.e., reactivity effect of uniform variation in the cross sections affecting a whole region. 2D PERT is programmed for a 32K IBM-704 using 3 tape units. The code is written in FORTRAN with the exception of two SAP subroutines. Input fluxes and adjoint fluxes are on tapes which may be obtained either directly from CUREM output or manufactured by a special tape-writing routine. Homogeneous cross sections and variations of these cross sections are either read in as input information or are computed by the code from a microscopic-cross-section library and atomic densities given as input. A combination of these methods may be used. (auth)

• Research Organization: Argonne National Lab., Ill.
• DOE Contract Number: W-31109-ENG-38
• NSA Number: NSA-16-031196
• OSTI ID: 4778306
• Report Number(s): ANL-6555
• Country of Publication: United States
• Language: English

Related Subjects

CAPTURE
COMPUTERS
CONFIGURATION
CROSS SECTIONS
CYLINDERS
DELAYED NEUTRONS
DENSITY
FISSION
GROUP THEORY
LIFETIME
NEUTRON FLUX
PERTURBATION THEORY
PROGRAMMING
PROMPT NEUTRONS
QUANTITY RATIO
REACTIVITY
REACTOR CORE
REACTOR TECHNOLOGY
RECORDING SYSTEMS
VARIATIONS