NEA-0530 FANAC. (Abstract last modified 01-DEC-1981)
1.
NAME OR DESIGNATION OF PROGRAM - FANAC. 2.
COMPUTER FOR WHICH PROGRAM IS DESIGNED AND OTHER MACHINE VERSION PACKAGES AVAILABLE -
To request or retrieve programs click on the one of the active versions below.
A password and special authorization is required. Explanation of the status codes.
Machines used:
Package-ID Orig.Computer Test Computer
NEA-0530/01 IBM 3033 IBM 3033
3.
NATURE OF PHYSICAL PROBLEM SOLVED - Resonance parameter determination by multi-level shape analysis of neutron capture yield data. 4.
METHOD OF SOLUTION - Simultaneous least-squares fit to several sets of time-of-flight (TOF) capture data. Reich-Moore cross section formalism for s-wave, single-level Breit-Wigner formalism for p-, d- ... wave resonances. Monte Carlo calculation of second-, third- etc. collision yields. Numerical resolution broadening. 5.
RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM - The code was written for light- and medium-mass nuclei (or nearly magic nuclei), e.g. structural materials like iron, nickel, ... or lead. Doppler broadening is neglected for s-wave resonances, level-level and resonant-potential interference for p-, d-, ... wave levels. The sample is taken as a cylindrical disc with its axis parallel to the neutron beam. Scattering anisotropy in the c.m.s. frame is neglected. The programme accepts up to 5 TOF data sets (which may differ with respect to sample thickness and radius, energy range, instrumental resolution etc.), 200 cross section parameters (20 of them adjustable) and 512 data points (with uncertainties). Gaussian or chi-squared resolution function. 6.
TYPICAL RUNNING TIME - 2-20 min. on IBM/370-168 for 3-4 iterations. 7.
UNUSUAL FEATURES OF THE PROGRAM - High speed due to hybrid resonance formalism (see above under 4.). Automatic internal mesh determination. No regular energy or flight-time grid required for input data. Conveniently structured input containing only physics information (no numbers of cards, points, resonances etc.), same resonance cards as for transmission shape analysis code FANAL, KFK 2129. Importance sampling in the Monte Carlo simulation of multiple scattering. Two-channel Reich-Moore formulae for inelastic scattering. 8.
RELATED AND AUXILIARY PROGRAMS - KFK plot subroutine PLOTA must be replaced by similar subroutine or dummy outside KFK. Necessary instructions are given on comment cards. 9.
STATUS 10.
REFERENCES - 11.
MACHINE REQUIREMENTS - 476k bytes of core memory space. 12.
PROGRAMMING LANGUAGE(S) USED - 13.
OPERATING SYSTEM OR MONITOR UNDER WHICH PROGRAM IS EXECUTED - IBM 14.
ANY OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS - Random number generator RANDU must be replaced by equivalent where unavailable for generation of random numbers in the interval 0...1. 15.
NAME AND ESTABLISHMENT OF AUTHOR - 16.
MATERIAL AVAILABLE - 17.
CATEGORIES - Keywords: BREIT-WIGNER FORMULA, COLLISIONS, CROSS SECTIONS, LEAST SQUARE FIT, MONTE CARLO METHOD, MULTILEVEL ANALYSIS, REICH-MOORE FORMULA, RESONANCE SCATTERING
Program-name Package-ID Status
FANAC NEA-0530/01 Tested
NEA-0530/01: 01-DEC-1981 Tested at NEADB
- F.H. Froehner:
KFD 2145 (1977), see also KFK 2669 (1978).
NEA-0530/01:
NEA-0530/01: FORTRAN-IV
OS, ASP.
F.H. Froehner, INR
Kernforschungszentrum, Postfach 3640
D-7500 Karlsruhe, West Germany
NEA-0530/01:
NEA0530_01.001 INFORMATION 30 records
NEA0530_01.002 JOB CONTROL 94 records
NEA0530_01.003 ASSEMBLER RANDOM NUMBER GENERATOR ROUTINE 18 records
NEA0530_01.004 FANAC FORTRAN SOURCE 1740 records
NEA0530_01.005 SAMPLE PROBLEM INPUT 204 records
NEA0530_01.006 SAMPLE PROBLEM OUTPUT 3958 records
- A. Cross Section and Resonance Integral Calculations
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