1. NAME AND TITLE
BIGGI-4T: Gamma Transport in Multi-Region Shield in Planar or Spherical Geometry.
des Communautes Europeenes 21020 - Ispra (Varese) Italy through the OECD
Nuclear Energy Agency Data Bank, Issy-les-Moulineaux, France.
3. CODING LANGUAGE AND COMPUTER
Fortran IV; IBM 360 Series (C00780I036000).
4. NATURE OF PROBLEM SOLVED
Boltzmann's transport equation (in integral form) is solved numerically for gamma rays in plane or spherical geometry.
5. METHOD OF SOLUTION
Each of the three dimensions (space, energy, angle) is described by a mesh point set, and the integrals in the transport equation are approximated by sums.
6. RESTRICTIONS OR LIMITATIONS
At most 51 energy groups, 9 angular mesh points, 9 materials, 9 regions, 30 elements in the library, 9 source energies, 6 wavelength steps, 4 arbitrary response functions. Upper limit for spatial points is 39 in the version for the IBM 7090 and 90 in that for the IBM 360/65.
7. TYPICAL RUNNING TIME
On the IBM 7090 (if no tapes are used) about 20-30 sec per spatial point.
8. COMPUTER HARDWARE REQUIREMENTS
IBM 360 or IBM 370 mainframe.
9. COMPUTER SOFTWARE REQUIREMENTS
a) Included Documentation
Hans Penkuhn: “User’s Manual for the Gamma Transport Codes BIGGI 3P and BIGGI 4T”.
b) Background Documentation:
U. Canali et al.: Research on Radiation Shielding Reprint from EUR 1643e.
Hans Penkuhn: For Further Development of the Gamma Transport Code BIGGI4 (in German) Reprint ATKE 12-12 (81-84) 1967.
H. Penkuhn: "BIGGI A Generalized Gamma Transport Program" Informal notes.
H. Penkuhn ; "A Numerical Solution of the Boltzmann Equation Applied to Concrete Slabs" EUR 2488.e (1965)
H.Penkuhn: "Provisory Description of the gamma Transport Program BIGGI 3 P" Informal notes.
11. CONTENTS OF CODE PACKAGE
The package is distributed on a CD with a compressed zip file including source files, data and output.
12. DATE OF ABSTRACT
KEYWORDS: GAMMA RADIATION, R-THETA-Z, SHIELDING, TRANSPORT THEORY, X-Y