NEA-0188 BIGGI-4T.

BIGGI-4T, Gamma Transport in Multi-Region Shield in Planar or Spherical Geometry

NAME OR DESIGNATION OF PROGRAM, COMPUTER, NATURE OF PHYSICAL PROBLEM SOLVED, METHOD OF SOLUTION, RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM, TYPICAL RUNNING TIME, UNUSUAL FEATURES OF THE PROGRAM, RELATED AND AUXILIARY PROGRAMS, STATUS, REFERENCES, MACHINE REQUIREMENTS, LANGUAGE, OPERATING SYSTEM OR MONITOR UNDER WHICH PROGRAM IS EXECUTED, ANY OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS, NAME AND ESTABLISHMENT OF AUTHOR, MATERIAL, CATEGORIES

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1. NAME OR DESIGNATION OF PROGRAM: BIGGI-4T.
(Boltzmans integralgleichung fuer Gamma-Intensitaeten, version 4,
with tapes), abbreviated B4T.

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2. COMPUTERS

To submit a request, click below on the link of the version you wish to order. Rules for end-users are available here.

Program name	Package id	Status	Status date
BIGGI-4T	NEA-0188/02	Tested	20-AUG-1998

Machines used:

Package ID	Orig. computer	Test computer
NEA-0188/02	IBM 360 series	IBM 360 series

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3. NATURE OF PHYSICAL PROBLEM SOLVED

Boltzmann's transport equation (in integral form) is solved numerically for gamma rays in plane or spherical geometry.

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4. 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.

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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM

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.

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6. TYPICAL RUNNING TIME

On the IBM 7090 (if no tapes are used) about 20-30 sec per spatial point.

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7. UNUSUAL FEATURES OF THE PROGRAM

The exponential transformation allows the choice of large spatial steps in thick source-free shield regions, up to about 2 mfp, so a shield 20 mfp thick can be calculated in a time of about 5 min on the IBM 7090, and in much less on the IBM 360/65.

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8. RELATED AND AUXILIARY PROGRAMS

B4T is an extension of B3P (both described in EUR 3555E). Auxiliary programmes are not used.

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9. STATUS

Package ID	Status date	Status
NEA-0188/02	20-AUG-1998	Tested at NEADB

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10. REFERENCES:

NEA-0188/02, included references:

- Hans Penkuhn:
  Users Manual for the Gamma Transport Codes BIGGI 3P and BIGGI 4T.
  (for further references see p. 63, refs. 1, 2 9a and 9b).
  EUR 3555e (1967).
- 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.

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11. MACHINE REQUIREMENTS

For the IBM-7090-version:32-k-core, 4 scratch tapes. For the IBM-360/65-version:512-k-core (in bytes), 4 scratch tapes or disks. The standard input-output equipment is used.

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12. PROGRAMMING LANGUAGE(S) USED

Package ID	Computer language
NEA-0188/02	FORTRAN-IV

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13. OPERATING SYSTEM OR MONITOR UNDER WHICH PROGRAM IS EXECUTED:
Standard.

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14. ANY OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS

Since no overlay is used, a change to other operating systems is not difficult.

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15. NAME AND ESTABLISHMENT OF AUTHOR

           Hans Penkuhn
           Commission des Communautes Europeenes
           21020 - Ispra (Varese) Italy

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16. MATERIAL AVAILABLE

NEA-0188/02