last modified: 01-APR-1971 | catalog | categories | new | search |

DLC-0016 ZZ-DLC-16/COBB.

ZZ DLC-16 COBB, 123 Neutron-Group Cross-Section Library from ENDF/B for XSDRN Calculation

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1. NAME OR DESIGNATION OF PROGRAM:  ZZ-DLC-16/COBB. 123-group neutron cross section data generated from ENDF/B-2 data for use in the XSDRN discrete ordinates spectral averaging code.
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2. COMPUTERS
To submit a request, click below on the link of the version you wish to order. Only liaison officers are authorised to submit online requests. Rules for requesters are available here.
Program name Package id Status Status date
ZZ-DLC-16 DLC-0016/01 Tested 01-APR-1971

Machines used:

Package ID Orig. computer Test computer
DLC-0016/01 Many Computers Many Computers
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3. NATURE OF PHYSICAL PROBLEM SOLVED

  FORMAT: XSDRN

  NUMBER OF GROUPS: 123

NUCLIDES: H, D, He, Be-9, B-10, C-12, O-16, Na-23, Mg, Al-27, Ti, Cr, Mn-55, Fe, Ni, Cu, Cu-63, Cu-65, Nb-93, Mo, Xe-135, Sm-149, Eu-151, Eu-153, Gd, Dy-164, Lu-175, Lu-176, W-182, W-183, W-184, W-186, Re-185, Re-187, Au-197, U-233, U-234, U-235, U-236, U-238, Np-237, Pu-238, Pu-239, Pu-240, Pu-241, Pu-242, Am-241, Am-243, and  Cm-244.

  ORIGIN: Mainly ENDF/B

WEIGHTING SPECTRUM: Fast cross sections -> 1/E (14 Mev to .414 eV)  Thermal cross sections -> 1/E (1.86 eV to 0.125 eV)
-> Maxwell-Boltzmann (0.125 eV to 0.0047 eV)
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
The library is intended to be a source of evaluated data for the cross section preparation code XSDRN. It supplements, rather than replaces, the existing XSDRN master library which is distributed with the code package.
The library contains data for H, D, He, 9-Be, 10-B, 12-C, 16-O, 23-Na, Mg, 27-Al, Ti, Cr, 55-Mn, Fe, Ni, Cu, 63-Cu, 65-Cu, 93-Nb, Mo, 135-Xe, 149-Sm, 151-Eu, 153-Eu, Gd, 164-Dy, 175-Lu, 176-Lu, 182-W, 183-W, 184-W, 186-W, 185-Re, 187-Re, 197-Au, 233-U, 234-U, 235-U, 236-U, 238-U, 237-Np, 238-Pu, 239-Pu, 240-Pu, 241-Pu,  242-Pu, 241-Am, 243-Am, and 244-Cm.
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4. METHOD OF SOLUTION

The library contains ENDF/B version 2 cross sections processed through several steps (primarily by SUPERTOG) into the standard XSDRN 123-group energy structure. These steps are

(a) process fast cross sections with SUPERTOG into standard GAM-2 energy structure (14 MeV to 0.414 eV), using a 1/E weighting function, and produce a GAM-2 tape. (This step was performed by R. Q. Wright, Math Div., ORNL).
(b) Process thermal cross sections with SUPERTOG into standard 30-group THERMOS energy group structure (1.86 eV to 0.0047 eV), using a Maxwell-Boltzmann distribution with temperature 293 deg.K as a weighting function for E < 0.125 eV coupled to a 1/E weighting  function for E from 0.125 eV to 1.86 eV.
(c) Compute room temperature free-gas kernels, using THERMOS tape-making program, and combine with results of step (b) into a THERMOS tape.
(d) Combine the GAM-2 and THERMOS tapes into a 123-group XSDRN tape using an unpublished ORNL code written specifically for this purpose.
The library contains data for a P3 approximation to the angular scattering for all ENDF-B version 2 nuclides except hydrogen.
However, an older set of cross sections for hydrogen in water were included for completeness. Nuclides whose cross sections are not given by ENDF/B in elemental form have been processed both as resonance and infinite dilute cross sections.
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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM
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6. TYPICAL RUNNING TIME

JUANITA - compilation and execution time for converting the entire DLC-16 library from an unformated to a formatted tape was 2 minutes on the IBM 360/91.
SUP, SECS -no running time information available.
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7. UNUSUAL FEATURES: UNUSUAL FEATURES OF THE PROGRAM
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8. RELATED AND AUXILIARY PROGRAMS

JUANITA converts an unformatted XSDRN master library tape to a formatted one, or vice versa.
XSDRN requires an unformatted (binary) tape for input but DLC-16/COBB has been put in formatted (BCD card images) form. SUP can be used to update and SECS to edit an unformatted XSDRN master library tape.
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9. STATUS
Package ID Status date Status
DLC-0016/01 01-APR-1971 Tested at NEADB
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10. REFERENCES

- W.R. Cobb:
  Intra-Library Memo describing library
- N.M. Greene:
  Instructions for Retrieval Programs JUANITA, SUP, and SECS,
  Informal Notes.
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11. HARDWARE REQUIREMENTS: MACHINE REQUIREMENTS
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12. PROGRAMMING LANGUAGE(S) USED
No specified programming language
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13. SOFTWARE REQUIREMENTS: OPERATING SYSTEM OR MONITOR UNDER WHICH PROGRAM IS EXECUTED
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14. ANY OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS:  The current version of DLC-16 is dated January 1971.
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15. NAME AND ESTABLISHMENT OF AUTHOR

Oak Ridge National Laboratory
Union Carbide Corporation
Nuclear Division
Oak Ridge, Tennessee, U.S.A
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16. MATERIAL AVAILABLE
DLC-0016/01
File name File description Records
DLC0016_01.001 XSDRN LIBRARY (77 ELEMENTS) 79872
DLC0016_01.002 JUANITA SOURCE PROGRAM 238
DLC0016_01.003 SUP SOURCE PROGRAM 448
DLC0016_01.004 SECS SOURCE PROGRAM 300
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17. CATEGORIES
  • C. Static Design Studies
  • Z. Data.

Keywords: ENDF/B, cross sections, data, multigroup, neutrons.