1. NAME AND TITLE
DETAN 95: Code System to Calculate Spectrum-Averaged Cross Sections and Detector Responses in Neutron Spectra.
ENDF/B-V Dosimetry File (included in package)
National Institute of Standards and Technology, Gaithersburg, Maryland.
3. CODING LANGUAGE AND COMPUTER
FORTRAN 77, CRAY Y-MP; UNIX, WORKSTATIONS; PC (P00361/MNYCP/00).
4. NATURE OF PROBLEM SOLVED
DETAN 95 multiplies an arbitrary neutron spectrum by an arbitrary energy-dependent neutron detector cross section or response function and integrates over energy to determine a spectrum-averaged cross section or response.
5. METHOD OF SOLUTION
DETAN 95 accepts an input neutron spectrum as a tabulated group spectrum or in one of several analytical forms. The code converts the spectrum into a fine-group tabulation. For neutron dosimetry cross sections, the tabulation is made in 625 groups; for other detector functions, the number of fine groups in the spectrum may be determined by the number of groups in the input detector function. The output gives either spectrum-averaged cross sections for a number of detector functions, or a detailed spectrum and response function for a specific detector response. The output energy group structure is specified by the user.
6. RESTRICTIONS OR LIMITATIONS
7. TYPICAL RUNNING TIME
Runtimes vary but generally cases run in a few seconds.
8. COMPUTER HARDWARE REQUIREMENTS
DETAN 95 runs on many computers.
9. COMPUTER SOFTWARE REQUIREMENTS
The PC version of DETAN was tested at RSIC on a Northgate 486/66 running MS Windows 95 using MS FORTRAN v5.1 and Lahey F77L3-EM/32 v5.1 An executable created with Lahey is included.
The Unix version of DETAN was tested at RSIC on the machines listed below:
IBM RS/6000 running AIX 3.2.5 using IBM XL FORTRAN v188.8.131.52
DEC Alpha 3000/300 running Digital Unix 3.2d using DEC FORTRAN 77 v3.8
Sun Sparc 20 running Solaris 2.4 using Sun FORTRAN 77 v2.0
C. M. Eisenhauer, "DETAN 95: Computer Code for Calculating Spectrum-Averaged Cross Sections and Detector Responses in Neutron Spectra," NISTIR 5622 (March 1995).
C. M. Eisenhauer, "DETAN 96: Documentation of Interactive Code for PC (June 1996).
11. CONTENTS OF CODE PACKAGE
Included are the referenced documents and one DS/HD 3.5" diskette (1.44MB) written in DOS format containing the source code: 625-group ENDF/BV dosimetry cross sections; sample input spectra, detector responses, and energy group structures; and sample problem input and output.
12. DATE OF ABSTRACT
KEYWORDS: WORKSTATION; MICROCOMPUTER; MULTIGROUP CROSS SECTION PROCESSING; DETECTOR RESPONSE; NEUTRON