RSICC CODE PACKAGE PSR-610

1.         NAME AND TITLE

GADRAS-DRF-18.7.2: Gamma Detector Response and Analysis Software–Detector Response Function.

2.         CONTRIBUTORS

Sandia National Laboratories, Albuquerque, NM.

3.         CODING LANGUAGE AND COMPUTER

Fortran, VISUAL BASIC (P00610PCX8601).

4.         NATURE OF PROBLEM SOLVED

GADRAS-DRF contains a suite of capabilities related to radiation detection. Its primary function is the simulation of gamma-ray and neutron detector signals to radiation sources. It also contains limited analysis functionality. GADRAS-DRF is the public version of the full version of GADRAS with capabilities such as radiation transport and advanced analyses removed.

5.         METHOD OF SOLUTION

Features in a gamma-ray detector spectrum; such as photo-peaks and the Compton continuum are derived from first-principle calculations based on interaction cross sections. Neutron detector response is computed by interpolating on a pre-computed database of thermal (3He) detector responses. For both gamma-ray and neutron detectors, the response to radiation that scatters into the detector from the surrounding environment is determined by a combination of first-principles calculations and empirical modeling. For new detectors, known detector parameters such as size and resolution are all that is necessary to compute an initial response function. This response function may be refined by measuring calibration sources and fitting the detector’s parameters to match the data.

6.         RESTRICTIONS OR LIMITATIONS

Radiation transport and advanced analyses capability has been removed.

7.         TYPICAL RUNNING TIME

Interactive.

8.         COMPUTER HARDWARE REQUIREMENTS

Windows based x86 systems.

9.         COMPUTER SOFTWARE REQUIREMENTS

A Windows operating system.

10.       REFERENCES

Steve M. Horne, Greg G. Thoreson, Lisa A. Theisen, Dean J. Mitchell, Lee Harding, and Wendy A. Amai, “GADRAS-DRF 18.5 User’s Manual”, SAND2014-20625 Revision 1, Sandia National Laboratories, June 2015.

11.       CONTENTS OF CODE PACKAGE

The package contains setup executable, user manual, source, and data files and is transmitted on one CD.

12.       DATE OF ABSTRACT

August 2015.

KEYWORDS:      DETECTOR RESPONSE, GAMMA-RAY, NEUTRON, INTERACTIVE