Monte Carlo modeling of neutron and gamma-ray imaging systems

Conference · Mon Apr 01 04:00:00 EST 1996

OSTI ID:228493

Hall, J

Detailed numerical prototypes are essential to design of efficient and cost-effective neutron and gamma-ray imaging systems. We have exploited the unique capabilities of an LLNL-developed radiation transport code (COG) to develop code modules capable of simulating the performance of neutron and gamma-ray imaging systems over a wide range of source energies. COG allows us to simulate complex, energy-, angle-, and time-dependent radiation sources, model 3-dimensional system geometries with ``real world`` complexity, specify detailed elemental and isotopic distributions and predict the responses of various types of imaging detectors with full Monte Carlo accuray. COG references detailed, evaluated nuclear interaction databases allowingusers to account for multiple scattering, energy straggling, and secondary particle production phenomena which may significantly effect the performance of an imaging system by may be difficult or even impossible to estimate using simple analytical models. This work presents examples illustrating the use of these routines in the analysis of industrial radiographic systems for thick target inspection, nonintrusive luggage and cargoscanning systems, and international treaty verification.

• Research Organization: Lawrence Livermore National Lab., CA (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 228493
• Report Number(s): UCRL-JC--122830; CONF-960690--1; ON: DE96009704
• Country of Publication: United States
• Language: English

Related Subjects

05 NUCLEAR FUELS
66 PHYSICS
C CODES
GAMMA RADIOGRAPHY
IMAGES
INDUSTRIAL RADIOGRAPHY
INSPECTION
MONTE CARLO METHOD
NEUTRON RADIOGRAPHY
RADIATION TRANSPORT