The MASH 1.0 code system: Utilization of morse in the adjoint mode

Conference · Tue Jun 01 00:00:00 EDT 1993

OSTI ID:10159826

Johnson, J O; Santoro, R T

The Monte Carlo Adjoint Shielding Code System -- MASH 1.0, principally developed at Oak Ridge National Laboratory (ORNL), represents an advanced method of calculating neutron and gamma-ray environments and radiation protection factors for complex shielding configurations by coupling a forward discrete ordinates radiation environment (i.e. air-over-ground) transport calculation with an adjoint Monte Carlo treatment of the shielding geometry. The primary application to date has been to determine the radiation shielding characteristics of armored vehicles exposed to prompt radiation from a nuclear weapon detonation. Other potential applications include analyses of the mission equipment associated with space exploration, the civilian airline industry, and other problems associated with an external neutron and gamma-ray radiation environment. This paper will provide an overview of the MASH 1.0 code system, including the verification, validation, and application to {open_quotes}benchmark{close_quotes} experimental data. Attention will be given to the adjoint Monte Carlo calculation, the use of {open_quotes}in-group{close_quotes} biasing to control the weights of the adjoint particles, and the coupling of a new graphics package for the diagnosis of combinatorial geometry descriptions and visualization of radiation transport results.

• Research Organization: Oak Ridge National Lab., TN (United States)
• Sponsoring Organization: Department of Defense, Washington, DC (United States)
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 10159826
• Report Number(s): CONF-9304137-2; ON: DE93013271; TRN: 93:001456
• Resource Relation: Conference: Centre d`Etudes meeting,Saclay (France),27-29 Apr 1993; Other Information: PBD: [1993]
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE
SHIELDING
COMPUTERIZED SIMULATION
VEHICLES
SPACE VEHICLES
MONTE CARLO METHOD
GAMMA RADIATION
NEUTRON SOURCES
M CODES
VERIFICATION
VALIDATION
BENCHMARKS
663620
663610
990200
PHYSICS OF RADIATIONS OTHER THAN NEUTRONS
NEUTRON PHYSICS
MATHEMATICS AND COMPUTERS