Criticality benchmarks for COG: A new point-wise Monte Carlo code

Conference · Mon May 01 04:00:00 EDT 1989

OSTI ID:6193769

Alesso, H P; Pearson, J; Choi, Jor Shan

COG is a new point-wise Monte Carlo code being developed and tested at LLNL for the Cray computer. It solves the Boltzmann equation for the transport of neutrons, photons, and (in future versions) charged particles. Techniques included in the code for modifying the random walk of particles make COG most suitable for solving deep-penetration (shielding) problems. However, its point-wise cross-sections also make it effective for a wide variety of criticality problems. The objective of this paper is to present calculational results of a variety of critical benchmark experiments using COG, and to present the resulting code bias. Numerous benchmark calculations have been completed for a wide variety of critical experiments which generally involve both simple and complex physical problems. The COG results, which we report in this paper, have been excellent.

• Research Organization: Lawrence Livermore National Lab., CA (USA)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 6193769
• Report Number(s): UCRL-99499; CONF-890631-7; ON: DE89011897
• Country of Publication: United States
• Language: English

Related Subjects

654001* -- Radiation & Shielding Physics-- Radiation Physics
Shielding Calculations & Experiments
654003 -- Radiation & Shielding Physics-- Neutron Interactions with Matter
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
99 GENERAL AND MISCELLANEOUS
990220 -- Computers
Computerized Models
& Computer Programs-- (1987-1989)
BENCHMARKS
BOLTZMANN EQUATION
C CODES
CHARGED-PARTICLE TRANSPORT
COMPUTER CODES
CROSS SECTIONS
DIFFERENTIAL EQUATIONS
EQUATIONS
MONTE CARLO METHOD
NEUTRAL-PARTICLE TRANSPORT
NEUTRON TRANSPORT
PARTIAL DIFFERENTIAL EQUATIONS
PHOTON TRANSPORT
RADIATION TRANSPORT