COG: A particle transport code designed to solve the Boltzmann equation for deep-penetration (shielding) problems: Benchmark problems: Volume 4

Technical Report · Fri Dec 02 04:00:00 EST 1988

OSTI ID:6780875

Wilcox, Jr, T P; Lent, E M

COG is a Monte Carlo computer code designed to solve the Boltzmann equation for transporting neutrons and photons and in future versions, charged particles. Sixty-four different problems were run using the current versions of the COG code on Cray-1 and Cray/X-MP computers. In all cases, the calculated COG results either agree with the values known analytically for some problems or are within the statistical and uncertainties determined experimentally for the others. Problems such as these are referred to benchmark problems and form an important part of the validation of any new computer code. Benchmark problems are of value in that they are used to: check that the code works correctly; check that the physical data used in the code are correct; check that the user has learned to run the code properly; and understand the inherent errors associated with the calculated results. 22 refs., 21 figs., 10 tabs.

• Research Organization: Lawrence Livermore National Lab., CA (USA)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 6780875
• Report Number(s): M-221-4; ON: DE89006084
• 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)
BOLTZMANN EQUATION
C CODES
COMPUTER CODES
COMPUTERIZED SIMULATION
DIFFERENTIAL EQUATIONS
EQUATIONS
GAMMA TRANSPORT THEORY
MONTE CARLO METHOD
NEUTRON TRANSPORT THEORY
PARTIAL DIFFERENTIAL EQUATIONS
SIMULATION
TESTING
TRANSPORT THEORY
VALIDATION