The MCLIB library: Monte Carlo simulation of neutron scattering instruments

Conference · Fri Sep 01 04:00:00 EDT 1995

OSTI ID:106612

Seeger, P A

Monte Carlo is a method to integrate over a large number of variables. Random numbers are used to select a value for each variable, and the integrand is evaluated. The process is repeated a large number of times and the resulting values are averaged. For a neutron transport problem, first select a neutron from the source distribution, and project it through the instrument using either deterministic or probabilistic algorithms to describe its interaction whenever it hits something, and then (if it hits the detector) tally it in a histogram representing where and when it was detected. This is intended to simulate the process of running an actual experiment (but it is much slower). This report describes the philosophy and structure of MCLIB, a Fortran library of Monte Carlo subroutines which has been developed for design of neutron scattering instruments. A pair of programs (LQDGEOM and MC{_}RUN) which use the library are shown as an example.

• Research Organization: Los Alamos National Lab., NM (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 106612
• Report Number(s): LA-UR--95-2937; CONF-9510212--1; ON: DE96000042
• Country of Publication: United States
• Language: English

Related Subjects

44 INSTRUMENTATION
INCLUDING NUCLEAR AND PARTICLE DETECTORS
66 PHYSICS
99 GENERAL AND MISCELLANEOUS
COMPUTER-AIDED DESIGN
COMPUTERIZED SIMULATION
M CODES
MONTE CARLO METHOD
NEUTRON DIFFRACTION
NEUTRON DIFFRACTOMETERS
NEUTRON SOURCES
NEUTRON TRANSPORT