Difference between revisions of "Result estimators"

From Serpent Wiki
Jump to: navigation, search
Line 17: Line 17:
 
#Implicit estimators, based the expected frequency of events
 
#Implicit estimators, based the expected frequency of events
 
Implicit estimators are derived from analog estimators, with the purpose of
 
Implicit estimators are derived from analog estimators, with the purpose of
obtaining better statistics. Even though the estimators introduced in the
+
obtaining better statistics.
following can be used for calculating flux integrals, it should be noted
 
that flux itself plays no role in Monte Carlo transport simulation.
 
 
 
  
 
== Analog estimators ==
 
== Analog estimators ==

Revision as of 16:22, 19 November 2015

The Monte Carlo transport simulation is run to obtain statistical estimates for integrals of the form:

Failed to parse (Missing <code>texvc</code> executable. Please see math/README to configure.):


where $f$ is a response function that can be evaluated at an arbitrary position of the phase space, most typically a reaction cross section. These estimates are based on the collection of simulated events (collisions, track-lengths, surface crossings, etc.) that occur during the course of the simulated random walk.

The estimates can be divided into:

  1. Analog estimates, based on recorded simulated physical events
  2. Implicit estimators, based the expected frequency of events

Implicit estimators are derived from analog estimators, with the purpose of obtaining better statistics.

Analog estimators