ACS Algorithm in Discrete Ordinates for Pressure Vessel Dosimetry

William Walters, Alireza Haghighat

Research output: Chapter in Book/Report/Conference proceedingConference contribution


The Adaptive Collision Source (ACS) method can solve the Linear Boltzmann Equation (LBE) more efficiently by adaptation of the angular quadrature order. This is similar to, and essentially an extension of, the first collision source method. Previously, the ACS methodology has been implemented into the TITAN discrete ordinates code, and has shown speedups of 2-4 on a simple test problem, with very little loss of accuracy (within a provided adaptive tolerance). This work examines the use of the ACS method for a more realistic problem: pressure vessel dosimetry with the VENUS-2 MOX-fuelled reactor dosimetry benchmark. The ACS method proved to be able to obtain accurate results while being approximately twice as efficient as using a constant quadrature in a standard source iteration scheme.

Original languageEnglish (US)
Title of host publicationISRD 2014 - International Symposium on Reactor Dosimetry
EditorsAbdallah Lyoussi
PublisherEDP Sciences
ISBN (Electronic)9782759819294
StatePublished - Feb 3 2016
Event15th International Symposium on Reactor Dosimetry, ISRD 2014 - Aix en Provence, France
Duration: May 18 2014May 23 2014

Publication series

NameEPJ Web of Conferences
ISSN (Print)2101-6275
ISSN (Electronic)2100-014X


Other15th International Symposium on Reactor Dosimetry, ISRD 2014
CityAix en Provence

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


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