Analysis of DD, TT and DT Neutron Streaming Experiments with the ADVANTG Code

JSI and UL, Ljubljana, Slovenia
NCSRD, Athens, Greece
ORNL, Oak Ridge, USA
JSI, Ljubljana, Slovenia
ORNL, Oak Ridge, USA
CCFE, Oxford, United Kingdom
IFJ, Krakow, Poland
ENEA, Frascati, Italy
ENEA, Frascati, Italy

bor.kos@ijs.si
dora@ipta.demokritos.gr
moshersw@ornl.gov
ivan.kodeli@ijs.si
grovere@ornl.gov
jonathan.naish@ukaea.uk
barbara.obryk@gmail.com
rosaria.villari@enea.it
paola.batistoni@enea.it
^* see the author list of X. Litaudon et al 2017 Nucl. Fusion 57 102001

Published online: 20 January 2020

Abstract

The paper presents an analysis of DD, TT and DT neutron streaming benchmark experiments with the recently released hybrid transport code ADVANTG (AutomateD VAriaNce reducTion Generator). ADVANTG combines the deterministic neutron transport solver Denovo with the Monte Carlo transport code MCNP via the principle of variance reduction. It automatically produces weight-window and source biasing variance reduction parameters based on the CADIS (Consistent Adjoint Driven Importance Sampling) methodology. Using this novel hybrid methodology Monte Carlo simulations of realistic complex fusion streaming geometries have become possible. In this paper the experimental results from the 2016 DD campaign using measurements with TLDs and activation foils up to 40 m from the plasma source are analyzed. New detailed models of the detector assemblies were incorporated into the JET 360° MCNP model for this analysis. In preparation of the TT and DTE2 campaigns at JET a pre-analysis for these campaigns is also presented.