A new approach to fast neutron diagnostic simulation : Monte Carlo with shower and drizzle splittings and finite close-collision treatment
This paper presents a new approach to Monte Carlo simulation of neutron diagnostics that leads to an acceleration of the convergence of the variances with substantial saving of CPU-time. The acceleration is achieved due to improvement in the nuclear reaction-channel probing, improvement in space sampling and a simplified and precise close-collision description. An example of a simulation of the ASDEX tokamak shows that the ratio in CPU-time consumption for a Shower & Drizzle OFF and ON is 8 to 20. The new procedures form intrinsic parts of both VINIA-3DAMC and 3D-MCSC-RWR analogue-MC software sets that operate in continuous space and energy representations, on point-wise data file inputs, and without any simplification.
Bibliographic Reference: Paper presented: International Conference on Monte Carlo Methods for Neutron and Photon Transport Calculations, Budapest (HU), Sept. 25-28, 1990
Availability: Available from (1) as Paper EN 35854 ORA
Record Number: 199110045 / Last updated on: 1994-12-02
Original language: en
Available languages: en