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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.

Additional information

Authors: ROBOUCH B V, ENEA, Centro Ricerche Energia Frascati, Roma (IT);HÜBNER K, Universität Heidelberg, Institut für Angewandte Physik, Heidelberg (DE);INGROSSO L, Universität Heidelberg, Institut für Angewandte Physik, Heidelberg (DE);BRZOSKO J S, Stevens Institute of Technology, Hoboken (US);KLEIN H, Physikalisch-Technische Bundesanstalt (PTB), Braunschweig (DE);GULDBAKKE S, Physikalisch-Technische Bundesanstalt (PTB), Braunschweig (DE);HUBNER K, Universitat Heidelberg, Institut fur Angewandte Physik, Heidelberg (DE)
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