[fluka-discuss]: do fluka have variance reduction tecnique of forced collision like in mcnp or phits?

From: 李立华 <13691416247_at_ciae.ac.cn>
Date: Thu, 7 Jan 2021 14:51:46 +0800 (GMT+08:00)

Dear fluka experts:

    do fluka have variance reduction tecnique of forced collision like in mcnp or phits?

the tecnique like below:

The forced collisions are used for improving tally statistics or thin target analysis by enlarging the collision
probabilities. When specified particle comes into a region defined as the forced collision region, the particle is
divided into two particles. One has a weight by (penetration probability) × (its weight), this particle pass through
to the next region. The other has a weight of (1 - penetration probability) × (its weight), and it is forced to collide
with a target in the region. The collision point is randomly determined according to cross sections. Regions and
factors for the forced collisions can be defined in this section. Non-defined regions are set factor zero.
 

if fluka have, how shauld i do?




with best regards!

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Received on Thu Jan 07 2021 - 09:41:17 CET

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