On biasing

Dear Fluka experts,
         I would like to put forward a problem in biasing. My problem
is in attachment: the geometry is a concrete room around a UC2
target. Near the point of coordinates (400, 500, 370) a small portion
of the concrete shielding is created at a mesoscale: aggregates and
paste. Results of neutron flux and energy deposition are reported as
well. I guess with biasing I can better my results, that is I can get
no more neutron tracks but more homogeneous contours; which biasing
technique should I apply? I tried to use the card but maybe you can
suggest which is the most suitable way to do that because I am not
that expert on biasing results.
Thank you for your help,
my best regards,
Beatrice

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Ing. Beatrice Pomaro

Universita' degli Studi di Padova
Dipartimento di Costruzioni e Trasporti
Via F. Marzolo, 9 - 35131 Padova (Italy)
tel.: +39 049 8275605
e-mail: pomaro_at_dic.unipd.it