1.mi.infn.it [184.108.40.206]); Mon, 14 Jul 2008 11:34:06 +0200 (CEST)
By default, importance biasing applies to primaries and also USIMBS should=
be called at the first transport step, provided you have a BIASING card=20
If you post input, source and usimbs I could have a look.
On Tue, 8 Jul 2008, Horv=E1th D=E1vid wrote:
> Dear Fluka users,
> I'm trying to simulate a shielding for a spent fuel of nuclear reactor. F=
> do this I'm using the soure.f routine to generate photons with different
> energies. I need to transport this photons through a lead shielding.
> To get results with good statistics the importance of primary photons is
> needed. With manual biasing (slicing into smaller regions) I could bias t=
> photons, but my geometry will be to complicated for manual biasing. And h=
> is my problem. With the usimbs.f routine I make the biasing, but I couldn=
> manage to apply this to the primary photons.
> How can use this routine for the primaries?
> Thanks for your answers.
> Best regards,
> David HORVATH
> engineering physicist student
> Budapest University of Technology and Economics
CH-1211 Geneva 23
Received on Mon Jul 14 18:51:25 2008
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