Re: tallying recoil proton in fluka

thank you very much Francesco for this

it helps quite well, i make many tests with all of these options !!

and the problem is being solved !!

Francois

Le samedi 08 novembre 2008 =C3=A0 21:30 +0100, Francesco Cerutti a =C3=A9cr=
it :
> Salut Francois,
>=20
> > i need to score proton produced by neutron (elastic interaction) in bc
> > 501 liquid scintillator, i have tried many tallies but i am new with
> > fluka and a bit lost with its numerous options
>=20
> in fact different options are available, and the choice depends on your=
=20
> actual needs. You could score spatial distribution of (energy=20
> integrated) proton fluence with USRBIN, or the proton spectrum over a=20
> region with USRTRACK, or double differential (vs energy and angle) proton=
=20
> fluence on a surface with USRBDX...
> This way you do not discriminate possible protons produced by n+C nuclear=
=20
> reactions in the scintillator.
> Set carefully the energy limits in the more suitable scoring card (but=20
> USRBIN) and the proton transport cutoff as well.
> Otherwise, an event by event analysis can be done with USERDUMP and a=20
> customized mgdraw routine where you can intercept proton recoils at the=
=20
> entry USDRAW (activated by WHAT(4)=3D1.0 in USERDUMP). Among the NP=20
> secondaries produced in any interaction, protons are identified by=20
> KPART(IP=3D1,..,NP)=3D1 and you can know their origin by the ICODE value.=
 For=20
> neutron interactions (JTRACK=3D8) in the scintillator, proton recoils can=
 be=20
> produced by an elastic interaction n+H (ICODE=3D100, or ICODE=3D300 if th=
e=20
> neutron energy T_n is below 20MeV) and an inelastic interaction n+C=20
> (ICODE=3D101 for T_n>20MeV).
>=20
> Hope this helps
>=20
> Francesco
>=20
> **************************************************
> Francesco Cerutti
> CERN-AB
> CH-1211 Geneva 23
> Switzerland
> tel. ++41 22 7678962
> fax ++41 22 7668854
>=20
--=20
Fran=C3=A7ois Begin
LCPR - AC (Laboratoire de Chimie Physique et Rayonnements - Alain
Chambaudet)
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Received on Sun Nov 16 2008 - 15:17:19 CET