From: liujt (jtliu@ihep.ac.cn)
Date: Tue Jun 06 2006 - 09:48:53 CEST
if this letter bothered you,i'am very sorry for that
i want to ask you a question that have worried many days
i come from china,and i work in IHEP.i have simulated a
few example with fluka,and the result is right,but recently
i simulate neutron yield,when the electron beam affect with
the target,the material of the target is iron,and i have
turn on photonuclear,i can get photon score,but i can't get
any neutron score
could you tell me what can do
thank you very much for you attention
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TITLE
Electron fluence inside and around a Fe target
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BEAM 1.89 ELECTRON
BEAMPOS 0.0 0.0 -50.0
*
GEOBEGIN COMBINAT
A simple Fe target inside vacuum
RPP 1-5000000.0+5000000.0-5000000.0+5000000.0-5000000.0+5000000.0
RPP 2-1000000.0+1000000.0-1000000.0+1000000.0-1000000.0+1000000.0
RPP 3 -20.0 +20.0 -20.0 +20.0 -20.0 +20.0
RPP 4 -10.0 +10.0 -10.0 +10.0 0.0 +5.0
END
* black hole
BH1 5 +1 -2
* vacuum around 1
VA2 5 +2 -3
* vacuum around 2
VA3 5 +3 -4
* Fe target
FE4 5 +4
END
GEOEND
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MATERIAL 26.0 55.845 7.874 11.0 IRON
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* Be target
ASSIGNMAT 11.0 4.0
* External Black Hole
ASSIGNMAT 1.0 1.0
* Vacuum
ASSIGNMAT 2.0 2.0
ASSIGNMAT 2.0 3.0
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LOW-BIAS 0.0 74.0 1.0 4.0 4.0 1.0
LOW-MAT 11.0 26.0 -2.0 293.0 0.0 0.0 IRON
LOW-NEUT 72.0 22.0 0.0196 1.0 0.0 -9.0
PAIRBREM 3.0 0.0 0.000001 4.0 4.0 1.0
EMFCUT 0.0 0.0 0.0 4.0 4.0 1.0 PHOT-THR
EMFCUT 0.0 0.0 0.0 4.0 4.0 1.0 PHO2-THR
PHOTONUC 1.0 0.0 0.0 4.0 4.0 1.0
* score in each region energy deposition and stars produced by primaries
SCORE 208.0 210.0 8.0
* Boundary neutron crossing current from the target to the vacuum
USRBDX +1.0 8.0 -47.0 4.0 3.0 n-out
USRBDX +1.89 +50.0 0.0 0.0 0.0 &
* Boundary photon crossing current from the target to the vacuum
USRBDX 1.0 7.0 -47.0 4.0 3.0 ph-out
USRBDX +1.89 +50.0 0.0 0.0 0.0 &
* Boundary electron crossing current from the target to the vacuum
USRBDX 1.0 3.0 -47.0 4.0 3.0 e-out
USRBDX +1.89 +50.0 0.0 0.0 0.0 &
* Boundary charged particle crossing current from the target to the vacuum
USRBDX 1.0 202.0 -47.0 4.0 3.0 ch-out
USRBDX +1.89 +50.0 0.0 0.0 0.0 &
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RANDOMIZE 1.0
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START 1000.0
STOP
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