From: liujt (jtliu@ihep.ac.cn)
Date: Tue Jun 06 2006 - 08:58:58 CEST
if this letter bother you, i'm sorry for that
i have simulated some example,and i can get right result
recently,i simulate the neutron yield with electron beam effecting with the target
and the target material is iron.i can get photon score,but i can't get any neutron score in the result
this question have bother me many days,and i have change the material of the target.however i can't get
any neutron .
could you tell me what can i do
thank you for your attention
*...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
TITLE
Electron fluence inside and around a Fe target
*...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
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
*...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
MATERIAL 26.0 55.845 7.874 11.0 IRON
*...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
* 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
*...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
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 3.0 4.0 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 3.0 4.0 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 3.0 4.0 ch-out
USRBDX +1.89 +50.0 0.0 0.0 0.0 &
*...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
RANDOMIZE 1.0
*...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
START 1000.0
STOP
This archive was generated by hypermail 2.1.6 : Tue Jun 06 2006 - 23:32:08 CEST