From: Vasilis Vlachoudis (Vasilis.Vlachoudis@cern.ch)
Date: Mon Sep 03 2007 - 09:58:10 CEST
Dear Kaushik,
your problem is an alignment error in the AR2 region, you have an extra
space in front of the -4 body. When I properly aligned it I've got count
in the USRTRACK.
Best Regards
Vasilis
kaushik banerjee wrote:
> /Dear FLUKA development team, //
>
> // I am interested in studying few MeV neutrons (AmBe source) tranport
> through a paraffin block and want to count the neutron track in a 2”by
> 2” liquid scintillator detector placed 33cm from the paraffin block
> along z-axis. /
> I analyse the fluka result using ustsuw program.
> First (paraffin6.inp) I used one RPP as paraffin block and one RCC as
> my Liquid scintillator detector , I didn’t found any count in my
> detector .
> Then (paraffin5.inp) I slightly change my geometry using only one RPP
> and divided it in three parts using planes XYP, and I got count in my
> detector portion.
> with regards
>
> ------------------------------------------------------------------------
> Download prohibited? No problem. CHAT
> <http://in.rd.yahoo.com/tagline_webmessenger_1/*http://in.messenger.yahoo.com/webmessengerpromo.php>
> from any browser, without download.
> ------------------------------------------------------------------------
>
> *...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
> GLOBAL 4.0
> TITLE
> Neutron fluence inside and around a neutron-irradiated Paraffin target
> *...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
> *BEAM 50.E00 NEUTRON
> BEAM -0.0102 0.0 0.0 0.0 0.0 0.0 NEUTRON
> BEAMPOS 0.0 0.0 -33.0
> SOURCE
> *
> GEOBEGIN COMBINAT
> A simple Be target inside vacuum
> RPP 1 -5000.0 +5000.0 -5000.0 +5000.0 -5000.0 +5000.0
> RPP 2 -1000.0 +1000.0 -1000.0 +1000.0 -1000.0 +1000.0
> RPP 3 -12.5 +12.5 -6.5 +6.5 0.0 +43.0
> * RPP 4 -12.5 +12.5 -6.5 +6.5 +5.5 +8.5
> *...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
> * RCC 4 0.0 -2.5 33.0 0.0 5.0 0.0
> * 2.5
> * RCC 4 0.0 0.0 0.0 33.0 33.0 33.0
> * 2.5
> XYP 4 10.0
> XYP 5 38.0
> END
> *...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
> * black hole
> 1 5 +1 -2
> * Air around
> 2 5 +2 -3
> * Paraffin block
> 3 5 +3 +4
> * air b/w paraffin block and detector
> 4 5 +3 -4 +5
> * detector
> 5 5 +3 -5
> END
> GEOEND
> *...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
> MATERIAL 4.0 9.0122 1.848 5.0 BERYLLIU
> *MATERIAL 0.0 0.00 0.001205 26.0 AIR
> *COMPOUND -0.000124 6.0 -0.755268 7.0 -0.231781 8.0 AIR
> *COMPOUND -0.012827 20.0 AIR
> MATERIAL 0.93 27.0 PARAFFIN
> COMPOUND -0.148605 3.0 -0.851395 6.0 PARAFFIN
> * Polythene (mat. 29): H (material 3) and C (material6)
> MATERIAL 0.94 29.0 POLY-CH2
> COMPOUND 2.0 3.0 1.0 6.0 POLY-CH2
> *MATERIAL 0.0 0.0 1.0 28.0 WATER
> *COMPOUND 2.0 3.0 1.0 8.0 WATER
> *LOW-MAT 3.0 1.0 -3.0 293.0 HYDROGEN
> MATERIAL 0.0 0.0 1.0 20.0 WATER
> COMPOUND 2.0 3.0 1.0 8.0 WATER
> MATERIAL 0.0 0.0 0.001205 24.0 AIR
> COMPOUND -0.000124 6.0 -0.755267 7.0 -0.231781 8.0 AIR
> COMPOUND -0.012827 9.0 AIR
> *...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
> LOW-NEUT 0.0
> *LOW-NEUT 72.0 22.0 6.7032E-3 2.0 1.0 11.0
> *LOW-BIAS 70.0 72.0 0.95 3.0 4.0 0.0
> *PART-THR -0.002 1.0 10.0 1.0 0.0 1.0
> *DETECTOR
> ASSIGNMAT 20.0 5.0
> * region b/w paraffin block and detector
> ASSIGNMAT 24.0 4.0
> * Paraffin block
> ASSIGNMAT 27.0 3.0
> * External Black Hole
> ASSIGNMAT 1.0 1.0
> * Air
> ASSIGNMAT 24.0 2.0
> *...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
> * e+e- and gamma production threshold set at 100 KeV
> EMFCUT -1.0E-9 1.0E-9 0.0 20.0 27.0 PROD-CUT
> * score in each region energy deposition and stars produced by primaries
> * SCORE 208.0 8.0 7.
> SCORE 208.0 211.0
> *SCORE ENERGY BEAMPART
> *...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
> USRTRACK -1.0 8.0 -48.0 5.0 1000.0 20. nuFluen
> USRTRACK 3.0 0.0 &
> USRTRACK -1.0 1.0 -49.0 5.0 1000.0 20. prFluen
> USRTRACK 3.0 0.0 &
> *...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
> RANDOMIZE 1.0
> *...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
> START 5000000.0
> STOP
>
> ------------------------------------------------------------------------
>
> *...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
> GLOBAL 4.0
> TITLE
> Neutron fluence inside and around a neutron-irradiated Paraffin target
> *...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
> *BEAM 50.E00 NEUTRON
> BEAM -0.3025 0.0 0.0 0.0 0.0 0.0 NEUTRON
> BEAMPOS 0.0 0.0 -33.0
> SOURCE
> *
> GEOBEGIN COMBINAT
> A simple Be target inside vacuum
> RPP 1 -5000.0 +5000.0 -5000.0 +5000.0 -5000.0 +5000.0
> RPP 2 -1000.0 +1000.0 -1000.0 +1000.0 -1000.0 +1000.0
> RPP 3 -12.5 +12.5 -6.5 +6.5 0.0 +5.0
> * RPP 4 -12.5 +12.5 -6.5 +6.5 +6.0 +8.5
> *...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
> RCC 4 0.0 -2.5 33.0 0.0 5.0 0.0
> 2.5
> * RCC 4 0.0 0.0 0.0 33.0 33.0 33.0
> * 2.5
> * XYP 5 5.0
> * XYP 6 38.0
> END
> *...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
> * black hole
> BH1 5 +1 -2
> * Air around
> AR2 5 +2 -3 -4
> * Paraffin block
> PF3 5 3
> * air b/w paraffin block and detector
> * 4 5 +3 -5 +6
> * detector
> DE4 5 4
> END
> GEOEND
> *...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
> MATERIAL 4.0 9.0122 1.848 5.0 BERYLLIU
> *MATERIAL 0.0 0.00 0.001205 26.0 AIR
> *COMPOUND -0.000124 6.0 -0.755268 7.0 -0.231781 8.0 AIR
> *COMPOUND -0.012827 20.0 AIR
> *MATERIAL 0.93 27.0 PARAFFIN
> *COMPOUND -0.148605 3.0 -0.851395 6.0 PARAFFIN
> * Polythene (mat. 29): H (material 3) and C (material6)
> *MATERIAL 0.94 29.0 POLY-CH2
> *COMPOUND 2.0 3.0 1.0 6.0 POLY-CH2
> *MATERIAL 0.0 0.0 1.0 28.0 WATER
> *COMPOUND 2.0 3.0 1.0 8.0 WATER
> *LOW-MAT 3.0 1.0 -3.0 293.0 HYDROGEN
> MATERIAL 0.0 0.0 1.0 20.0 WATER
> COMPOUND 2.0 3.0 1.0 8.0 WATER
> MATERIAL 0.0 0.0 0.001205 24.0 AIR
> COMPOUND -0.000124 6.0 -0.755267 7.0 -0.231781 8.0 AIR
> COMPOUND -0.012827 9.0 AIR
> *...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
> LOW-NEUT 72.0 22.0 6.7032E-3 2.0 1.0 11.0
> LOW-BIAS 70.0 72.0 0.95 3.0 4.0 0.0
> PART-THR -0.002 1.0 10.0 1.0 0.0 1.0
> *DETECTOR
> ASSIGNMAT 20.0 4.0
> * region b/w paraffin block and detector
> *ASSIGNMAT 24.0 4.0
> * Paraffin block
> ASSIGNMAT 20.0 3.0
> * External Black Hole
> ASSIGNMAT 1.0 1.0
> * Air
> ASSIGNMAT 2.0 2.0
> *...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
> * e+e- and gamma production threshold set at 100 KeV
> EMFCUT -1.0E-9 1.0E-9 0.0 20.0 27.0 PROD-CUT
> * score in each region energy deposition and stars produced by primaries
> * SCORE 208.0 8.0 7.
> SCORE 208.0 211.0
> *SCORE ENERGY BEAMPART
> *...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
> USRTRACK -1.0 8.0 -48.0 4.0 1000.0 100. nuFluen
> USRTRACK 3.0 0.0 &
> USRTRACK -1.0 1.0 -49.0 4.0 1000.0 20. prFluen
> USRTRACK 3.0 0.0 &
> *...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
> RANDOMIZE 1.0
> *...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
> START 5000.0
> STOP
>
> ------------------------------------------------------------------------
>
> *
> *
> *
> 3.250E-03 2.5151E+03
> 3.750E-03 1.9055E+03
> 4.250E-03 1.9233E+03
> 4.750E-03 2.4983E+03
> 5.250E-03 2.0782E+03
> 5.750E-03 2.0344E+03
> 6.250E-03 2.0628E+03
> 6.750E-03 1.3353E+03
> 7.250E-03 1.3713E+03
> 7.750E-03 1.6601E+03
> 8.250E-03 1.3330E+03
> 8.750E-03 6.1788E+02
> 9.250E-03 7.7370E+02
> 9.750E-03 9.3801E+02
> 1.025E-02 5.8393E+01
>
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