FLUKA simulations for the X17 test measurement

Target setup

target setup matrix
shape cylinder
material ERGAL (5.85% Zn, 2.3% Mg, 1.4% Cu, 90.45% Al)
thickness 1.4 mm
diameter ⌀ 3 inches
length 30 cm
gas pressure (O-16) no-gas, 1 atm, 30 atm and 300 atm
scoring cylinder, 30 cm length, 10 cm radius

setup test.png
Setup for the 3-inch target

Neutron beam

A gaussian-like incident neutron beam shape has been assumed with FWHM of 2.5 cm.

plot beam.png
Beam & target geometry

ERGAL container

⌀ 3 inch, 1.4 mm thickness, no-gas

En[MeV] time [μs] primaries [n] n ⟨En⟩ [MeV] p ⟨Ep⟩ [MeV] γ ⟨Eγ⟩ [MeV] e- ⟨Ee-⟩ [MeV] e+e- ⟨Ee+e-⟩ [MeV] e+e-(gen) ⟨Ee+e-(gen)⟩ [MeV]
4.0e+01 0.228 1.0e+07 2.6e+07 22.756 4.7e+05 13.118 1.2e+07 2.140 1.3e+05 1.635 1.4e+05 1.650 1.2e+07 0.944
1.0e+01 0.457 1.0e+07 2.2e+07 6.512 0.0e+00 0.000 2.0e+07 2.875 2.6e+05 2.027 2.8e+05 2.091 2.4e+07 1.183
1.0e+00 1.445 1.0e+07 4.2e+07 0.947 0.0e+00 0.000 5.3e+05 0.994 6.4e+02 0.368 6.4e+02 0.434 2.6e+05 0.337
1.0e-01 4.569 1.0e+07 4.4e+07 0.100 0.0e+00 0.000 7.4e+04 2.991 4.5e+02 1.790 6.6e+02 1.722 8.0e+04 1.535
1.0e-02 14.450 1.0e+07 1.5e+07 0.009 0.0e+00 0.000 9.1e+04 2.379 1.3e+03 1.762 1.3e+03 1.741 2.3e+04 2.579
1.0e-03 45.694 1.0e+07 2.0e+07 0.001 0.0e+00 0.000 4.7e+04 2.659 4.1e+02 3.068 4.1e+02 3.277 1.3e+05 2.352
1.0e-04 144.497 1.0e+07 2.1e+07 0.000 0.0e+00 0.000 1.0e+05 3.133 2.1e+03 1.962 2.4e+03 1.771 1.7e+05 1.696
1.0e-05 456.940 1.0e+07 2.1e+07 0.000 0.0e+00 0.000 3.7e+05 3.252 7.8e+03 2.086 8.0e+03 2.148 4.7e+05 1.487

⌀ 3 inch, 1.4 mm thickness, O-16 gas, 30 atm

En[MeV] time [μs] primaries [n] n ⟨En⟩ [MeV] p ⟨Ep⟩ [MeV] γ ⟨Eγ⟩ [MeV] e- ⟨Ee-⟩ [MeV] e+e- ⟨Ee+e-⟩ [MeV] e+e-(gen) ⟨Ee+e-(gen)⟩ [MeV]
4.0e+01 0.228 1.0e+07 3.1e+07 22.568 4.9e+05 12.483 1.4e+07 2.491 1.6e+05 1.683 1.7e+05 1.724 1.3e+07 0.950
1.0e+01 0.457 1.0e+07 2.9e+07 6.545 0.0e+00 0.000 2.4e+07 3.257 3.2e+05 2.187 3.5e+05 2.231 2.4e+07 1.147
1.0e+00 1.445 1.0e+07 9.0e+07 0.909 0.0e+00 0.000 5.4e+05 0.982 2.9e+03 0.388 2.9e+03 0.387 2.5e+05 0.353
1.0e-01 4.569 1.0e+07 7.0e+07 0.097 0.0e+00 0.000 7.3e+04 2.979 7.5e+02 2.116 7.5e+02 2.009 4.0e+04 2.450
1.0e-02 14.450 1.0e+07 4.3e+07 0.009 0.0e+00 0.000 1.0e+05 2.398 1.5e+03 1.875 1.5e+03 1.773 9.3e+04 1.098
1.0e-03 45.694 1.0e+07 4.9e+07 0.001 0.0e+00 0.000 4.6e+04 2.885 6.1e+02 1.112 6.1e+02 1.156 9.4e+04 0.793
1.0e-04 144.497 1.0e+07 5.0e+07 0.000 0.0e+00 0.000 1.1e+05 3.165 2.4e+03 2.326 2.4e+03 2.489 1.6e+05 1.399
1.0e-05 456.940 1.0e+07 5.0e+07 0.000 0.0e+00 0.000 3.7e+05 3.326 8.0e+03 2.591 8.1e+03 2.674 4.1e+05 1.326

⌀ 3 inch, 1.4 mm thickness, O-16 gas, 300 atm

En[MeV] time [μs] primaries [n] n ⟨En⟩ [MeV] p ⟨Ep⟩ [MeV] γ ⟨Eγ⟩ [MeV] e- ⟨Ee-⟩ [MeV] e+e- ⟨Ee+e-⟩ [MeV] e+e-(gen) ⟨Ee+e-(gen)⟩ [MeV]
4.0e+01 0.228 1.0e+07 7.2e+07 20.957 6.4e+05 10.368 3.3e+07 3.607 4.8e+05 2.283 5.2e+05 2.334 2.1e+07 1.400
1.0e+01 0.457 1.0e+07 8.9e+07 6.742 0.0e+00 0.000 6.3e+07 4.301 9.4e+05 2.620 1.1e+06 2.632 3.8e+07 1.687
1.0e+00 1.445 1.0e+07 4.6e+08 0.882 0.0e+00 0.000 6.7e+05 1.061 3.9e+03 1.010 4.1e+03 1.076 3.2e+05 0.624
1.0e-01 4.569 1.0e+07 2.9e+08 0.093 0.0e+00 0.000 1.1e+05 2.999 3.0e+03 1.659 3.0e+03 1.692 4.2e+04 1.105
1.0e-02 14.450 1.0e+07 2.7e+08 0.009 0.0e+00 0.000 1.4e+05 2.495 1.4e+03 0.904 1.4e+03 0.844 1.2e+05 1.063
1.0e-03 45.694 1.0e+07 2.9e+08 0.001 0.0e+00 0.000 6.8e+04 3.058 6.3e+02 3.723 6.3e+02 3.976 5.8e+04 0.977
1.0e-04 144.497 1.0e+07 2.9e+08 0.000 0.0e+00 0.000 1.4e+05 3.461 1.9e+03 2.781 1.9e+03 2.854 1.9e+05 1.628
1.0e-05 456.940 1.0e+07 2.9e+08 0.000 0.0e+00 0.000 4.6e+05 3.388 7.6e+03 2.497 8.2e+03 2.532 6.3e+05 1.658
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Topic revision: r8 - 2021-05-04 - AlbertoMengoni
 
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