Difference between revisions of "Comparison of radiation damage between FLUKA and Geant"

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[[Image:damage_function.jpg|500px]]
 
[[Image:damage_function.jpg|500px]]
  
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* Particle spectra through the SiPM
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* Particle spectra 75 cm downstream from SiPM - RADCON GEANT
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[[Image:geant_spectrum.jpg|400px|thumb|left| RADCON  GEANT ]]
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[[Image:geant_spectrum.jpg|400px|thumb|left| GEANT ]]
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[[Image:n_p_spectra.jpg|400px|thumb|left| FLUKA neutron and proton ]]
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<br clear=all>
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[[Image:g_e-_e+_pi-_pi+.jpg|400px|thumb|left| FLUKA ]]
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* Particle spectra in SiPM - FLUKA
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[[Image:n_p_spectra.jpg|400px|thumb|left| FLUKA ]]
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[[Image:particle_spectra.jpg|400px|thumb|left| FLUKA ]]
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<br clear=all>
  
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* Particle fluences in terms of 1-MeV equivalent neutrons in Si
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* 1-MeV neutron equivalent (Si) fluences
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[[Image:1MeVeqSi.jpg|400px|thumb|left| FLUKA all particles ]]
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[[Image:total_bcal.jpg|500px|thumb|left| FLUKA. Beam power at the target = 0.704 W ]]
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[[Image:neut_1MeVeq.jpg|400px|thumb|left| FLUKA neutrons ]]
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[[Image:neut_bcal.jpg|500px|thumb|left| FLUKA. Beam power at the target = 0.704 W ]]
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<br clear=all>
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[[Image:XY_SiPM.jpg|450px|thumb|left| FLUKA. Si PM limited by two circles with radii of 65 cm and 90 cm ]]
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<br clear=all>
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[[Image:total_halld.jpg|500px|thumb|left| FLUKA. Beam power at the target = 0.704 W ]]
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[[Image:neut_halld.jpg|500px|thumb|left| FLUKA. Beam power at the target = 0.704 W ]]
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<br clear=all>
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* Dose equivalent rate
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[[Image:dose_rate.jpg|500px|thumb|left| FLUKA. Beam power at the target = 0.704 W ]]
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<br clear=all>
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* Particles per cm^2 per second in terms of 1-MeV neutron equivalent in Si estimated with FLUKA simulation (Photon beam power at target = .704 W)
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 +
  {| border="2"
 +
  | Total
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  | Neutrons
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  | Protons
 +
  | Pions
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  | Electrons
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  | Positrons
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  |-
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  | 22.91 ± 0.18
 +
  | 18.04 ± 0.12
 +
  | 1.72  ± 0.03
 +
  | 1.80  ± 0.01
 +
  | 1.01  ± 0.19
 +
  | 0.19  ± 0.03
 +
  |}
 +
 
 +
 
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* GEANT simulations estimated neutron fluence (1-MeV neutron equivalent in Si) of 30.5 n/cm^2/sec 75 cm downstream from SiPM. FLUKA simulations estimated 16.9 n/cm^-2/sec in the same location.
 +
 
 +
 
 +
* FLUKA geometry and input files:  http://www.jlab.org/~georgek/halld/

Latest revision as of 16:07, 5 November 2010

  • Photon energy spectrum used in the simulations (photon flux corresponds to high-luminosity run)

Photon spectrum.jpg

  • Silicon damage function used by FLUKA

Damage function.jpg

  • Particle spectra 75 cm downstream from SiPM - RADCON GEANT
GEANT


  • Particle spectra in SiPM - FLUKA
FLUKA
FLUKA


  • 1-MeV neutron equivalent (Si) fluences
FLUKA. Beam power at the target = 0.704 W
FLUKA. Beam power at the target = 0.704 W


FLUKA. Si PM limited by two circles with radii of 65 cm and 90 cm


FLUKA. Beam power at the target = 0.704 W
FLUKA. Beam power at the target = 0.704 W


  • Dose equivalent rate
FLUKA. Beam power at the target = 0.704 W


  • Particles per cm^2 per second in terms of 1-MeV neutron equivalent in Si estimated with FLUKA simulation (Photon beam power at target = .704 W)
Total Neutrons Protons Pions Electrons Positrons
22.91 ± 0.18 18.04 ± 0.12 1.72 ± 0.03 1.80 ± 0.01 1.01 ± 0.19 0.19 ± 0.03


  • GEANT simulations estimated neutron fluence (1-MeV neutron equivalent in Si) of 30.5 n/cm^2/sec 75 cm downstream from SiPM. FLUKA simulations estimated 16.9 n/cm^-2/sec in the same location.


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