Difference between revisions of "X-talk between n-dets"
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The simulation of the cross talk between two neutron detectors was performed using GEANT4 program. The simulated detector layout is shown below: | The simulation of the cross talk between two neutron detectors was performed using GEANT4 program. The simulated detector layout is shown below: | ||
| − | [[File:Detector_shielding_setup.png | | + | [[File:Detector_shielding_setup.png | 400px]] |
The following stages of simulation of the x-talk were considered: | The following stages of simulation of the x-talk were considered: | ||
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The number of incident particle (neutrons) was <math>10^5</math> and their energy spectrum is shown below: | The number of incident particle (neutrons) was <math>10^5</math> and their energy spectrum is shown below: | ||
| − | [[File:Espectrum_incident_neutrons.png | | + | [[File:Espectrum_incident_neutrons.png | 400px]] |
Neutrons were incident uniformly over the surface of one of the neutron detectors normally to the surface w/o hitting the shielding and the analysing detector such that we have pure x-talk effect due to neutron interaction with the material BC-420 of the neutron detector being irradiated. The analysing detector detected all the particles scattered/produced in the shielding/BC-420. | Neutrons were incident uniformly over the surface of one of the neutron detectors normally to the surface w/o hitting the shielding and the analysing detector such that we have pure x-talk effect due to neutron interaction with the material BC-420 of the neutron detector being irradiated. The analysing detector detected all the particles scattered/produced in the shielding/BC-420. | ||
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The energy spectrum of all possible particles entering the analysing detector is presented below: | The energy spectrum of all possible particles entering the analysing detector is presented below: | ||
| − | [[File:all_particles_noShield.png]] | + | [[File:all_particles_noShield.png | 400px]] |
| + | |||
| + | Out of those particles we have the following number of neutrons: | ||
| + | |||
| + | [[File:neutrons_noShield.png | 400px]] | ||
Revision as of 15:12, 19 August 2014
The simulation of the cross talk between two neutron detectors was performed using GEANT4 program. The simulated detector layout is shown below:
The following stages of simulation of the x-talk were considered:
1) the x-talk effect is due to the acceptance of the analysing detector, i.e. there was no shielding in between the two detectors;
2) only 2" of borated poly was placed in between;
3) borated poly was placed in between two layers of 1" lead layers.
The number of incident particle (neutrons) was and their energy spectrum is shown below:
Neutrons were incident uniformly over the surface of one of the neutron detectors normally to the surface w/o hitting the shielding and the analysing detector such that we have pure x-talk effect due to neutron interaction with the material BC-420 of the neutron detector being irradiated. The analysing detector detected all the particles scattered/produced in the shielding/BC-420.
Stage 1 of the simulation
The energy spectrum of all possible particles entering the analysing detector is presented below:
Out of those particles we have the following number of neutrons:
