A simulation study on angular and micro pattern effects in GEM detectors
| Autor: | Farzana Ahmad, Youngtae Jeon, H.G. Kim, Muhammad Jamil, J.T. Rhee |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Physics::Instrumentation and Detectors
Monte Carlo method engineering.material 01 natural sciences 030218 nuclear medicine & medical imaging Fast Neutrons Micrometre 03 medical and health sciences 0302 clinical medicine Optics Coating 0103 physical sciences Neutron detection Computer Simulation Neutron Radiometry Physics Radiation 010308 nuclear & particles physics business.industry Detector Equipment Design Neutron temperature engineering Gas electron multiplier business Monte Carlo Method Software |
| Zdroj: | Applied Radiation and Isotopes. 110:64-69 |
| ISSN: | 0969-8043 |
| DOI: | 10.1016/j.apradiso.2015.12.065 |
| Popis: | A useful approach for the enhancement of thermal neutrons detection has been reported here. This technique, based on the angular and micro pattern effects, has been developed and applied to the boron-coated ((10)B) Gas Electron multiplier (GEM) detector. In the angular effect case, as a general rule, the detector device is turned at an angle which improves the device response per unit area of the detector. While for the latter case, a regular pattern in the form of micrometer deep grooves is fabricated onto the converter coating, consequently it enhances the capture probability of the detector. For the current study, both of these techniques using a (10)B-coated GEM detector have been simulated for low energy neutrons. For the evaluation of detector response thermal neutrons in the energy ranges from 25meV to 100meV were transported onto the detector surface. For this work, FLUKA MC code has been utilized. The output in both cases has been estimated as a function of incident thermal neutron energies. By employing both techniques, the angle and the micro pattern dependent efficiencies for (10)B-coated GEM detectors are presented, which indicate an improved efficiency response of the device. We anticipate that by using these modifications can lead a further forward step in the development and improvement of thermal neutron detection technology. |
| Databáze: | OpenAIRE |
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