Monte Carlo Simulation for Designing Collimator of the Neutron Radiography Facility in Malaysia
| Autor: | Faridah Mohamad Idris, Hafizal Yazid, Mohd Rizal Mamat, Rafhayudi Jamro, Khairiah Yazid, Mohamed Rawi Mohd Zain, Megat Harun Al Rashid Megat Ahmad, Nikolay Kardjilov, Azraf Azman, NurSazwani Mohd Ali, Abdul Aziz Mohamed, Mohamad HairieRabir |
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| Rok vydání: | 2017 |
| Předmět: |
Physics
medicine.medical_specialty 010308 nuclear & particles physics Astrophysics::High Energy Astrophysical Phenomena Neutron imaging Nuclear engineering Physics::Medical Physics Monte Carlo method Collimator 02 engineering and technology Neutron radiation 01 natural sciences Neutron temperature TRIGA law.invention law 0103 physical sciences 0202 electrical engineering electronic engineering information engineering medicine Physics::Accelerator Physics 020201 artificial intelligence & image processing Medical physics Research reactor Neutron |
| Zdroj: | Physics Procedia. 88:361-368 |
| ISSN: | 1875-3892 |
| Popis: | Neutron collimator is the most important component in a neutron radiography facility set-up, which defines the neutron beam characteristic at the object plane. The neutron radiography facility in Malaysia was built at one of the radial beam ports of TRIGA MARK II PUSPATI research reactor (RTP). At present, the facility has low thermal neutron intensity at the sample position, which leads to long irradiation times; it gives many limitations for the industrial applications. The collimator used for this facility is based on step divergent collimator type. The aim of this research is to design the best geometry and to choose materials for thermal neutron collimator so as to obtain a uniform beam, high L/D ratio and a maximum thermal neutron flux at the object plane. In order to achieve this aim new collimator geometry has been designed to improve the existing radiography facility by using Monte-Carlo simulation codes of SIMRES and MCNPX. The new design results are compared with those of the existing facility. Our simulation result may be of help in the design of new collimator for neutron radiography facility. |
| Databáze: | OpenAIRE |
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