Paper Information

Journal:   IRANIAN JOURNAL OF MEDICAL PHYSICS   FALL 2006 , Volume 3 , Number 12; Page(s) 25 To 36.
 
Paper: 

EVALUATION OF FLUKA CODE IN SIMULATION AND DESIGN OF X-RAY TUBES FOR X-RAY PROFILE

 
 
Author(s):  TALEEI R., SHAHRIARI M., AGHAMIRI SEYED MAHMOUD REZA
 
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Abstract: 
Introduction: X-ray is the most important and applicable tool in medicine, which is utilized in radiography and radiotherapy. Considering the difficulties exist in measuring x-ray profile there have been tremendous efforts to determine the profile by employing computational methods. FLUKA code is one of the multi purpose Monte Carlo codes, which can be used to simulate x-ray tubes. In the previous papers, MCNP results have been benchmarked with experimental data. In this work, the result obtained from Fluka code is compared to the data from MCNP code.
Materials and Methods: MCNP 4C and Fluka 2006 codes have been employed to simulate x-ray profile. For the simulation of x-ray profile MCNP 4C and FLUKA2006codes were employed. The Geometry of the tubes has been implesmented accurately in the simulation. The angle of electrons' departure for electrons from the cathode is exactly considered in order to get 1.2mm focal spot. The anode is made from Tungsten with an angle of 12 degree. The thickness of the aluminum filter is 1.2 mm.
Results: The result of x-ray profile from FLUKA and MCNP codes are determined prior to and after the filter. In order to survey the filter effects, the ratio of the profile before the filter to the one after the filter for both codes in 120 ke V is calculated.
Discussion and Conclusion: The result obtained from MCNP and FLUKA codes are comparable in the range of bremsstrahlung spectra, but there are some differences between the results of FLUKA and MCNP codes especially in specific x-ray peaks, The most important feature to be used to evaluate the quality of x-ray tubes profiles and the filter effects are the bremsstrahlung x-ray profile. Therefore, both FLUKA and MCNP codes are fairly good in simulatingx-ray tubes profiles.
 
Keyword(s): FLUKA, MCNP, X-RAY PROFILE, ALUMINUM FILTER
 
References: 
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