The Accuracy Check of Peak Voltages of Industrial X-Ray Machine Using Spectrometer System

Abstract:

Measurement of peak voltage of Philips Industrial X-ray Machine is essential to be carried out at least at annual basis to ensure the accuracy of tube voltage applied in determination of standard radiation qualities for calibrating diagnostic dosemeter. In this paper, the peak voltages for dial voltages range within 40kV to 160kV were measured using Amptek spectrometer system. All X-ray spectrums produced from the X-ray tube were calibrated against standard calibration spectrum that was established using two standard sources: ⁵⁵Fe and ⁵⁷Co. The peak voltage for each dial voltage was determined based on the end point energy of the X-ray spectrum. The percentage deviation of measured peak voltage relative to dial voltage was calculated. The results from measurement in 2008 to 2013 demonstrate that all peak voltages from 40kV to 160kV tube potentials are within the tolerance limit of ± 5%. These results complies the recommendation by the International Electrotechnical Commission (IEC) 61676. As a conclusion, regular checks of peak voltage should be performed to ensure consistency of voltage applied to the X-ray tube thus maintain the accuracy of standard radiation qualities produced from the X-ray tube.

• Periodical: Advanced Materials Research (Volume 1087)
• Pages: 1-5
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1087.1
• Online since: February 2015
• Authors: Norhayati Abdullah*, Shahrul Azlan Azizan, Norriza Mohd Isa, Asmaliza Hashim, Mohd Firdaus Abd Rahman, Sarizah Mohamed Nor, Zainal Jamaluddin, Mohd Muzammil Abd Jalil, Muhammad Jamal Md Isa
• Keywords: Peak Voltage, Spectrometer System, X-Ray Spectrum

References

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DOI: 10.3403/02736917