Earticle

초록

영어

Background: In the calibration and testing laboratory of Korea Atomic Energy Research Institute, the old X-ray generator used for the production of reference X-ray fields was replaced with a new one. For this newly installed X-ray irradiation system, beam alignment as well as the verification of beam qualities was conducted. Materials and Methods: The existing X-ray generator, Phillips MG325, was replaced with YXLON Y.TU 320-D03 in order to generate reference X-ray fields. Theoretical calculations and Monte Carlo simulations were used to determine initial filter thickness. Beam alignment was performed in three steps to deliver a homogeneous radiation dosage to the target at different distances. Finally, the half-value layers were measured for different X-ray fields to verify beam qualities by using an ion chamber. Results and Discussion: Beam alignment was performed in three steps, and collimators and other components were arranged to maintain the uniformity of the mean air kerma rate within ±2.5% at the effective beam diameter of 28 cm. The beam quality was verified by using halfvalue layer measurement methods specified by American National Standard Institute (ANSI) N13.11-2009 and International Organization for Standardization (ISO)-4037. For each of the nine beams than can be generated by the new X-ray irradiation system, air kerma rates for Xray fields of different beam qualifies were measured. The results showed that each air kerma rate and homogeneity coefficient of the first and second half-value layers were within ±5% of the recommended values in the standard documents. Conclusion: The results showed that the new X-ray irradiation system provides beam qualities that are as high as moderate beam qualities offered by National Institute of Standards and Technology in ANSI N13.11-2009 and those for narrow-spectrum series of ISO-4037.

목차

ABSTRACT
Introduction
Materials and Methods
1. Establishment of reference X-ray field
2. Beam alignment of X-ray generator
3. Half-value layer measurement
Results and Discussion
Conclusion
Acknowledgements
References

키워드

저자

• Seung Kyu Lee [ Korea Atomic Energy Research Institute, Daejeon, Korea ] Corresponding Author
• Insu Chang [ Korea Atomic Energy Research Institute, Daejeon, Korea ]
• Sang In Kim [ ARIM Science, 310 CTCC, Daejeon, Korea ]
• Jungil Lee [ Korea Atomic Energy Research Institute, Daejeon, Korea ]
• Hyoungtaek Kim [ Korea Atomic Energy Research Institute, Daejeon, Korea ]
• Jang-Lyul Kim [ Korea Atomic Energy Research Institute, Daejeon, Korea ]
• Min Chae Kim [ Korea Atomic Energy Research Institute, Daejeon, Korea; Department of Nuclear Engineering, Hanyang University, Seoul, Korea ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  방사선방어학회지 [Journal of Radiation Protection and Research]

• 간기

  계간

• pISSN

  2508-1888

• 수록기간

  1976~2026

• 등재여부

  KCI 등재,SCOPUS

• 십진분류

  KDC 559 DDC 629