DOI QR코드

DOI QR Code

Measurement of Electron Beam Output for the Prototype Compact Linac

콤팩트 전자 선형가속기 시작품의 출력측정에 관한 연구

  • Kim, Sung-Woo (Research Center, Dongnam Inst. of Radiological & Medical Sciences) ;
  • Kang, Sang Koo (Research Center, Dongnam Inst. of Radiological & Medical Sciences) ;
  • Rhee, Dong Joo (Research Center, Dongnam Inst. of Radiological & Medical Sciences) ;
  • Lim, Heuijin (Research Center, Dongnam Inst. of Radiological & Medical Sciences) ;
  • Lee, Manwoo (Research Center, Dongnam Inst. of Radiological & Medical Sciences) ;
  • Yi, Jungyu (Research Center, Dongnam Inst. of Radiological & Medical Sciences) ;
  • Lee, Mujin (Research Center, Dongnam Inst. of Radiological & Medical Sciences) ;
  • Yang, Kwangmo (Research Center, Dongnam Inst. of Radiological & Medical Sciences) ;
  • Ro, Tae Ik (Department of Material Physics, Dong-A University) ;
  • Jeong, Dong Hyeok (Research Center, Dongnam Inst. of Radiological & Medical Sciences)
  • 김성우 (동남권원자력의학원 연구센터) ;
  • 강상구 (동남권원자력의학원 연구센터) ;
  • 이동주 (동남권원자력의학원 연구센터) ;
  • 임희진 (동남권원자력의학원 연구센터) ;
  • 이만우 (동남권원자력의학원 연구센터) ;
  • 이준규 (동남권원자력의학원 연구센터) ;
  • 이무진 (동남권원자력의학원 연구센터) ;
  • 양광모 (동남권원자력의학원 연구센터) ;
  • 노태익 (동아대학교 신소재 물리학과) ;
  • 정동혁 (동남권원자력의학원 연구센터)
  • Received : 2015.02.17
  • Accepted : 2015.03.13
  • Published : 2015.03.31

Abstract

The C-band compact linear accelerator (linac) is being developed at Dongnam Institute of radiological & Medical Sciences (DIRAMS) for medical and industrial applications. This paper was focused on the output measurement of the electron beam generated from the prototype electron linac. The dose rate was measured in unit of cGy/min per unit pulse frequency according to the IAEA TRS-398 protocol. Exradin-A10 Markus type plane parallel chamber used for the measurement was calibrated in terms of dose to water at the reference depth in water. The beam quality index ($R_{50}$) was determined by the radiochromic film with a solid water phantom approximately due to low energy electrons. As a result, the determined electron beam output was $17.0cGy/(min{\cdot}Hz$. The results were used to monitor the accelerator performance during the development procedure.

의료용 및 산업용으로 활용하기 위한 C-밴드형 콤팩트 선형가속기의 개발이 동남권원자력의학원에서 진행되고 있다. 본 논문에서는 선형가속기 시작품에서 발생한 전자빔의 출력 측정 결과를 보고하고자 한다. 출력 측정은 물흡수선량에 대해 교정된 Exradin-A10 마커스형 평행평판형 전리함을 사용하여 물속 기준 깊이에서 IAEA TRS-398 프로토콜에 따라 흡수선량율을 결정하는 과정으로 진행되었다. 전자선 에너지가 낮은 점으로 인하여 선질지표($R_{50}$)은 필름 측정법을 써서 근사적으로 결정하였다. 결과로서 단위 펄스 진동수당의 선형가속기 전자빔의 출력은 $17.0cGy/(min{\cdot}Hz$로 나타났다. 본 연구의 결과는 개발 중인 전자가속기의 성능 평가 자료로 활용될 것이다.

Keywords

References

  1. Robert WH: COMMERCIAL APPLICATIONS OF LINACS. Proceedings of the Linear Accelerator Conference (1990)
  2. David IT, John BT: Back to the future: the history and development of the clinical linear accelerator. Phys Med Biol 51: R343-R362 (2006) https://doi.org/10.1088/0031-9155/51/13/R20
  3. IAEA TECDOC-1386: Emerging applications of radiation processing. International Atomic Energy Agency, Vienna (2004)
  4. Danon Y, Block RC, Bahran R et al.: Nuclear Data Measurements at the RPI linac. AccApp '07: 777-780 (2007)
  5. Mitsuru U: Review of electron linac based neutron sources for nuclear data study. CLIC Workshop (2014)
  6. TRS-398: Absorbed dose determination in external beam radiotherapy: an international code of practice for dosimetry based on standards of absorbed dose to water. International Atomic Energy Agency, Vienna (2000)
  7. Kim SH, Park BJ, Moon SI et al.: Prototype Tests on Cband Standing-wave Electron Linac. KPS spring meeting (2007)
  8. IBA: Absolute Dose Measurements in External Beam Radiotherapy. p-Codes of Practice Absolute Dosimetry(510-001-01), IBA Dosimetry GmbH, Schwarzenbruck, Germany (2012)
  9. TRS-277: Absorbed Dose Determination in Photon and Electron Beams: An International Code of Practice. International Atomic Energy Agency, Vienna (1997)

Cited by

  1. 전자선 선질 R50=1.0과 1.4 g/cm2에 대한 PTW-Markus 전리함의 선질보정인자 결정에 관한 연구 vol.26, pp.3, 2015, https://doi.org/10.14316/pmp.2015.26.3.178
  2. 연구용 선형가속기의 전자총 가열 전류에 따른 전자선의 에너지 인자 측정과 출력 측정 연구 vol.27, pp.1, 2015, https://doi.org/10.14316/pmp.2016.27.1.25
  3. Electron Energy Distribution for a Research Electron LINAC vol.28, pp.2, 2017, https://doi.org/10.14316/pmp.2017.28.2.49
  4. Numerical Modeling and Experiment for Single Grid-Based Phase-Contrast X-Ray Imaging vol.28, pp.3, 2017, https://doi.org/10.14316/pmp.2017.28.3.83
  5. Calculation of Electron-Beam Dynamics in a C-Band Accelerator for a Radiotherapy Complex vol.73, pp.6, 2018, https://doi.org/10.3103/s002713491806019x