Measurement of Scintillation Responses of Scintillation Fibers for Dose Verification in Proton Therapy
- Authors
- Kim, C.; Hong, B.; Jhang, G.; Joo, E.; Lee, K. S.; Lee, K. S.; Lee, S.; Lee, S. K.; Park, S. K.; Shim, H. H.; Shin, S. S.; Sim, K. S.; Cha, H. K.
- Issue Date
- 3월-2012
- Publisher
- KOREAN PHYSICAL SOC
- Keywords
- Proton therapy; Birks-model kB parameter; GEANT4; Dose verification; Scintillation fibers
- Citation
- JOURNAL OF THE KOREAN PHYSICAL SOCIETY, v.60, no.5, pp.725 - 730
- Indexed
- SCIE
SCOPUS
KCI
- Journal Title
- JOURNAL OF THE KOREAN PHYSICAL SOCIETY
- Volume
- 60
- Number
- 5
- Start Page
- 725
- End Page
- 730
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/105446
- DOI
- 10.3938/jkps.60.725
- ISSN
- 0374-4884
- Abstract
- Here, we report on the measurement of scintillation responses of scintillation fibers for precision dose verification in proton therapy. A detector equipped with two layers of 1-mm-thick scintillation fibers and 46-channel silicon photodiodes was constructed and tested with 45-MeV proton beams provided by the MC50 proton cyclotron at the Korea Institute of Radiological and Medical Science (KIRAMS). Scintillation responses of the detector for the protons were measured as a function of depth in an absorber made of PMMA (poly methyl methacrylate) and PET (polyester) films whose thicknesses varied from 0.148 to 2.0 g.cm(-2). Quenching of the scintillation responses of the detector was evaluated by comparison of the data to the specific energy loss predicted by GEANT4-based simulations. The first-order parameter of the Birks model, kB, for scintillation fibers, as derived from the ratios of specific energy losses to scintillation responses, was (2.38 +/- 0.17) x 10(-2).
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Collections - College of Science > Department of Physics > 1. Journal Articles
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