Measurement of scintillation responses of scintillation fibers for dose verification in proton therapy

C. Kim; B. Hong; G. Jhang; E. Joo; K. S. Lee; K. S. Lee; S. Lee; S. K. Lee; S. K. Park; H. H. Shim; S. S. Shin; K. S. Sim; H. K. Cha

doi:10.3938/jkps.60.725

Measurement of scintillation responses of scintillation fibers for dose verification in proton therapy

C. Kim, B. Hong, G. Jhang, E. Joo, K. S. Lee, K. S. Lee, S. Lee, S. K. Lee, S. K. Park, H. H. Shim, S. S. Shin, K. S. Sim, H. K. Cha

Department of Physics

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

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) × 10 ^-2.

Original language	English
Pages (from-to)	725-730
Number of pages	6
Journal	Journal of the Korean Physical Society
Volume	60
Issue number	5
DOIs	https://doi.org/10.3938/jkps.60.725
Publication status	Published - 2012 Mar

Keywords

Birks-model kB parameter
Dose verification
GEANT4
Proton therapy
Scintillation fibers

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.3938/jkps.60.725

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Measurement of scintillation responses of scintillation fibers for dose verification in proton therapy. / 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.

In: Journal of the Korean Physical Society, Vol. 60, No. 5, 03.2012, p. 725-730.

Research output: Contribution to journal › Article › peer-review

@article{4dbdd864898f48fdb8d5fae608c0e663,

title = "Measurement of scintillation responses of scintillation fibers for dose verification in proton therapy",

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) × 10 -2.",

keywords = "Birks-model kB parameter, Dose verification, GEANT4, Proton therapy, Scintillation fibers",

author = "C. Kim and B. Hong and G. Jhang and E. Joo and Lee, {K. S.} and Lee, {K. S.} and S. Lee and Lee, {S. K.} and Park, {S. K.} and Shim, {H. H.} and Shin, {S. S.} and Sim, {K. S.} and Cha, {H. K.}",

note = "Funding Information: This study was supported by the Korea Science and Engineering Foundation (Grant No. 20110018371). This study was also strongly motivated by future applications to medical sciences at the Korea Rare Isotope Accelerator (KoRIA). The authors also wish to thank Dr. Tae-Gun Yang and Mr. Jun Yong Han, the Korea Institute of Radiological and Medical Science, for technical assistance with the MC50-proton beam line.",

year = "2012",

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doi = "10.3938/jkps.60.725",

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AU - Hong, B.

AU - Jhang, G.

AU - Joo, E.

AU - Lee, K. S.

AU - Lee, S.

AU - Lee, S. K.

AU - Park, S. K.

AU - Shim, H. H.

AU - Shin, S. S.

AU - Sim, K. S.

AU - Cha, H. K.

N1 - Funding Information: This study was supported by the Korea Science and Engineering Foundation (Grant No. 20110018371). This study was also strongly motivated by future applications to medical sciences at the Korea Rare Isotope Accelerator (KoRIA). The authors also wish to thank Dr. Tae-Gun Yang and Mr. Jun Yong Han, the Korea Institute of Radiological and Medical Science, for technical assistance with the MC50-proton beam line.

PY - 2012/3

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N2 - 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) × 10 -2.

AB - 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) × 10 -2.

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KW - Dose verification

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KW - Proton therapy

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