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YAN Yuanlin. Monte Carlo Simulation Study on Optimizing the Active Beam Delivery System at HIRFL[J]. Nuclear Physics Review, 2016, 33(1): 105-111. doi: 10.11804/NuclPhysRev.33.01.105
Citation: YAN Yuanlin. Monte Carlo Simulation Study on Optimizing the Active Beam Delivery System at HIRFL[J]. Nuclear Physics Review, 2016, 33(1): 105-111. doi: 10.11804/NuclPhysRev.33.01.105
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Monte Carlo Simulation Study on Optimizing the Active Beam Delivery System at HIRFL

doi: 10.11804/NuclPhysRev.33.01.105
  • 1.

    Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China;

  • 2.

    Key Laboratory of Heavy Ion Radiation Biology and Medicine of Chinese

  • 3.

    Academy of Sciences, Lanzhou 730000, China;

  • Publish Date: 2016-03-20
  • To obtain carbon ion beams suitable for the active spot scanning beam delivery system at the Heavy Ion Research Facility in Lanzhou (HIRFL), the Monte Carlo program SHIELD-HIT12A was used to study the influences of beam delivery distance and structure period of mini ridge filter on full width at the half maximum (FWHM) of beam spot and dose flatness at the isocenter of the treatment room. The present simulation study shows that the shorter was the beam delivery distance, the smaller was the FWHM of beam spot, but the worse was the dose flatness. The structure period of mini ridge filter was a key factor to account for the dose flatness at the isocenter. The smaller was the structure period of mini ridge filter, the better was the dose flatness. Based on the simulation results, we conclude that 2 mm structure period for a mini ridge filter statisfies the requirements on the FWHM of beam spot and dose flatness at the isocenter for the active spot scanning beam delivery system at HIRFL when the distance between the vacuum window and the isocenter is set shorter than 125 cm in the nozzle.
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  • 1. 

    沈阳化工大学材料科学与工程学院 沈阳 110142

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Monte Carlo Simulation Study on Optimizing the Active Beam Delivery System at HIRFL

doi: 10.11804/NuclPhysRev.33.01.105
  • 1. Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China;
  • 2. Key Laboratory of Heavy Ion Radiation Biology and Medicine of Chinese
  • 3. Academy of Sciences, Lanzhou 730000, China;
  • Publish Date: 2016-03-20

Abstract: To obtain carbon ion beams suitable for the active spot scanning beam delivery system at the Heavy Ion Research Facility in Lanzhou (HIRFL), the Monte Carlo program SHIELD-HIT12A was used to study the influences of beam delivery distance and structure period of mini ridge filter on full width at the half maximum (FWHM) of beam spot and dose flatness at the isocenter of the treatment room. The present simulation study shows that the shorter was the beam delivery distance, the smaller was the FWHM of beam spot, but the worse was the dose flatness. The structure period of mini ridge filter was a key factor to account for the dose flatness at the isocenter. The smaller was the structure period of mini ridge filter, the better was the dose flatness. Based on the simulation results, we conclude that 2 mm structure period for a mini ridge filter statisfies the requirements on the FWHM of beam spot and dose flatness at the isocenter for the active spot scanning beam delivery system at HIRFL when the distance between the vacuum window and the isocenter is set shorter than 125 cm in the nozzle.

YAN Yuanlin. Monte Carlo Simulation Study on Optimizing the Active Beam Delivery System at HIRFL[J]. Nuclear Physics Review, 2016, 33(1): 105-111. doi: 10.11804/NuclPhysRev.33.01.105
Citation: YAN Yuanlin. Monte Carlo Simulation Study on Optimizing the Active Beam Delivery System at HIRFL[J]. Nuclear Physics Review, 2016, 33(1): 105-111. doi: 10.11804/NuclPhysRev.33.01.105
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