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Kim, K. R.

Paper Title Page
TU6PFP010 Feasibility Studies on the In-Vivo Experiments at the MC-50 Cyclotron Using a Prototype LEPT System 1312
 
  • K. R. Kim, J.-H. Jang, M.H. Jung, S.-K. Lee
    KAERI, Daejon
  • Y.M. Lee
    Kyungpook National University, Daegu
  • T.K. Yang
    KIRAMS, Seoul
  
 

Funding: This work was perfomed as a part of the Proton Engineering Frontier Project and supported by the ministry of Education, Science and Technology of Korea.


A prototype LEPT(Low Energy Proton Therapy) system was developed and established at the MC-50 cyclotron in 2007. Some of the users of the PEFP (Proton Engineering Frontier Project) has been requiring a irradiation system for in-vivo experiments for the beam utilization in the fieds of medical and biological sciences. We are studying on the possibility of in-vivo experiments the prototype LEPT system. The LEPT system consists of collimators, range shifter, modulator for SOBP, dose meaurement system, etc. The energy and current from the cyclotron was 45 MeV and a few nA. For the in-vivo experiments accurate control of dose rate and penetration depth range is essential. The other important issue is how we can control the irradiation area and depth with high uniform dose distribution. We investigated the dose rate and uniformity of dose distribution inside the sample using PMMA and water phantom. The dose was measured by using ionization chamber and GAF films. The dose rate was 0.2~1Gy/sec and the penetration depth was 10~15 mm. The further studies using small animals using this LEPT system will be done by the users.

  
TU6PFP011 Preliminary Results of Sample Activation Measurement Using a HPGe Detector for the Nano Particle Fabrication by Proton Beam 1315
 
  • K. R. Kim, J.-H. Jang, M.H. Jung, H.O. Kim, C.W. Lee
    KAERI, Daejon
  • G.S. Chai
    Samsung SDI Co. Ltd., Gyeonggi-do
  • H.J. Kim
    Kyungpook National University, Daegu
  • M.K. Min
    SAMSUNG SDI CO. LTD, Gyeonggi-do
  
 

Funding: This work was performed as a part of the Proton Engineering Frontier Project supported by the Ministry of Education, Science and Technology of Korea.


The sample activation during proton beam irradiation sometimes interrupt the measurement and investigation of the instant changes of the samples after irradiation. During the experiments for nano particle fabrications with ~35MeV and ~20uA, we found that the samples was highly activated after the proton beam irradiation. To investigate the source of the rdadiation from the samples, we measured the energy spectrum of gamma ray using HPGe spectroscopy. The results was compared to the calculated results by the MCNP code simulation. The sample was small amount of heavy metal dispersed in enthanol in the beaker made of quartz.

  
TU6RFP038 Conceptual Design of Beam Transport Lines for the PEFP User Facility 1626
 
  • B.-S. Park, Y.-S. Cho, B.H. Choi, I.-S. Hong, J.-H. Jang, H.S. Kim, K. R. Kim, H.-J. Kwon, H.R. Lee, S.P. Yun
    KAERI, Daejon
  
 

Funding: This work is supported by the Ministry of Education, Science and Technology of Korea.


PEFP (Proton Engineering Frontier Project) beamlines will be supplied either 20-MeV or 100-MeV proton beams from the 100-MeV proton linear accelerator for beam applications. Each proton beam will be transported to 2 beamlines for industrial purpose and 3 beamlines for the researches. Beam distribution to 3 research beam lines will be conducted sequentially by programmable AC magnet. To provide flexibility of the irradiation conditions, each beam line is designed to have specific beam parameters. We have designed the beamlines to the targets for wide or focused beams, external or in-vacuum beams, and horizontal or vertical beams. The detail design of each beamline will be reported.