A5065932815- Nuclear Physics and Applications
- Nuclear reactor physics and engineering
- Graphite, nuclear technology, radiation studies
- Radiation Therapy and Dosimetry
- Nuclear physics research studies
- Nuclear and radioactivity studies
- Particle Accelerators and Free-Electron Lasers
- Radiation Detection and Scintillator Technologies
- Particle accelerators and beam dynamics
- Radiopharmaceutical Chemistry and Applications
- Superconducting Materials and Applications
- Advanced X-ray Imaging Techniques
- Atomic and Subatomic Physics Research
- Cold Fusion and Nuclear Reactions
- Advanced Radiotherapy Techniques
- Magnetic confinement fusion research
- Fire dynamics and safety research
- Ion channel regulation and function
- Astronomical and nuclear sciences
- Radiation Effects in Electronics
- Quantum, superfluid, helium dynamics
- Atomic and Molecular Physics
- Crystallography and Radiation Phenomena
- Muon and positron interactions and applications
- Advanced Chemical Physics Studies
Pohang Accelerator Laboratory
2015-2024
Pohang University of Science and Technology
2015-2024
Catholic University of Daegu
2015
University of Ulsan
2013
Seoul National University
2008-2009
The construction of Pohang Accelerator Laboratory X-ray Free-Electron Laser (PAL-XFEL), a 0.1-nm hard free-electron laser (FEL) facility based on 10-GeV S-band linear accelerator (LINAC), is achieved in Pohang, Korea by the end 2016. 1.11 km-long building was completed 2014, and installation LINAC undulators started January 2015. LINAC, together with beamlines, commissioning began April 2016, first lasing FEL line 14 June progress PAL-XFEL its commission are reported here.
It is expected that about 600-GT CO2 to be emitted by the industrial sector for next 50 years. In order achieve goal reduce emission 75%, an innovative carbon capture and utilization technology should urgently developed implemented. From 2050, all flights taking off from any airport in Europe fueled with jet-oils more than 70% of which sustainable aviation fuel (SAF). By same year, petrol-based jet-fuel consumed US will replaced SAF. Therefore, 190 private companies located 330 cities, 73%...
Production cross sections of $^{209}\mathrm{Bi}(p, xn)^{207,206,205,204,203}\mathrm{Po}, ^{209}\mathrm{Bi}(p$, pxn)$^{207,206,205,204,203,202}\mathrm{Bi}$, and $^{\mathrm{nat}}\mathrm{Pb}(p, xn$) $^{206,205,204,203,202,201}\mathrm{Bi}$ reactions were measured to fill the gap in excitation functions up 100 MeV as well figure out effects different nuclear properties on proton-induced including heavy nuclei. The targets arranged two stacks consisting Bi, Pb, Al, Au foils Pb plates. proton beam...
During the decommissioning of nuclear and particle accelerator facilities, a considerable amount large-scale radioactive waste may be generated. Accurately defining activation level is crucial for proper disposal. However, directly measuring internal radioactivity distribution poses challenges. This study introduced novel technology employing machine learning to assess based on external measurements. Random within structure were established, photon spectrum measured by detectors from outside...
Background Concrete activation in cyclotron vaults is a major concern associated with their decommissioning because considerable amount of activated concrete generated by second-ary neutrons during the operation cyclotrons. Reducing important high cost radioactive waste management. This study aims to investigate capability neutron absorbing materials reduce activa-tion. Materials and Methods The Particle Heavy Ion Transport code System (PHITS) was used simulate target room. dimensions room...
Background: With the increase in number of particle accelerator facilities under either operation or construction, accurate calculation using Monte Carlo codes become more important shielding design and radiation safety evaluation facilities. Materials Methods: The calculations with different physics models were applied both cases: only model mix match method MCNPX code. issued conditions interactions 600 MeV proton 290 MeV·n-1 oxygen a carbon target. Both cross-section libraries, JENDL High...
Production cross sections for the $^{93}\mathrm{Nb}(p,x)^{90}\mathrm{Mo},\phantom{\rule{0.28em}{0ex}}^{92m,90,89m}\mathrm{Nb},\phantom{\rule{0.28em}{0ex}}^{89,88,86}\mathrm{Zr}$, and $^{88,87m,87g}\mathrm{Y}$ reactions were measured using a stacked-foil technique in proton energy range of 58--100 MeV. The target was arranged stack including Nb, Al, Au foils, Pb plates irradiated with 100-MeV protons. After irradiation, production yields interested radionuclei by $\ensuremath{\gamma}$-ray...
Production cross sections for $^{209}\mathrm{Bi}$(p, xn)$^{207,206,205,204}\mathrm{Po}$ and pxn)$^{207,206,205,204,203}\mathrm{Bi}$ reactions were measured using the stacked-foil technique. In our previous work, excitation functions of mentioned at proton energies from 60 to 100 MeV. this are extended down energy 40 Two targets arranged in two different stacks including Bi, Al, Au foils as well Bi Pb plates. After irradiations, production yields interested radionuclei by...
Neutron imaging is a powerful and nondestructive tool for testing materials in industrial research applications. Compact accelerator neutron sources are gaining interest application techniques, such as Bragg edge transmission imaging. Delivering high flux with narrow pulse width suppressed photons at the sample position fundamental factors designing source In this study, Monte Carlo calculations were performed to simulate 40-MeV electron beam impinging on cylindrical tungsten target....
2013년 2월 25일 접수 / 3월 16일 1차 수정 18일 채택 Skyshine은 고에너지 가속기의 차폐 설계 시 반드시 고려되는 중요한 현상이다.본 연구에서는 전자 가속기 에 대한 중성자 skyshine 평가 방법을 새롭게 제시하였으며 기존의 방법들과 비교하여 타당성을 검증하였다.고에너지 전자가속기로부터 원거리 지역의 방사선량을 계산하기 위해 몬테카를로 코드, FLUKA와 PHITS를 이용하였다.가속기 건물로부터 지역까지 도달하는 방사선장의 경로를 skyshine, direct, groundshine, multiple-shine으로 분류하였 다. 분류된 각각의 성분이 총 유효선량에 기여하는 정도를 평가하였다.방사선원 계산에는 10 GeV 전자가 두꺼운 표적에 입사하여 생성되는
The leakage of radioactive materials generated at particle accelerator facilities is one the important issues in view radiation safety. In this study, fire and flooding were considered as non-radiation disasters which result materials. To analyse expected effects each disaster, case study on fired flooded was carried out with property investigation interesting presented tunnel activity estimation. Five major investigated: dust, insulators, concrete, metals paints. activation levels concerned...