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윤성운(S. YOON),이상일(S. LEE),박미정(M. J. PARK),손창욱(C. W. SOHN),최용준(Y. CHOI),유정현(J. YOO),Lingxue JIN,김무상(M. KIM),김도균(D. KIM),기태경(T. KI),서미경(M. K. SEO),진민성(M. S. JIN) 대한기계학회 2022 대한기계학회 춘추학술대회 Vol.2022 No.11
RAON, a heavy ion superconducting linear accelerator has been installed in Daejeon, S. Korea. A cryogenic system, which was installed and tested its performance cool the accelerator down until 269 K. The system consists of a lot of components, cryogenic plants, a distribution box, cryogenic distribution lines, cryomodules and valve boxes. A cryogenic control system which is complicated and integrated by EPICS (Experimental Physics and Industrial Control System) is developed and the graphic user interface which is designed by CS-studio (Control System-studio) is developed. They were verified during the accelerator cool-down but they need some modification based on the cool-down operation. This paper summarizes the RAON cryogenic system infrastructure and graphic user interfaces.
윤성운(S. YOON),이상일(S. LEE),박미정(M. J. PARK),손창욱(C. W. SOHN),최용준(Y. CHOI),유정현(J. YOO),Lingxue JIN,김무상(M. KIM),김도균(D. KIM),기태경(T. KI),서미경(M. K. SEO),진민성(M. S. JIN) 대한기계학회 2022 대한기계학회 춘추학술대회 Vol.2022 No.11
RAON, a heavy ion superconducting linear accelerator has been installed in Daejeon, S. Korea. A cryogenic system, which was installed and tested its performance cool the accelerator down until 269 K. The system consists of a lot of components, cryogenic plants, a distribution box, cryogenic distribution lines, cryomodules and valve boxes. A cryogenic control system which is complicated and integrated by EPICS (Experimental Physics and Industrial Control System) is developed and the graphic user interface which is designed by CS-studio (Control System-studio) is developed. They were verified during the accelerator cool-down but they need some modification based on the cool-down operation. This paper summarizes the RAON cryogenic system infrastructure and graphic user interfaces.
스핀전달토크형 자기저항메모리(STT-MRAM) 기술개발 동향
김도균(D. K. Kim),조지웅(J. U. Cho),노수정(S. J. Noh),김영근(Y. K. Kim) 한국자기학회 2009 韓國磁氣學會誌 Vol.19 No.1
Reduction of the critical current density (Jc) for STT magnetization switching is most important issue of magnetic tunnel junctions (MTJs) based MRAM. This report describes how to decrease the Jc and will introduce the recent research progresses of STT-MRAM devices with material engineering and structural improvement, respectively.
Design of the RAON Accelerator Systems
전동오,I. S. Hong,H. J. Kim,J. W. Kim,R. M. Bodenstein,차혁진,S. J. Choi,최숙,O. R. Choi,H. Do,B. H. Choi,C. J. Choi,J. Han,W. K. Han,M. O. Hyun,H. Jang,J. D. Joo,M. J. Joung,H. C. Jung,Y. C. Jung,김도균,E. Kim 한국물리학회 2014 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.65 No.7
The RAON is the name of the heavy ion accelerator facility under construction in Korea thatincludes the In-flight Fragment (IF) and Isotope Separation On-Line (ISOL) facilities to supportcutting-edge research in various science fields. The superconducting linac is the driver for the IFfacility that can accelerate beams from proton to uranium with 200 MeV/u, 400 kW (for uraniumbeam). A 70-MeV, 1-mA H− cyclotron is the driver for the ISOL facility and is followed by apost-accelerator consisting of s superconducting linac that can accelerate rare-isotope (RI) beamsand deliver them to experimental halls. These facilities provide high-intensity stable ion and rareisotope (RI) beams for domestic and international users. In this paper, design and prototypingefforts for the RAON accelerator systems are presented.