초록 ▼

1차 년도 수행성과
- 최초로 저잡음증폭기가 내장된 유닛 안테나/검파기 모듈을 개발하여 기존에 비해 장비의 정비 및 성능 향상에 도움이 될 것이며 실제 ECEI 시스템에 적용이 가능함.
- 2차 년도에 진행될 가변형 Electronics의 설계도를 구성함.
2차 년도 수행성과
- 1차 년도에 제작된 유닛 안테나/검파기 모듈의 안테나, 발룬, 렌즈 등을 최적화하여 개선함.
- 중심주파수 간격과 대역폭을(900MHz&700MHz, 650MHz&450MHz) 2개의 모드로 가변 가능한 가변형 Electronic

1차 년도 수행성과
- 최초로 저잡음증폭기가 내장된 유닛 안테나/검파기 모듈을 개발하여 기존에 비해 장비의 정비 및 성능 향상에 도움이 될 것이며 실제 ECEI 시스템에 적용이 가능함.
- 2차 년도에 진행될 가변형 Electronics의 설계도를 구성함.
2차 년도 수행성과
- 1차 년도에 제작된 유닛 안테나/검파기 모듈의 안테나, 발룬, 렌즈 등을 최적화하여 개선함.
- 중심주파수 간격과 대역폭을(900MHz&700MHz, 650MHz&450MHz) 2개의 모드로 가변 가능한 가변형 Electronics의 개발하였으며, 실제 ECEI 시스템에 적용이 가능함.
3차 년도 수행성과
- 유닛 안테나/검파기 모듈 및 가변형 Electronics 모듈을 최적화하여 개선함.

(출처 : 보고서 요약서 3p)

Abstract ▼

□ Purpose & Contents
The final objective of this study is to improve the performance and functionality of the existing ECEI device core components, improve the structure, and apply it to the KSTAR ECEI system to effectively acquire 3D image information of the plasma. While various attempts on nuc

□ Purpose & Contents
The final objective of this study is to improve the performance and functionality of the existing ECEI device core components, improve the structure, and apply it to the KSTAR ECEI system to effectively acquire 3D image information of the plasma. While various attempts on nuclear fusion studies has been conducted through nuclear fusion tokamak, MHD and plasma turbulence phenomenon remains as prominent issues. To resolve these issues, ECE Imaging (ECEI) device, an advanced diagnostic device that provides measurement of tokamak plasma’s internal temperature in 2D and 3D images, was developed by UNIST/Postech research group and currently being used in KSTAR equipment. In this study, the performance, functionality and efficiency of the existing ECEI device core components has been improved, and 3D video information acquisition has been effectively performed. During the first year, unit antenna module for ECEI was developed, which retain its high performance while being easily detachable, making antenna arrangement more convenient. DC-biasing connector is built in the unit module. The low noise amplifier which was connected outside the antenna, is now built inside the unit module for further miniaturization of the array box. In addition, the tunable ECEI video module is fabricated into two modules and separated into the two bands of MHD and plasma turbulence. This method makes it possible to change the center frequency interval and bandwidth of every channels. In the second year, the impedance mismatch due to the unit module and the variation of antenna radiation characteristic on the ECEI unit antenna was minimized. Furthermore, the performances of the bias terminal that is located on the unit module and the built-in low noise amplifier was optimized. Tunable electronics that was designed in the first year was developed, and compared to the existing it has better linearity, noise level, etc. In the third year, the compatibility of our developed ECEI unit antenna and the tunable ECEI video module to the KSTAR equipment was confirmed.

□ Results
The ECEI core components that is developed through KNU research group’s own domestic research and development has been proven to have excellent performance, maintainability and functionality, and also compatible to the existing diagnostic devices. Modularization of the W/F band antenna/ detector unit caused the initial installation cost to be slightly increased, but the maintenance time and cost is drastically reduced. Furthermore, in response to various plasma modes, the ECEI IF video module is divided into two appropriate bands so that the noise in the system is reduced, contributing to improve the performance of the plasma diagnostic device.

□ Expected Contribution
This study developed functional microwave/mm-wave modular core device for ECEI system implementation which established our own series of techniques, independent from foreign intervention. Furthermore, it is possible to acquire suitable technology for ITER and other plasma fusion devices. By virtue of the improved development technology of this study, it is possible to make our nuclear fusion diagnostic device available for export to foreign countries, making our country’s excellence in technology known to the world.

(출처 : SUMMARY 5p)

목차 Contents

• 표지 ... 1
• 제 출 문 ... 2
• 보고서 요약서 ... 3
• 국문 요약문 ... 4
• SUMMARY ... 5
• 목차 ... 6
• 1. 연구 개발 과제의 개요 ... 7
• 2. 국내외 기술 개발 현황 ... 8
• 3. 연구 수행 내용 및 결과 ... 9
• -1차년도 연구 수행 내용 및 결과 ... 9
• -2차년도 연구 수행 내용 및 결과 ... 26
• 4. 목표 달성도 및 관련 분야 기여도 ... 45
• 5. 연구 결과의 활용 계획 ... 48
• 6. 연구 과정에서 수집한 해외 과학 기술 정보 ... 49
• 7. 연구 개발 결과의 보안 등급 ... 49
• 8. 국가과학기술종합정보시스템에 등록한 연구 시설·장비 현황 ... 49
• 9. 연구 개발 과제 수행에 따른 연구실 등의 안전 조치 이행 실적 ... 50
• 10. 연구 개발 과제의 대표적 연구 실적 ... 54
• 11. 기타 사항 ... 55
• 12. 참고 문헌 ... 57
• 끝페이지 ... 58