위치민감형 광다이오드 검출기의 신호처리회로 개발과 적용

Development of Signal Process Circuit for PSAPD Detector

  • 윤도군 (고려대학교 보건과학대학 방사선학과) ;
  • 이원호 (고려대학교 보건과학대학 방사선학과)
  • Yoon, Do-Kun (Dept. of radiologic science, College of health science, Korea University) ;
  • Lee, Won-Ho (Dept. of radiologic science, College of health science, Korea University)
  • 투고 : 2012.08.28
  • 심사 : 2012.12.06
  • 발행 : 2012.12.31

초록

본 연구는 위치 민감형 광 증폭 다이오드로부터 나오는 신호를 증폭 및 파형 변화 후 신호의 크기를 검출하여 일정시간 동안 유지시키는 뒷단 회로 개발에 관한 연구이다. 신호발생기에서 발생한 소신호를 증폭 소자를 통한 안정적인 증폭 후 미분회로를 통하여 신호 파형을 검출하기 수월한 형태로 변형 하고, peak/hold 회로에서 피크의 최대점을 일정시간 유지하여 신호의 수집을 원활하게 하였다. 본 회로에 대한 독립적인 성능 평가를 위하여 상용 장비로부터의 검사신호를 입력으로 사용하였다.

The aim of this study was to develop a signal process circuit for a position sensitive avalanche photodiode detector. The circuit parts consisted of amplification, differential and peak/hold circuit. This research was the baseline to develop highly compact radiation detector. The signal was amplified by an amplification chip and its shape was changed in a differential circuit to minimize the pulse tailing. The peak/hold circuit detect the peak of the signal from the differential circuit and hold the amplitude of the peak for data acquisition. In order to test the intrinsic function of the circuit, the input signal was transmitted from a commercial pulse generator.

키워드

참고문헌

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