The International Space Station (ISS) orbits the Earth within the inner radiation belt, where high-energy protons are produced by collisions of cosmic rays to the upper atmosphere. About 6 astronauts stay in the ISS for a long period, and it should be important to monitor and assess the radiation environment in the ISS. The tissue equivalent proportional counter (TEPC) is an instrument to measure the impact of radiation on the human tissue. KASI is developing a TEPC as a candidate payload of the ISS. Before the detailed design of the TEPC, we performed simulations to test whether our conceptual design of the TEPC will work propertly in the ISS and to predict its performance. The simulations estimated that the TEPC will measure the dose equivalent of about 1:1 mSv during a day in the ISS, which is consistent with previous measurements.

ABSTRACT
1. 서론
2. 방법
    2.1. 국제우주정거장 내 입자 환경 모사
    2.2. ISS 내 조직등가비례계수기 모사
3. 결과
4. 결론
참고 문헌

• 표정현(한국천문연구원) | JEONGHYUN PYO (Korea Astronomy and Space Science Institute (KASI))
• 이재진(한국천문연구원) | JAE JIN LEE (Korea Astronomy and Space Science Institute (KASI))
• 남욱원(한국천문연구원) | UK-WON NAM (Korea Astronomy and Space Science Institute (KASI))
• 김성환(청주대학교) | SUNG HWAN KIM (Cheongju University)
• 김현옥(한국원자력연구원) | HYUN OK KIM (Korea Atomic Energy Research Institute (KAERI))
• 임창휘(한국원자력연구원) | CHANG HWY LIM (Korea Atomic Energy Research Institute (KAERI))
• 박귀종(한국천문연구원) | KWIJONG PARK (Korea Astronomy and Space Science Institute (KASI))
• 이대희(한국천문연구원) | DAE-HEE LEE (Korea Astronomy and Space Science Institute (KASI))
• 박영식(한국천문연구원) | YOUNGSIK PARK (Korea Astronomy and Space Science Institute (KASI))
• 문명국(한국원자력연구원) | MYUNG KOOK MOON (Korea Atomic Energy Research Institute (KAERI))