Development and Characterization of Tissue Equivalent Proportional Counter for Radiation Monitoring in International Space Station

• Main Authors: Uk-Won Nam, Chang Hwy Lim, Jae Jin Lee, Jeonghyun Pyo, Bong-Kon Moon, Dae-Hee Lee, Youngsik Park, Hyun Ok Kim, Myungkook Moon, Sunghwan Kim
• Format: Article
• Language: English
• Published: Korean Space Science Society (KSSS) 2013-06-01
• Series: Journal of Astronomy and Space Sciences
• Subjects: tissue equivalent proportional counter; linear energy transfer; international space station
• Online Access: http://ocean.kisti.re.kr/downfile/volume/kosss/OJOOBS/2013/v30n2/OJOOBS_2013_v30n2_107.pdf
• ISSN: 2093-5587; 2093-1409

Tissue equivalent proportional counter (TEPC) can measure the Linear Energy Transfer (LET) spectrum and calculate the equivalent dose for the complicated radiation field in space. In this paper, we developed and characterized a TEPC for radiation monitoring in International Space Station (ISS). The prototype TEPC which can simulate a 2 μm of the site diameter for micro-dosimetry has been tested with a standard alpha source (241Am, 5.5 MeV). Also, the calibration of the TEPC was performed by the 252Cf neutron standard source in Korea Research Institute of Standards and Science (KRISS). The determined calibration factor was kf = 3.59×10-7 mSv/R.