Design of array type Si PIN photodetector for neutron imaging of cargo inspection system

While radiation equipment industry such as medical imaging, security inspection, military and space are received huge attention as a new growth industry, the core parts of security inspection system and radiation imaging equipment are mostly imported due to lack of source technology in Korea. Thus related source technology should be developed. And also global market are growing faster due to expanded needs. In this paper, optimized combination of scintillator and Si-PIN photodetectors is suggested based on the neutron dose calculation. And also, low noise 4 channel array type Si-PIN photodetector were designed for matching with plastic scintillator. Expected neutron dose of cargo inspection system is calculated and optimized combination of plastic scintillator and Si-PIN photodetectors is suggested. To maximize the signal to noise ratio, 4 channel array type Si-PIN photodetector were designed and fabrication process optimization would be carried out at the Korea National Radiation Equipment Fab.