A Design and its Validation of a Proton Recoil Telescope with a Silicon Detector for Measurements of Fast Neutrons

作者：Ham Cheolmin; Chavan Vivek Raghunath; Bak Sang In; Shim Chungbo; Moon Dalho; Kim Yangkyu; Chae Kyung Yuk; Park Tae Sun; Hong Seung Woo^*; Joo Hanwool; Park Hyeonseo

来源：Journal of the Korean Physical Society, 2018, 73(3): 271-277.

DOI：10.3938/jkps.73.271

• Neutron detector
• Proton recoil telescope
• Monte Carlo simulation
• PHITS
• Silicon detector
• D-D generator

A silicon detector combined with a thin polyethylene converter and a collimator is designed as a simple proton recoil telescope (PRT) detector for detecting 2.45 MeV neutrons from a D-D neutron generator. Monte Carlo simulations are performed for a quantitative optimization of the geometrical parameters of the detector that determine the statistics and the spectrum of recoil protons. On the basis of the optimized geometry, a 15 mu m polyethylene converter and a 2.5 mm thick stainless steel collimator are chosen for the design of a PRT. A test experiment is done by using 2.45 MeV neutrons from a D-D generator at the Korea Research Institute of Standards and Science. Energy calibration of the silicon detector is done by using proton beams from the MC-50 cyclotron at the Korea Institute of Radiological & Medical Sciences. A peak corresponding to 2.45 MeV neutrons is observed. Neutron detection efficiency of our PRT detector for 2.45 MeV neutrons is found to be about 3 x 10 (-6).

• 出版日期2018-8