Physical design and Monte Carlo simulations of a space radiation detector onboard the SJ-10 satellite

【摘要】 A radiation gene box(RGB) onboard the SJ-10 satellite is a device carrying mice and drosophila cells to determine the biological effects of space radiation environment. The shielded fluxes of different radioactive sources were calculated and the linear energy transfers of γ-rays,electrons,protons and α-particles in the tissue were acquired using A-150 tissue-equivalent plastic. Then,a conceptual model of a space radiation instrument employing three semiconductor sub-detectors for deriving the charged and uncharged radiation environment of the RGB was designed.The energy depositions in the three sub-detectors were classified into 15 channels(bins) in an algorithm derived from the Monte Carlo method. The physical feasibility of the conceptual instrument was also verified by Monte Carlo simulations.更多还原

【Abstract】 A radiation gene box(RGB) onboard the SJ-10 satellite is a device carrying mice and drosophila cells to determine the biological effects of space radiation environment. The shielded fluxes of different radioactive sources were calculated and the linear energy transfers of γ-rays,electrons,protons and α-particles in the tissue were acquired using A-150 tissue-equivalent plastic. Then,a conceptual model of a space radiation instrument employing three semiconductor sub-detectors for deriving the charged and uncharged radiation environment of the RGB was designed.The energy depositions in the three sub-detectors were classified into 15 channels(bins) in an algorithm derived from the Monte Carlo method. The physical feasibility of the conceptual instrument was also verified by Monte Carlo simulations.更多还原