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Information × Registration Number 0214U001729, 0111U001467 , R & D reports Title The development of detecting unit prototype for the compact satellite device SIDRA aimed to registering high energy particle fluxes and charge radiation accumulated dozes of the space project "Solar monitor" popup.stage_title Head Dudnik Olexiy, Доктор фізико-математичних наук Registration Date 25-04-2014 Organization Kharkov National University named after V.N. Karazin popup.description2 Object of the study - the prototype of detector unit for compact satellite SIDRA instrument for registration of high energy particle fluxes of the space project "Solar Monitor." The aim of the work - development and manufacturing of detector unit prototype for the SIDRA device; computer simulation of detector responses, design and manufacturing of mechanical parts of detector module, elaboration of principal electric schemes of charge sensitive preamplifiers and shapers of weak analog signals. The method of investigation - Monte Carlo simulation with the usage of Cern GEANT4 toolkit, design of mechanical parts by using the design software AutoCAD; tests of electrical circuits of analog signal processing unit by using the automatic design system NI Multisim 10.1.1, and with the help of laboratory equipment and radioactive sources. It was performed the computer simulation of the electron passing through silicon detectors D1 and D2 with the primary energies up to 1 and 4 MeV, accordingly. It was obtained values of minimal energies, from which the detectors D1 and D2 are beginning to register the electrons. Computer simulation has been performed also of nuclei passing through the telescopic system of the device. For these purposes it was used libraries, which describe the passage of protons, deuterons, alpha-particles, nuclei of carbon, nitrogen and oxygen through the material of semiconductor detectors. It was obtained dependences of deposited energies in the detector D2 as a function of primary energies of light nuclei, and of absorbed energies in the detector D2 versus absorbed energies in the detector D1. The design of mechanical units of the SIDRA instrument detector module was performed. According to designed drawings the mechanical parts have been manufactured. It was elaborated the analog signal processing unit, and the simplified and detailed structure scheme of the analog processing unit. It was developed also the electrical principal schemes of charge-sensitive pre-amplifiers, amplifiers, shapers, and the sample and hold apparatus of shaped analog signals. It was investigated spectrometric characteristics of specially manufactured small-sized organic and inorganic scintillation detectors based on cube-shaped crystals of stilbene, paraterphenyl, thallium activated cesium iodide, and plastic scintillators based on polystyrene. Vacuum photomultiplier tube (PMT), silicon photomultipliers with the number of pixels 3600 and the size of each pixel 50 ? 50 um, and a silicon photodiode with an active area of 5 ? 5 mm2 of "Hamamatsu Photonics" production were used as photo detectors. Light yields of scintillation detectors were determined relatively to the light yield of the detector based on stilbene crystal with the usage of vacuum and solid-state photomultipliers. Results of scientific research will be implemented during the satellite experiment titled "Solar monitor", which will be aimed to monitoring of the radiation environment of the near Earth space, by manufacturing and installation of the flight model of the SIDRA device on board the Russian spacecraft and measuring the fluxes of high energy particles. Product Description popup.authors Андрющенко Л. Бояринцев А. Дудник О. Курбатов Є. Тімакова Т. popup.nrat_date 2020-04-02 Close