47 research outputs found

    Simulation of an autonomous power supply system based on lithium-iron-phosphate (LiFePO[4])

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    Optimization of equipment composition and operation mode of power supply systems with renewable energy sources is an important and urgent task. As a result of the study, graphs of generation and consumption of electrical energy, charge-discharge characteristics of electric energy storage devices were constructed, the type and capacity of storage batteries were selected, the solar power plant scheme was developed and the main equipment was selected in accordance with the scheme, the economic efficiency of the solar power plant project was estimated and the payback period was determined

    1903-1965

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    Search for dark matter produced in association with bottom or top quarks in √s = 13 TeV pp collisions with the ATLAS detector

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    A search for weakly interacting massive particle dark matter produced in association with bottom or top quarks is presented. Final states containing third-generation quarks and miss- ing transverse momentum are considered. The analysis uses 36.1 fb−1 of proton–proton collision data recorded by the ATLAS experiment at √s = 13 TeV in 2015 and 2016. No significant excess of events above the estimated backgrounds is observed. The results are in- terpreted in the framework of simplified models of spin-0 dark-matter mediators. For colour- neutral spin-0 mediators produced in association with top quarks and decaying into a pair of dark-matter particles, mediator masses below 50 GeV are excluded assuming a dark-matter candidate mass of 1 GeV and unitary couplings. For scalar and pseudoscalar mediators produced in association with bottom quarks, the search sets limits on the production cross- section of 300 times the predicted rate for mediators with masses between 10 and 50 GeV and assuming a dark-matter mass of 1 GeV and unitary coupling. Constraints on colour- charged scalar simplified models are also presented. Assuming a dark-matter particle mass of 35 GeV, mediator particles with mass below 1.1 TeV are excluded for couplings yielding a dark-matter relic density consistent with measurements

    Introduction to network security

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    Lightweight HIP

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