Survey of the ATLAS Pixel Detector Components

This document provides a description of the survey performed on different components of the ATLAS Pixel Detector at different stages of its assembly

ERA5 reanalysis for the data interpretation on polarization laser sensing of high-level clouds

Interpreting the results of a high-level clouds (HLCs) lidar study requires a comparison with the vertical profiles of meteorological quantities. There are no regular radiosonde measurements of vertical profiles of meteorological quantities in Tomsk. The nearest aerological stations are several hundred kilometers away from the lidar and perform radiosonde measurements only a few times a day, whereas lidar experiments are performed continuously throughout the day. To estimate meteorological conditions at the HLC altitudes, we propose to use the ERA5 reanalysis. Its reliability was tested by comparing with the data from five aerological stations within a radius of 500 km around Tomsk. A labeled database of the lidar, radiosonde, and ERA5 data (2016–2020) for isobaric levels 1000–50 hPa was created. The temperature reconstruction error over the entire altitude range was characterized by an RMSE of 0.8–2.8 ◦C, bias of 0–0.9, and Corr ~1. The accuracy of the relative vertical profiles (RMSE 25–40%, Bias 10–22%, and Corr <0.7) and specific humidity (RMSE 0.2–1.2 g/kg, Bias ~0 g/kg, and Corr ~0) at the HLC altitudes were unsatisfying. The ERA5 data on wind direction and speed for the HLC altitudes were promising

ATLAS Detector Paper Back-Up Note: Electrons and Photons

This is the supporting note to the ATLAS Detector paper for electron and photon reconstruction with the Inner Detector. It describes the software used to produce the results presented in the ATLAS Detector paper

АКТУАЛЬНЫЕ ЗАДАЧИ ПОВЫШЕНИЯ ЭФФЕКТИВНОСТИ ВЫСШЕЙ ШКОЛЫ НА СОВРЕМЕННОМ ЭТАПЕ РАЗВИТИЯ РОССИИ

The education system continues to be the subject of attention of science and government, business and society. The authors express their own vision of progress based on cooperation of science and higher education.Система образования продолжает оставаться предметом внимания науки и власти, бизнеса и общества. Авторы высказывают собственное видение достижения прогресса на основе взаимодействия науки и высшей школы

ИЗВЛЕЧЕНИЕ ЦВЕТНЫХ И БЛАГОРОДНЫХ МЕТАЛЛОВ ИЗ ЭЛЕКТРОННОГО ЛОМА: ЭКОНОМИЧЕСКИЕ ПОКАЗАТЕЛИ

A process flow diagram for the complex differential extraction of precious and nonferrous metals from multi-component electronic scrap has been proposed for the purpose of improvement of the enterprise economic status in the secondary metallurgy. The advantages of the new technology and the results of extraction are given. The profit performances, which have been obtained as a result of introducing the technology, the together with the gold value as the main product during incidental extraction of other valuable components are presented. The efficiency coefficient of complex extraction of non-ferrous and precious metals is calculated by formula: K = Profit/Expenses. The effect of procurement prices on the profit is analyzed. The profit decrease per 1 ton of scrap is found to amount to 0,01 to 0,05 % with increasing the procurement price of up to 100 % for the content of precious metals at the rate of the Central Bank of Russia. Consequently, there is the possibility of significant growth of the procurement price for raw materials in comparison with the equilibrium prices of the market. The dependence of the annual profit on increased productivity for different scrap types has been analyzed. The compositions are recommended the procurement prices of which are to be increased. Realization the administrative impact on the scope of raw material supplies with the use of the pricing strategies is shown to be possible. The price increase for certain scrap types will provide the opportunity to attract suppliers, to increase the production, to expand the range of products, and obtain the additional income. Implementation of the proposed flowsheet for the complex recovery of valuable components from electronic scrap and the use of the raw materials procurement price increasing strategy for as a specific strategy for purchasing necessary resources and their distribution will allow us to improve the economic efficiency of the business activity. Increase in the profit will make possible the company to use it for realization of short- and long-term goals to improve their economic condition and strengthen the market position in the competitive environment.Предложена технологическая схема для комплексного дифференцированного извлечения благородных и цветных металлов из многокомпонентного электронного лома c целью улучшения экономического состояния предприятия вторичной металлургии. Представлены преимущества новой технологии и результаты извлечения. Приведены показатели прибыли, получаемые в результате внедрения технологии, c учетом снижения себестоимости золота как основного продукта при попутном извлечении других ценных компонентов. Рассчитан коэффициент эффективности комплексного извлечения цветных и благородных металлов по формуле: K = Доход / Затраты. Проанализировано влияние на прибыль увеличения закупочных цен. Установлено, что уменьшение прибыли на 1 т лома при повышении закупочной цены до 100 % за содержание драгоценных металлов по курсу Центрального банка РФ составило от 0,01 до 0,05 %. Следовательно, существует возможность значительного роста закупочной цены на сырье по сравнению с равновесными ценами рынка. Исследована зависимость годовой прибыли от увеличения производительности для разных категорий лома. Даны рекомендации, на какие именно составы целесообразно повышать закупочные цены. Показано, что возможна реализация управленческого воздействия на объем поставок сырья c помощью стратегии ценообразования. Рост цен на определенные виды лома будет способствовать привлечению поставщиков, увеличению объема производства, расширению ассортимента и получению дополнительной прибыли. Внедрение предлагаемой технологической схемы для комплексного извлечения ценных компонентов из электронного лома и применение стратегии повышения закупочных цен на сырье как специфической стратегии для приобретения необходимых ресурсов и их распределения позволят улучшить показатели экономической эффективности хозяйственной деятельности. Увеличение получаемой прибыли даст возможность предприятию использовать ее для реализации краткосрочных и долгосрочных целей по улучшению своего экономического состояния и укреплению рыночной позиции в условиях конкуренции

Single hadron response measurement and calorimeter jet energy scale uncertainty with the ATLAS detector at the LHC

The uncertainty on the calorimeter energy response to jets of particles is derived for the ATLAS experiment at the Large Hadron Collider (LHC). First, the calorimeter response to single isolated charged hadrons is measured and compared to the Monte Carlo simulation using proton-proton collisions at centre-of-mass energies of sqrt(s) = 900 GeV and 7 TeV collected during 2009 and 2010. Then, using the decay of K_s and Lambda particles, the calorimeter response to specific types of particles (positively and negatively charged pions, protons, and anti-protons) is measured and compared to the Monte Carlo predictions. Finally, the jet energy scale uncertainty is determined by propagating the response uncertainty for single charged and neutral particles to jets. The response uncertainty is 2-5% for central isolated hadrons and 1-3% for the final calorimeter jet energy scale.Comment: 24 pages plus author list (36 pages total), 23 figures, 1 table, submitted to European Physical Journal

Standalone vertex finding in the ATLAS muon spectrometer

A dedicated reconstruction algorithm to find decay vertices in the ATLAS muon spectrometer is presented. The algorithm searches the region just upstream of or inside the muon spectrometer volume for multi-particle vertices that originate from the decay of particles with long decay paths. The performance of the algorithm is evaluated using both a sample of simulated Higgs boson events, in which the Higgs boson decays to long-lived neutral particles that in turn decay to bbar b final states, and pp collision data at √s = 7 TeV collected with the ATLAS detector at the LHC during 2011