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Metadata extraction from raw astroparticle data of TAIGA experiment

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arXiv 2019年

作者： Bychkov, Igor Dubenskaya, Julia Korosteleva, Elena Kryukov, Alexandr Mikhailov, Andrey Nguyen, Minh-Duc Shigarov, Alexey Matrosov Institute for System Dynamics and Control Theory Siberian Branch of Russian Academy of Sciences Lermontov St. 134 Irkutsk Russia Moscow Russia Institute of Mathematics Economics and Informatics Irkutsk State University Gagarin Blvd. 20 Irkutsk Russia

Today, the operating TAIGA (Tunka Advanced Instrument for cosmic rays and Gamma Astronomy) experiment continuously produces and accumulates a large volume of raw astroparticle data. To be available for the scientific community these data should be well-described and formally characterized. The use of metadata makes it possible to search for and to aggregate digital objects (e.g. events and runs) by time and equipment through a unified interface to access them. The important part of the metadata is hidden and scattered in folder/files names and package headers. Such metadata should be extracted from binary files, transformed to a unified form of digital objects, and loaded into the catalog. To address this challenge we developed a concept of the metadata extractor that can be extended by facility-specific extraction modules. It is designed to automatically collect descriptive metadata from raw data files of all TAIGA formats. Copyright © 2019, The Authors. All rights reserved.

关键词： Metadata

Periodic solutions of a phase-field model with hysteresis

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arXiv 2020年

作者： Bin, Chen Timoshin, Sergey A. Fujian Province University Key Laboratory of Computational Science School of Mathematical Sciences Huaqiao University Quanzhou362021 China Fujian Province University Key Laboratory of Computational Science School of Mathematical Sciences Huaqiao University Quanzhou362021 China Matrosov Institute for System Dynamics and Control Theory Russian Academy of Sciences Lermontov str. 134 Irkutsk664033 Russia

In the present paper we consider a partial differential system describing a phase-field model with temperature dependent constraint for the order parameter. The system consists of an energy balance equation with a fairly general nonlinear heat source term and a phase dynamics equation which takes into account the hysteretic character of the process. The existence of a periodic solution for this system is proved under a minimal set of assumptions on the curves defining the corresponding hysteresis region. Copyright © 2020, The Authors. All rights reserved.

关键词： Hysteresis

Towards the baikal open laboratory in astroparticle physics

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arXiv 2019年

作者： Bezyazeekov, Pavel Bychkov, Igor Budnev, Nikolay Chernykh, Daria Kazarina, Yulia Kostunin, Dmitriy Kryukov, Alexander Monkhoev, Roman Shigarov, Alexey Shipilov, Dmitriy Applied Physics Institute Irkutsk State University Irkutsk Russia Matrosov Institute for System Dynamics and Control Theory Siberian Branch of Russian Academy of Sciences Irkutsk Russia DESY Zeuthen Germany Lomonosov Moscow State University Skobeltsyn Institute of Nuclear Physics Moscow Russia

The open science framework defined in the German-Russian Astroparticle Data Life Cycle Initiative (GRADLCI) has triggered educational and outreach activities at the irkutsk State University (ISU), which is actively participated in the two major astroparticle facilities in the region: TAIGA observatory and Baikal-GVD neutrino telescope. We describe the ideas grew out of this unique environment and propose a new open science laboratory based on education and outreach as well as on the development and testing new methods and techniques for the multimessenger astronomy. Copyright © 2019, The Authors. All rights reserved.

关键词： Observatories

Lepton phenomenology of Stueckelberg portal to dark sector

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arXiv 2021年

作者： Kachanovich, Aliaksei Kovalenko, Sergey Kuleshov, Serguei Lyubovitskij, Valery E. Zhevlakov, Alexey S. Wolfgang-Gaede-Straße 1 Karlsruhe76131 Germany Ruder Boskovic Institute Bijenicka cesta 54 Zagreb10000 Croatia Departamento de Ciencias Físicas Universidad Andres Bello Sazié 2212 Piso 7 Santiago Chile of ANID Fernández Concha 700 Santiago Chile Centro Científico Tecnológico de Valparaíso-CCTVal Universidad Técnica Federico Santa María Casilla 110-V Valparaíso Chile Bogoliubov Laboratory of Theoretical Physics JINR Dubna141980 Russia Institut für Theoretische Physik Universität Tübingen Kepler Center for Astro and Particle Physics Auf der Morgenstelle 14 TübingenD-72076 Germany Matrosov Institute for System Dynamics and Control Theory SB RAS Lermontov str. 134 Irkutsk664033 Russia

We propose an extension of the Standard Model (SM) with a UA′(1) gauge invariant dark dector connected to the SM via a new portal — the Stueckelberg portal, arising in the framework of dark photon A′ mass generation via Stueckelberg mechanism. This portal opens through the effective dim=5 operators constructed from the covariant term of the auxiliary Stueckelberg scalar field σ providing flavor non-diagonal renormalizable couplings of both σ and A′ to the SM fermions ψ. The Stueckelberg scalar plays a role of Goldstone boson in the generation of mass of the Dark Photon. Contrary to the conventional kinetic mixing portal, in our scenario flavor diagonal A′ψ couplings are not proportional to the fermion charges and are, in general, flavor nondiagonal. These features drastically change the phenomenology of dark photon A′ relaxing or avoiding some previously established experimental constraints. We focus on the phenomenology of the described scenario of the Stueckelberg portal in the lepton sector and analyze the contribution of the dark sector fields A′ to the anomalous magnetic moment of muon (g−2)µ, lepton flavor violating decays li → lkγ and µ−e conversion in nuclei. We obtain limits on the model parameters from the existing data on the corresponding observables. © 2021, CC BY.

关键词： Fermions

Justification of the reliability and survivability properties of complex mechanical systems based on the self-organization principle

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AIP Conference Proceedings 2020年第1期2315卷

作者： A. F. Berman Matrosov Institute for System Dynamics and Control Theory Siberian Branch of the Russian Academy of Sciences 134 Lermontova St. Irkutsk 664033 Russia

This paper considers further development of the method for pre-design studies aimed at improving the reliability, survivability, and safety of complex mechanical systems, assembly units, and parts in accordance with the criteria of strength and resource. The Self-Organization Principle is represented as a combination of a heuristic hierarchical transdisciplinary model and metaheuristic and heuristic rules that automatically create a decision algorithm. The algorithm is determined by the object of study, by the chosen goal, and by the scientific and industrial description of the tasks. The representation of tasks as metaheuristics and heuristics allows for the use of methods and means for artificial intelligence, in particular, expert systems. Metaheuristics and heuristics are compiled by domain experts with further incorporation into the knowledge bases of the corresponding hierarchical complex of Expert systems and Computational Modules.

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Using the Beth-Uhlenbeck approach to describe the kaon to pion ratio in a 2+1 flavor PNJL model

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arXiv 2019年

作者： Blaschke, D. Friesen, A. Kalinovsky, Yu. Radzhabov, A. Institute for Theoretical Physics University of Wroclaw Wroclaw50-204 Poland Joint Institute for Nuclear Research Dubna Dubna141980 Russia Moscow115409 Russia Matrosov Institute for System Dynamics and Control Theory Irkutsk664033 Russia Irkutsk State University Irkutsk664003 Russia

The kaon to pion ratios are discussed in the framework of a 2+1 flavor PNJL model. In order to interpret the behaviour of bound states in medium the Beth-Uhlenbeck approach is used. It is shown that in terms of phase shifts in the K+ channel an additional low-energy mode could appear as a bound state in medium since the masses of the quark constituents are different. The comparison with experimental data for the ratios is performed and the influence of the anomalous mode to the "horn" effect in the K+/π+ ratio is discussed. Copyright © 2019, The Authors. All rights reserved.

关键词： Hadrons

A distributed data warehouse system for astroparticle physics 8

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A distributed data warehouse system for astroparticle physic...

Selected Papers of the 8th International Conference "Distributed Computing and Grid-Technologies in Science and Education", GRID 2018

作者： Nguyen, Minh-Duc Kryukov, Alexander Dubenskaya, Julia Korosteleva, Elena Polyakov, Stanislav Postnikov, Evgeny Bychkov, Igor Mikhailov, Andrey Shigarov, Alexey Fedorov, Oleg Kazarina, Yulia Shipilov, Dmitry Zhurov, Dmitry Lomonosov Moscow State University Skobeltsyn Institute of Nuclear Physics Moscow Russia Matrosov Institute for System Dynamics and Control Theory Siberian Branch of Russian Academy of Sciences Irkutsk Russia Applied Physics Institute Irkutsk State University Irkutsk Russia

A distributed data warehouse system is one of the actual issues in the field of astroparticle physics. Famous experiments, such as TAIGA, KASCADE-Grande, produce tens of terabytes of data measured by their instruments. It is critical to have a smart data warehouse system on-site to store the collected data for further distribution effectively. It is also vital to provide scientists with a handy and user-friendly interface to access the collected data with proper permissions not only on-site but also online. The latter case is handy when scientists need to combine data from different experiments for analysis. In this work, we describe an approach to implementing a distributed data warehouse system that allows scientists to acquire just the necessary data from different experiments via the Internet on demand. The implementation is based on CemVM-FS with additional components developed by us to search through the whole available data sets and deliver their subsets to users' computers. © 2018 Minh-Duc Nguyen, Alexander Kryukov, Julia Dubenskaya, Elena Korosteleva, Stanislav Polyakov, Evgeny Postnikov, Igor Bychkov, Andrey Mikhailov, Alexey Shigarov, Oleg Fedorov, Yulia Kazarina, Dmitry Shipilov, Dmitry Zhurov.

关键词： Data warehouses

Application of HUBzero platform for the educational process in astroparticle physics 8

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Application of HUBzero platform for the educational process ...

Selected Papers of the 8th International Conference "Distributed Computing and Grid-Technologies in Science and Education", GRID 2018

作者： Kazarina, Yulia Bychkov, Igor Kryukov, Alexander Dubenskaya, Julia Korosteleva, Elena Nguyen, Minh-Duc Polyakov, Stanislav Postnikov, Evgeny Mikhailov, Andrey Shigarov, Alexey Fedorov, Oleg Shipilov, Dmitry Zhurov, Dmitry Applied Physics Institute Irkutsk State University Irkutsk Russia Matrosov Institute for System Dynamics and Control Theory Siberian Branch of Russian Academy of Sciences Irkutsk Russia Lomonosov Moscow State University Skobeltsyn Institute of Nuclear Physics Moscow Russia

In the frame of the Karlsruhe-Russian Astroparticle Data Life Cycle Initiative it was proposed to deploy an educational resource *** for the training of students in the field of astroparticle physics. This resource is based on HUBzero, which is an open-source software platform for building powerful websites, which supports scientific discovery, learning, and collaboration. HUBzero has been deployed on the servers of matrosov institute for system dynamics and control theory. The educational resource *** is being filled with the information covering cosmic messengers, astroparticle physics experiments and educational courses and schools on astroparticle physics. Furthermore, the educational resource *** can be used for online collaboration. We present the current status of this project and our first experience of application of this service as a collaboration framework. © 2018 Yulia Kazarina, Igor Bychkov, Alexander Kryukov, Julia Dubenskaya, Elena Korosteleva, Dmitriy Kostunin, Minh-Duc Nguyen, Stanislav Polyakov, Evgeny Postnikov, Andrey Mikhailov, Alexey Shigarov, Oleg Fedorov, Dmitry Shipilov, Dmitry Zhurov.

关键词： Open source software

Distributed data storage for modern astroparticle physics experiments

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arXiv 2019年

作者： Kryukov, Alexander Nguyen, Minh-Duc Bychkov, Igor Mikhailov, Andrey Shigarov, Alexey Dubenskaya, Julia Skobeltsyn Institute of Nuclear Physics Lomonosov Moscow State University Moscow119992 Russia Matrosov Institute for System Dynamics and Control Theory Siberian Branch of Russian Academy of Sciences Lermontov st. 134 Irkutsk Russia

The German-Russian Astroparticle Data Life Cycle Initiative is an international project launched in 2018. The Initiative aims to develop technologies that provide a unified approach to data management, as well as to demonstrate their applicability on the example of two large astrophysical experiments - KASCADE and TAIGA. One of the key points of the project is the development of a distributed storage, which, on the one hand, will allow data of several experiments to be combined into a single repository with unified interface, and on the other hand, will provide data to all participants of experimental groups for multi-messenger analysis. Our approach to storage design is based on the single write-multiple read (SWMR) model for accessing raw or centrally processed data for further analysis. The main feature of the distributed storage is the ability to extract data either as a collection of files or as aggregated events from different sources. In the last case the storage provides users with a special service that aggregates data from different storages into a single sample. Thanks to this feature, multi-messenger methods used for more sophisticated data exploration can be applied. Users can use bothWeb-interface and Application Programming Interface (API) for accessing the storage. In this paper we describe the architecture of a distributed data storage for astroparticle physics and discuss the current status of our work. Copyright © 2019, The Authors. All rights reserved.

关键词： Application programming interfaces (API)