The Unified Database for BM@N experiment data handling

The article describes the developed Unified Database designed as a comprehensive relational data storage for the BM@N experiment at the Joint Institute for Nuclear Research in Dubna. The BM@N experiment, which is one of the main elements of the first stage of the NICA project, is a fixed target experiment at extracted Nuclotron beams of the Laboratory of High Energy Physics (LHEP JINR). The structure and purposes of the BM@N setup are briefly presented. The article considers the scheme of the Unified Database, its attributes and implemented features in detail. The use of the developed BM@N database provides correct multi-user access to actual information of the experiment for data processing. It stores information on the experiment runs, detectors and their geometries, different configuration, calibration and algorithm parameters used in offline data processing. An important part of any database - user interfaces are presented.

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Status of NICA

EPJ Web of Conferences ◽

10.1051/epjconf/201818202063 ◽

2018 ◽

Vol 182 ◽

pp. 02063 ◽

Cited By ~ 1

Author(s):

Vladimir Kekelidze ◽

Alexander Kovalenko ◽

Richard Lednicky ◽

Victor Matveev ◽

Igor Meshkov ◽

...

Keyword(s):

High Energy Physics ◽

Nuclear Research ◽

High Energy ◽

Design Stage ◽

Target Area ◽

Baryonic Matter ◽

Accelerator Facility ◽

Polarized Protons ◽

The Status ◽

Under Construction

The NICA (Nuclotron-based Ion Collider fAcility) is the new international research facility under construction at the Joint Institute for Nuclear Research (JINR) in Dubna. The main targets of the facility are the following: 1) study of hot and dense baryonic matter at the energy range of the maximum baryonic density; 2) investigation of nucleon spin structure and polarization phenomena; 3) development of JINR accelerator facility for high energy physics research based on the new collider of relativistic ions from protons to gold and polarized protons and deuterons as well with the maximum collision energy of sqrt(sNN) ~11GeV (Au79+ +Au79+) and ~ 27 GeV (p+p). Two collider detector setups MPD and SPD are foreseen. The setup BM@N (Baryonic Matter at Nuclotron) is commissioned for data taken at the existing Nuclotron beam fixed target area. The MPD construction is in progress whereas the SPD is still at the beginning design stage. An average luminosity of the collider is expected at the level of 1027 cm-2 s-1 for Au (79+) and 1032 cm-2 s-1 for polarized protons at 27 GeV. The status of NICA design and construction work is briefly described below.

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Striped Data Analysis Framework

EPJ Web of Conferences ◽

10.1051/epjconf/202024506042 ◽

2020 ◽

Vol 245 ◽

pp. 06042

Author(s):

Oliver Gutsche ◽

Igor Mandrichenko

Keyword(s):

Data Analysis ◽

Data Storage ◽

High Energy Physics ◽

Data Access ◽

High Energy ◽

Data Representation ◽

General Idea ◽

Common Data Model ◽

Local File ◽

Energy Physics

A columnar data representation is known to be an efficient way for data storage, specifically in cases when the analysis is often done based only on a small fragment of the available data structures. A data representation like Apache Parquet is a step forward from a columnar representation, which splits data horizontally to allow for easy parallelization of data analysis. Based on the general idea of columnar data storage, working on the [LDRD Project], we have developed a striped data representation, which, we believe, is better suited to the needs of High Energy Physics data analysis. A traditional columnar approach allows for efficient data analysis of complex structures. While keeping all the benefits of columnar data representations, the striped mechanism goes further by enabling easy parallelization of computations without requiring special hardware. We will present an implementation and some performance characteristics of such a data representation mechanism using a distributed no-SQL database or a local file system, unified under the same API and data representation model. The representation is efficient and at the same time simple so that it allows for a common data model and APIs for wide range of underlying storage mechanisms such as distributed no-SQL databases and local file systems. Striped storage adopts Numpy arrays as its basic data representation format, which makes it easy and efficient to use in Python applications. The Striped Data Server is a web service, which allows to hide the server implementation details from the end user, easily exposes data to WAN users, and allows to utilize well known and developed data caching solutions to further increase data access efficiency. We are considering the Striped Data Server as the core of an enterprise scale data analysis platform for High Energy Physics and similar areas of data processing. We have been testing this architecture with a 2TB dataset from a CMS dark matter search and plan to expand it to multiple 100 TB or even PB scale. We will present the striped format, Striped Data Server architecture and performance test results.

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Interactions of Beams with Surroundings

Particle Physics Reference Library ◽

10.1007/978-3-030-34245-6_5 ◽

2020 ◽

pp. 183-203

Author(s):

M. Brugger ◽

H. Burkhardt ◽

B. Goddard ◽

F. Cerutti ◽

R. G. Alia

Keyword(s):

High Energy Physics ◽

High Energy ◽

Fixed Target ◽

Fixed Target Experiments ◽

Secondary Particles ◽

Radiation Sources ◽

Residual Gas ◽

The Impact ◽

High Energy Particles ◽

Energy Physics

AbstractWith the exceptions of Synchrotron Radiation sources, beams of accelerated particles are generally designed to interact either with one another (in the case of colliders) or with a specific target (for the operation of Fixed Target experiments, the production of secondary beams and for medical applications). However, in addition to the desired interactions there are unwanted interactions of the high energy particles which can produce undesirable side effects. These interactions can arise from the unavoidable presence of residual gas in the accelerator vacuum chamber, or from the impact of particles lost from the beam on aperture limits around the accelerator, as well as the final beam dump. The wanted collisions of the beams in a collider to produce potentially interesting High Energy Physics events also reduces the density of the circulating beam and can produce high fluxes of secondary particles.

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Very light tracking detector for jet target experiment in high energy physics

IEEE Transactions on Nuclear Science ◽

10.1109/23.34400 ◽

1989 ◽

Vol 36 (1) ◽

pp. 54-57 ◽

Cited By ~ 7

Author(s):

R. Calabrese ◽

V. Carassiti ◽

P. Dalpiaz ◽

P.F. Dalpaiz ◽

E. Luppi ◽

...

Keyword(s):

High Energy Physics ◽

High Energy ◽

Tracking Detector ◽

Target Experiment ◽

Energy Physics

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Exascale Data Processing in Heterogeneous Distributed Computing Infrastructure for Applications in High Energy Physics

Physics of Particles and Nuclei ◽

10.1134/s1063779620060052 ◽

2020 ◽

Vol 51 (6) ◽

pp. 995-1068

Author(s):

A. A. Klimentov

Keyword(s):

Distributed Computing ◽

Data Processing ◽

High Energy Physics ◽

High Energy ◽

Heterogeneous Distributed Computing ◽

Distributed Computing Infrastructure ◽

Computing Infrastructure ◽

Energy Physics

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The BmnRoot framework for experimental data processing in the BM@N experiment at NICA

EPJ Web of Conferences ◽

10.1051/epjconf/201921405027 ◽

2019 ◽

Vol 214 ◽

pp. 05027 ◽

Cited By ~ 1

Author(s):

Pavel Batyuk ◽

Konstantin Gertsenberger ◽

Sergey Merts ◽

Oleg Rogachevsky

Keyword(s):

Nuclear Physics ◽

Nuclear Research ◽

Information Support ◽

Fixed Target ◽

Experimental Data Processing ◽

Multiparticle Interaction ◽

Physics Program ◽

Target Experiment ◽

Under Construction ◽

New Generation

A new generation of experiments for the relativistic nuclear physics is expected to be started up in the nearest years at the Nuclotron-based Ion Collider fAcility (NICA) under construction at the Joint Institute for Nuclear Research in Dubna. The main part of the facility is the essentially modernized accelerator Nuclotron. BM@N (Baryonic Matter at Nuclotron) is considered as a first stage towards realization of physics program available at NICA. It is a fixed target experiment aimed to work with the Nuclotron extracted beams of different species. The experiment had a set of technical runs since 2015. For a successful realization of the BM@N physics program, a well developed and tested software for simulation, digitization, reconstruction and analysis of collision events and other additional tasks is of utmost importance. The BmnRoot software developed in order to operate the mentioned tasks is described in this article. It includes modules for data digitizing obtained from BM@N detector systems, realistic simulation of signals in detectors, alignment of detectors, reconstruction of multiparticle interaction events, as well as all necessary systems for maintaining the databases of the experiment, visualization and providing information support for the experiment.

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Status of the NICA project at JINR

EPJ Web of Conferences ◽

10.1051/epjconf/201819101003 ◽

2018 ◽

Vol 191 ◽

pp. 01003 ◽

Cited By ~ 1

Author(s):

Alexander Kovalenko ◽

Vladimir Kekelidze ◽

Richard Lednicky ◽

Viktor Matveev ◽

Igor Meshkov ◽

...

Keyword(s):

High Energy Physics ◽

Nuclear Research ◽

High Energy ◽

Design Stage ◽

Target Area ◽

Baryonic Matter ◽

Accelerator Facility ◽

Polarized Protons ◽

The Status ◽

Under Construction

The NICA (Nuclotron-based Ion Collider fAcility) is the new international research facility under construction at the Joint Institute for Nuclear Research (JINR) in Dubna. The main targets of the facility are the following: 1) study of hot and dense baryonic matter at the energy range of the maximum baryonic density; 2) investigation of nucleon spin structure and polarization phenomena; 3) development of JINR accelerator facility for high energy physics research based on the new collider of relativistic ions from protons to gold and polarized protons and deuterons as well with the maximum collision energy of √SNN ~11GeV (Au79+ +Au79+) and ~ 27 GeV (p+p). Two collider detector setups MPD and SPD are foreseen. The setup BM@N (Baryonic Matter at Nuclotron) is commissioned for data taken at the existing Nuclotron beam fixed target area. The MPD construction is in progress whereas the SPD is still at the beginning design stage. An average luminosity of the collider is expected at the level of 1027 cm-2 s-1 for Au79+ and 1032 cm-2 s-1 for polarized protons at 27 GeV. The status of NICA design and construction work is briefly described below.

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Influence of Backside Energy Leakages from Hadronic Calorimeters on Fluctuation Measures in Relativistic Heavy-Ion Collisions

Universe ◽

10.3390/universe5050126 ◽

2019 ◽

Vol 5 (5) ◽

pp. 126

Author(s):

Andrey Seryakov

Keyword(s):

High Energy Physics ◽

System Size ◽

Heavy Ion ◽

High Energy ◽

Relativistic Heavy Ion Collisions ◽

Research Subject ◽

Fixed Target ◽

Main Research ◽

Ion Collisions ◽

Energy Physics

The phase diagram of the strongly interacting matter is the main research subject for different current and future experiments in high-energy physics. System size and energy scan programs aim to find a possible critical point. One of such programs was accomplished by the fixed-target NA61/SHINE experiment in 2018. It includes six beam energies and six colliding systems: p + p, Be + Be, Ar + Sc, Xe + La, Pb + Pb and p + Pb. In this study, we discuss how the efficiency of centrality selection by forward spectators influences multiplicity and fluctuation measures and how this influence depends on the size of colliding systems. We use SHIELD and EPOS Monte-Carlo (MC) generators along with the wounded nucleon model, introduce a probability to lose a forward spectator and spectator energy loss. We show that for light colliding systems such as Be or Li even a small inefficiency in centrality selection has a dramatic impact on multiplicity scaled variance. Conversely, heavy systems such as Ar + Sc are much less prone to the effect.

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