2,719 research outputs found
Test beam studies of the TRD prototype filled with different gas mixtures based on Xe, Kr, and Ar
Towards the end of LHC Run1, gas leaks were observed in some parts of the
Transition Radiation Tracker (TRT) of ATLAS. Due to these leaks, primary Xenon
based gas mixture was replaced with Argon based mixture in various parts.
Test-beam studies with a dedicated Transition Radiation Detector (TRD)
prototype were carried out in 2015 in order to understand transition radiation
performance with mixtures based on Argon and Krypton. We present and discuss
the results of these test-beam studies with different active gas compositions.Comment: 5 pages,12 figures, The 2nd International Conference on Particle
Physics and Astrophysics (ICPPA-2016); Acknowledgments section correcte
Some results of test beam studies of Transition Radiation Detector prototypes at CERN
Operating conditions and challenging demands of present and future
accelerator experiments result in new requirements on detector systems. There
are many ongoing activities aimed to develop new technologies and to improve
the properties of detectors based on existing technologies. Our work is
dedicated to development of Transition Radiation Detectors (TRD) suitable for
different applications. In this paper results obtained in beam tests at SPS
accelerator at CERN with the TRD prototype based on straw technology are
presented. TRD performance was studied as a function of thickness of the
transition radiation radiator and working gas mixture pressure
Проблемы и перспективы подготовки специалистов для предприятий ядерно-топливного комплекса Украины
Abstract. Purpose: To open problematics and to propose ways of development of production, scientific and educational spheres that providing nuclear-and-fuel power industry of Ukraine. Methods: The current state of uranium, zirconium and accompanying enterprises and also preparation of workers, engineering and highly-qualified personnel according to implementation of the State target economic program “Uranium of Ukraine” is analyzed. Findings: Problematics in development of production, scientific and educational spheres on the way of creation of closed nuclear-and-fuel cycle in Ukraine is analyzed. Originality: Creation of administrative-and-pedagogic, scientific-research inter-industry collective that will be capable to successful solution of production, scientific and educational problems in structural divisions of nuclear-and-fuel cycle of Ukraine. Practical implications: The foundation of creation of corporate educational institution of power orientations in Ukraine which systemically solves priorities in production, scientific and educational spheres of nuclear-and-fuel cycle is laid
Analysis of nucleus-nucleus collisions at high energies and Random Matrix Theory
We propose a novel statistical approach to the analysis of experimental data
obtained in nucleus-nucleus collisions at high energies which borrows from
methods developed within the context of Random Matrix Theory. It is applied to
the detection of correlations in momentum distributions of emitted particles.
We find good agreement between the results obtained in this way and a standard
analysis based on the method of effective mass spectra and two-pair correlation
function often used in high energy physics. The method introduced here is free
from unwanted background contributions.Comment: 11 pages, 10 figure
DROP MOTION DURING MASS TRANSFER ACCOMPANIED BY INTERPHASE CONVECTION
Received: 04.11.2021. Revised: 16.06.2022. Accepted: 16.06.2022. Available online: 22.06.2022.The article deals with the experimental study of the mass transfer of acetic acid from the dispersed phase (butyl acetate) to the continuous phase (water). The experiments were carried out on a laboratory column with single floating drops. The presence of the Marangoni effect during the movement of drops and its influence on the trajectories of movement of drops and the kinetics of mass transfer during extraction are shown. The influence of the Marangoni effect is most clearly observed when the driving force of the process is 0.1...0.2 mol/l
Demonstration of variable angle super-heterodyne dynamic light scattering for measuring colloidal dynamics
Identification of particles with Lorentz factor up to with Transition Radiation Detectors based on micro-strip silicon detectors
This work is dedicated to the study of a technique for hadron identification
in the TeV momentum range, based on the simultaneous measurement of the
energies and of the emission angles of the Transition Radiation (TR) X-rays
with respect to the radiating particles. A detector setup has been built and
tested with particles in a wide range of Lorentz factors (from about to
about crossing different types of radiators. The measured
double-differential (in energy and angle) spectra of the TR photons are in a
reasonably good agreement with TR simulation predictions.Comment: 31 pages, 12 figures, paper published on Nuclear Instruments &
Methods
Method for measuring the hadron-proton scattering cross-section in the coulomb interference region
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