Determination of the primary energy using an ultrathin calorimeter

Dmitrieva, Elena; Fedosimova, Anastasiya; Lebedev, Igor; Temiraliev, Abzal; Abishev, Medeu; Kozhamkulov, T.A.; Mayorov, A. G.; Spitaleri, C.

doi:10.1088/1361-6471/ab67e7

Cited by 6 publications

(4 citation statements)

References 18 publications

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“…This, in turn, requires appropriate calculations of the parameters of building materials, as this has an impact on the strength of the structure. 34,35 The scientists' conclusions are confirmed by the experimental data, which were obtained in this research.…”

Section: Discussionsupporting

confidence: 79%

“…According to scientists, the need to meet the requirements of this kind challenges the industry to increase the efficiency of the materials used and optimize their use in modern building structures. This, in turn, requires appropriate calculations of the parameters of building materials, as this has an impact on the strength of the structure 34,35 . The scientists' conclusions are confirmed by the experimental data, which were obtained in this research.…”

Section: Discussionsupporting

confidence: 72%

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Comparison of experimental and calculated thermal transmittance for timber‐framed outer wall constructions

Gendelis

2023

Heat Trans

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The importance of accurately determining the thermal transmittance factor for the outer walls of timber‐framed buildings is the driving force behind this research. This calculation is necessary for heating and cooling load determination, as well as energy consumption assessment. This research aims to conduct an analytical comparison, through both experimental and calculated means, of thermal conductivity coefficients of materials employed in the construction of buildings and structures. The methodological approach adopted in this research is grounded on an experimental analysis of the thermal transmittance of the outer wall materials in timber‐framed buildings. Thermal conductivity measurements with a Hot Plate apparatus by ISO 8302 and thermal conductivity calculations using mathematical software were the primary experimental methods deployed during the research. The results of this study demonstrate differences between experimental and calculated thermal transmittance values for timber‐framed outer walls. Moisture inconsistent distribution throughout the material is the reason behind these discrepancies, calling for particular humidity corrections in the calculations, varying across different materials. While working with simplified calculations of timber‐framed outer wall structures, monitoring the uneven heat flow in I‐beam joints is paramount and should be coupled with humidity‐related material changes. This study's practical implications are that the results can be implemented when calculating the energy consumption of building structures and the heating‐cooling load they entail.

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Section: Discussionsupporting

confidence: 79%

Section: Discussionsupporting

confidence: 72%

Comparison of experimental and calculated thermal transmittance for timber‐framed outer wall constructions

Gendelis

2023

Heat Trans

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“…The strongest fluctuations from layer to layer are at the beginning of the development of the cascade. This makes the analysis very difficult [20].…”

Section: Primary Energy Measurement With a Calorimetermentioning

confidence: 99%

Direct Measurements of Cosmic Rays (TeV and beyond) Using an Ultrathin Calorimeter: Lessening Fluctuation Method

et al. 2021

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In this paper, we propose a method that makes it possible to use an ultrathin calorimeter for direct measurements of cosmic rays with energies of TeV and higher. The problems of determining the primary energy with a thin calorimeter, due to large fluctuations in shower development, the low statistics of analyzed events and the large size required for the calorimeter, are considered in detail. A solution to these problems is proposed on the basis of a lessening fluctuation method. This method is based on the assumption of the universality of the development of cascades initiated by particles of the same energy and mass. For energy reconstruction, so-called correlation curves are used. The main analyzed quantities are the size of the cascade and the rate of its development. The method was tested using the calorimeter of the PAMELA collaboration. Based on simulations, it is shown that the primary energy can be determined on the ascending branch of the cascade curve. This fact solves the problems associated with the need to increase the calorimeter thickness with an increase in primary energy and with the limitation of the analyzed events. The proposed technique is universal for different energies and different nuclei.

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“…Therefore, to evaluate the geometry of the collision, the accelerator experiment with the fixed target has advantages [21,22]. The fixed target mode also allows us to study rare processes and measure the parameters needed to analyze cosmic ray data [23][24][25].…”

Section: Introductionmentioning

confidence: 99%

Fluctuations of Initial State and Event-by-Event Pseudo-Rapidity Correlations in High Energy Nuclear Collisions

et al. 2022

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The initial state, about which there is usually very little direct experimental information, leads to significant fluctuations in the distribution of secondary particles and fragments. In this paper, to estimate the initial state the fragmentation parameters of interacting nuclei are analyzed. To investigate the correlations, the Hurst method is used. A detailed study of event-by-event pseudo-rapidity correlations in terms of the Hurst index, multiplicity of secondary particles and target dependence has been carried out for heavy (AgBr) and light (HCNO) targets present in the nuclear emulsion (NIKFI BR-2) using Au-197 projectiles at 10.6 A GeV. Evidences of short-range particle correlations and cluster formation in the pseudo-rapidity space are found from our analysis. The total ensemble of events has been divided into four classes depending on the behavior of Hurst index: uncorrelated, with short-range correlations, with long-range correlations and mixed. Events of various types differ significantly in the multiplicity of secondary particles, fragmentation of the projectile nucleus, and have significant differences in the pseudo-rapidity distribution of secondary particles.

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Determination of the primary energy using an ultrathin calorimeter

Cited by 6 publications

References 18 publications

Comparison of experimental and calculated thermal transmittance for timber‐framed outer wall constructions

Comparison of experimental and calculated thermal transmittance for timber‐framed outer wall constructions

Direct Measurements of Cosmic Rays (TeV and beyond) Using an Ultrathin Calorimeter: Lessening Fluctuation Method

Fluctuations of Initial State and Event-by-Event Pseudo-Rapidity Correlations in High Energy Nuclear Collisions

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