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Centrality Determination Method in Nuclear Collisions by Using Hadron Calorimeter 利用强子量热计确定核碰撞中的中心性方法
IF 0.4
Physics of Particles and Nuclei Letters Pub Date : 2024-08-14 DOI: 10.1134/S1547477124700845
D. Idrisov, I. Segal, O. Golosov, A. Taranenko
{"title":"Centrality Determination Method in Nuclear Collisions by Using Hadron Calorimeter","authors":"D. Idrisov,&nbsp;I. Segal,&nbsp;O. Golosov,&nbsp;A. Taranenko","doi":"10.1134/S1547477124700845","DOIUrl":"10.1134/S1547477124700845","url":null,"abstract":"<p>Determining centrality is an important task because it allows estimating the size of the collision system in relativistic heavy ion collisions. It provides a tool for comparison of the results from upcoming measurements with the Multi-Purpose Detector (MPD) at NICA with data from other experiments and theoretical model calculations. In this work, a new procedure for centrality determination based on the energy of spectator fragments has been proposed. The validity of the procedure has been checked using the published data from the NA61/SHINE experiment for Pb + Pb collisions at beam momentum <i>p</i><sub>beam</sub> = 13 A GeV/<i>c</i> (<span>(sqrt {{{s}_{{NN}}}} )</span> = 5.2 GeV).</p>","PeriodicalId":730,"journal":{"name":"Physics of Particles and Nuclei Letters","volume":"21 4","pages":"627 - 630"},"PeriodicalIF":0.4,"publicationDate":"2024-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142411765","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Extraction Time Simulations of a Cryogenic Gas Stopping Cell Designed to Study the Properties of Superheavy Elements 为研究超重元素特性而设计的低温气体截留室的萃取时间模拟
IF 0.4
Physics of Particles and Nuclei Letters Pub Date : 2024-08-14 DOI: 10.1134/S1547477124701127
A. Kohoutova, A. M. Rodin, A. V. Gulyaev, A. V. Gulyaeva, V. Yu. Vedeneev, A. M. Abakumov, J. Kliman, A. B. Komarov, P. Kohout, L. Krupa, N. Yu. Kurkova, A. Maheer, A. S. Novoselov, A. Opichal, J. Pechousek, A. V. Podshibyakin, V. S. Salamatin, S. V. Stepantsov, E. V. Chernysheva, S. A. Yukhimchuk
{"title":"Extraction Time Simulations of a Cryogenic Gas Stopping Cell Designed to Study the Properties of Superheavy Elements","authors":"A. Kohoutova,&nbsp;A. M. Rodin,&nbsp;A. V. Gulyaev,&nbsp;A. V. Gulyaeva,&nbsp;V. Yu. Vedeneev,&nbsp;A. M. Abakumov,&nbsp;J. Kliman,&nbsp;A. B. Komarov,&nbsp;P. Kohout,&nbsp;L. Krupa,&nbsp;N. Yu. Kurkova,&nbsp;A. Maheer,&nbsp;A. S. Novoselov,&nbsp;A. Opichal,&nbsp;J. Pechousek,&nbsp;A. V. Podshibyakin,&nbsp;V. S. Salamatin,&nbsp;S. V. Stepantsov,&nbsp;E. V. Chernysheva,&nbsp;S. A. Yukhimchuk","doi":"10.1134/S1547477124701127","DOIUrl":"10.1134/S1547477124701127","url":null,"abstract":"<p>—New experimental setup for high-precision mass measurement of heavy and superheavy nuclei is being built in Flerov Laboratory of Nuclear Reactions (Dubna). It consists of target unit, gas filled separator of complete fusion products, cryogenic gas stopping cell (CGSC), a radiofrequency system for transporting and cooling a low-energy beam and a multi-reflection time-of-flight mass spectrometer. Simulations of stopping efficiency and extraction time from CGSC were performed for evaporation residues of the complete fusion reactions <sup>40</sup>Ar + <sup>144</sup>Sm → <sup>184–<i>x</i></sup>Hg + <i>xn</i>, <sup>40</sup>Ar + <sup>166</sup>Er → <sup>206–<i>x</i></sup>Rn + <i>xn</i>, <sup>48</sup>Ca + <sup>208</sup>Pb → <sup>256–<i>x</i></sup>No + <i>xn</i> and <sup>48</sup>Ca + <sup>242</sup>Pu → <sup>290–<i>x</i></sup>Fl + <i>xn</i>. Internal software based on SRIM and Geant4 was used in the simulations. Optimum parameters for the real experiment, namely, the width of entrance window, pressure of helium buffer-gas in CGSC and the choice of suitable reactions were the main motivation of these simulations.</p>","PeriodicalId":730,"journal":{"name":"Physics of Particles and Nuclei Letters","volume":"21 4","pages":"701 - 704"},"PeriodicalIF":0.4,"publicationDate":"2024-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142411661","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Development of Clustering Algorithm for Pixel Detectors for FPGA 开发用于 FPGA 的像素检测器聚类算法
IF 0.4
Physics of Particles and Nuclei Letters Pub Date : 2024-08-14 DOI: 10.1134/S1547477124701140
A. V. Lapkin, G. Lavrov, V. V. Makarova, R. V. Sotenskii, H. B. P. Truong
{"title":"Development of Clustering Algorithm for Pixel Detectors for FPGA","authors":"A. V. Lapkin,&nbsp;G. Lavrov,&nbsp;V. V. Makarova,&nbsp;R. V. Sotenskii,&nbsp;H. B. P. Truong","doi":"10.1134/S1547477124701140","DOIUrl":"10.1134/S1547477124701140","url":null,"abstract":"<p>Modern pixel particle detectors allow possibility to determine coordinates of hit with high accuracy. Some of them, for example Medipix series detectors, provide possibilities to evaluate particle energy deposit. However, pixel detectors have a difficult problem of a dividing of the charge, appeared by interaction with hitting particle, into neighbor pixels. To compensate this effect the clustering procedure is used. The clustering procedure is the process of union of neighbor non-zero pixels. A cluster is a group of pixels with common borders. Sum of energy deposit in pixels of a cluster provide estimation of particle energy with higher accuracy. The clustering procedure usually operates with ready data saved on a computer what required a long time and big amount of memory. Here the clustering algorithm for FPGA to include in DAQ systems of pixel detectors is presented. The including clustering procedure in DAQ reduces amount of memory and time required for data processing.</p>","PeriodicalId":730,"journal":{"name":"Physics of Particles and Nuclei Letters","volume":"21 4","pages":"708 - 710"},"PeriodicalIF":0.4,"publicationDate":"2024-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142176833","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Determination of the Photon Detection Efficiency, Time and Spatial Resolution of the Light Collecting System of the near Liquid Argon Detector (ND-LAr) of the DUNE Experiment 确定 DUNE 试验的近液态氩探测器（ND-LAr）光收集系统的光子探测效率、时间和空间分辨率
IF 0.4
Physics of Particles and Nuclei Letters Pub Date : 2024-08-14 DOI: 10.1134/S1547477124700870
P. I. Lenskii, A. V. Chukanov
{"title":"Determination of the Photon Detection Efficiency, Time and Spatial Resolution of the Light Collecting System of the near Liquid Argon Detector (ND-LAr) of the DUNE Experiment","authors":"P. I. Lenskii,&nbsp;A. V. Chukanov","doi":"10.1134/S1547477124700870","DOIUrl":"10.1134/S1547477124700870","url":null,"abstract":"<p>DUNE is a long-baseline experiment for neutrino oscillation studies. Its near detector complex consists of three main parts. One of them is ND-LAr, the liquid argon time projection chamber (LAr-TPC). In LAr-TPC’s, a light collecting system (LCS) is commonly used as a trigger system. In this work the ND-LAr LCS is considered. The data from ProtoDUNE Dual Phase and Module 0 LAr-TPC prototypes was used to obtain the parameters of scintillation in liquid argon for Geant4 simulation. Then, the response of the Module 0 LCS in events with cosmic muons was compared with the response of its Geant4 model in identical simulated events to estimate the photon detection efficiency of the ND-LAr LCS. After that, single-particle and two-particle events with different shifts in time and space between tracks were simulated to determine the time and spatial resolution of the ND-LAr LCS. Obtained results allow us to judge whether the characteristics of the ND-LAr LCS satisfy the experiment requirements.</p>","PeriodicalId":730,"journal":{"name":"Physics of Particles and Nuclei Letters","volume":"21 4","pages":"635 - 637"},"PeriodicalIF":0.4,"publicationDate":"2024-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142411658","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Correlation Functions in Holographic RG Flow of 3d Supergravity 三维超引力全息 RG 流中的相关函数
IF 0.4
Physics of Particles and Nuclei Letters Pub Date : 2024-08-14 DOI: 10.1134/S1547477124700614
K. Arkhipova
{"title":"Correlation Functions in Holographic RG Flow of 3d Supergravity","authors":"K. Arkhipova","doi":"10.1134/S1547477124700614","DOIUrl":"10.1134/S1547477124700614","url":null,"abstract":"<p>In this work we study holographic RG flows in <span>(3)</span>-dimensional supergravity model with a scalar field and non-trivial potential. The holographic RG flow is described by the domain wall solution, which is asymptotically AdS and includes a scalar field and is defined by the Dirichlet boundary conditions. This solution can be interpreted as a deformation of a dual theory either by a relevant operator or a vacuum expectation value (VEV) of the operator. VEVs of the scalar operators are calculated which confirm that the interpretation of the deformation of the dual theory is valid.</p>","PeriodicalId":730,"journal":{"name":"Physics of Particles and Nuclei Letters","volume":"21 4","pages":"571 - 573"},"PeriodicalIF":0.4,"publicationDate":"2024-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142411659","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
On the Azimuthal Flow of Protons in the Heavy Ion Collisions at (sqrt {{{s}_{{NN}}}} ) = 2–4 GeV 论重离子碰撞中质子在 (sqrt {{{s}_{{NN}}}} ) = 2-4 GeV 处的方位流动
IF 0.4
Physics of Particles and Nuclei Letters Pub Date : 2024-08-14 DOI: 10.1134/S1547477124700961
M. Mamaev
{"title":"On the Azimuthal Flow of Protons in the Heavy Ion Collisions at (sqrt {{{s}_{{NN}}}} ) = 2–4 GeV","authors":"M. Mamaev","doi":"10.1134/S1547477124700961","DOIUrl":"10.1134/S1547477124700961","url":null,"abstract":"<p>One of the main goals of the heavy ion collision experiments is studying the properties of strongly interacting matter created at different states in the overlap region of two intercepting ions. At a relatively low energy of several-GeV per nucleon pair created matter can be characterized by high net baryon densities and relatively low temperatures. The azimuthal anisotropy or produced in the collision hadrons is a valuable probe of the properties of the matter within the overlap region. In this work I present the observation of the scaling properties of the directed flow of protons on energy of the collision as well as the system size. I also elaborate on the directed flow of protons dependence on the geometry of the collision.</p>","PeriodicalId":730,"journal":{"name":"Physics of Particles and Nuclei Letters","volume":"21 4","pages":"661 - 663"},"PeriodicalIF":0.4,"publicationDate":"2024-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142411673","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Analysis of Rare Kaon Decay ({{K}^{ + }} to {{pi }^{ + }}{{pi }^{ - }}{{pi }^{ + }}gamma ) in Experiment NA62 分析 NA62 试验中的稀有 Kaon Decay （{{K}^{ + }} to {{pi }^{ + }}{{pi }^{ - }}{{pi }^{ + }}gamma )
IF 0.4
Physics of Particles and Nuclei Letters Pub Date : 2024-08-14 DOI: 10.1134/S1547477124701115
A. V. Okhotnikov
{"title":"Analysis of Rare Kaon Decay ({{K}^{ + }} to {{pi }^{ + }}{{pi }^{ - }}{{pi }^{ + }}gamma ) in Experiment NA62","authors":"A. V. Okhotnikov","doi":"10.1134/S1547477124701115","DOIUrl":"10.1134/S1547477124701115","url":null,"abstract":"<p>t—Progress in the study of a rare decay of a charged kaon is presented. Publications pertaining to this problem are briefly reviewed, and the results obtained are described. The application of the unfolding procedure for the energy spectrum of photons produced in decays is shown.</p>","PeriodicalId":730,"journal":{"name":"Physics of Particles and Nuclei Letters","volume":"21 4","pages":"698 - 700"},"PeriodicalIF":0.4,"publicationDate":"2024-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142411685","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Regge Limit of Correlation Function in 6d Biscalar Fishnet Models 6d Biscalar 鱼网模型中相关函数的 Regge 极限
IF 0.4
Physics of Particles and Nuclei Letters Pub Date : 2024-08-14 DOI: 10.1134/S1547477124700663
R. M. Iakhibbaev
{"title":"Regge Limit of Correlation Function in 6d Biscalar Fishnet Models","authors":"R. M. Iakhibbaev","doi":"10.1134/S1547477124700663","DOIUrl":"10.1134/S1547477124700663","url":null,"abstract":"<p>In this paper we give spectra for biscalar fishnet models in arbitrary dimensions for the zero-magnon and one-magnon cases. We also present the results of the computation of the Regge limit of the correlation functions in terms of Mellin amplitudes in the strong and weak modes of the coupling constant for six-dimensional model</p>","PeriodicalId":730,"journal":{"name":"Physics of Particles and Nuclei Letters","volume":"21 4","pages":"587 - 589"},"PeriodicalIF":0.4,"publicationDate":"2024-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142411704","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Calculation of a Multidimensional Integral with a Singularity by Dividing the Integration Domain into Subsegments 通过将积分域划分为若干小段计算具有奇点的多维积分
IF 0.5
Physics of Particles and Nuclei Letters Pub Date : 2024-08-14 DOI: 10.1134/s1547477124701346
A. V. Friesen, D. Goderidze, Yu. L. Kalinovsky
{"title":"Calculation of a Multidimensional Integral with a Singularity by Dividing the Integration Domain into Subsegments","authors":"A. V. Friesen, D. Goderidze, Yu. L. Kalinovsky","doi":"10.1134/s1547477124701346","DOIUrl":"https://doi.org/10.1134/s1547477124701346","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Calculating multidimensional integrals with a singularity of type <span>(int ldots int {{{f(x)} mathord{left/ {vphantom {{f(x)} {left( {x - c} right)}}} right. kern-0em} {left( {x - c} right)}}} )</span> is not a simple task. The methods used to calculate such an integral must effectively bypass the singularity, minimizing the error. This work presents an algorithm that, in the process of calculating the integral, analyzes the area of integration, dividing it into subsegments. Subsegments containing a singularity, as well as those located close to the singularity, are excluded during the final calculation of the integral. Integrals final calulation is carried out using the Monte Carlo integration method. The algorithm allows to calculate both one-dimensional and multidimensional integrals.</p>","PeriodicalId":730,"journal":{"name":"Physics of Particles and Nuclei Letters","volume":"37 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2024-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142176671","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Development of Next-Generation Event Visualization Platform for the BM@N Experiment 为 BM@N 试验开发下一代事件可视化平台
IF 0.5
Physics of Particles and Nuclei Letters Pub Date : 2024-08-14 DOI: 10.1134/s1547477124701358
E. Blinova, I. Dunaev, K. Gertsenberger, P. Klimai, A. Nozik
{"title":"Development of Next-Generation Event Visualization Platform for the BM@N Experiment","authors":"E. Blinova, I. Dunaev, K. Gertsenberger, P. Klimai, A. Nozik","doi":"10.1134/s1547477124701358","DOIUrl":"https://doi.org/10.1134/s1547477124701358","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>In high-energy physics experiments the ability to display both detector geometry and physical objects of particle collision events, such as hits and particle tracks has become an essential feature required for physicists to better understand particular collision events as well as to present the physical results to a wider audience. Currently, most experimental collaborations build their own event display solutions with little to no unification between them. In this work, a new event visualization solution for the BM@N (Baryonic Matter at Nuclotron) experiment, a fixed target experiment of the NICA (Nuclotron-based Ion Collider fAcility) project, is presented. The solution is based on VisionForge, a modern open-source visualization system. An important part of the solution is integration of the system with the experiment’s software framework, BmnRoot, which is a CERN ROOT-based environment. Several possible methods of such integration are discussed and the established architecture of the next-generation visualization system is explained.</p>","PeriodicalId":730,"journal":{"name":"Physics of Particles and Nuclei Letters","volume":"1 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2024-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142176672","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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