Physics of Particles and Nuclei Letters最新文献

Single-Mode 350-MHz Cavity for a Storage Ring of the SILA Megaproject 用于SILA大型项目存储环的单模350-MHz腔

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Physics of Particles and Nuclei Letters Pub Date : 2025-08-11 DOI: 10.1134/S1547477125700347

Yu. V. Zuev, M. V. Varlamova, Z. A. Andreeva, A. A. Akimova

引用次数: 0

Buncher of an Ion Accelerator–Injector of a Synchrotron Complex 离子加速器的聚束器-同步加速器复合体的注入器

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Physics of Particles and Nuclei Letters Pub Date : 2025-08-11 DOI: 10.1134/S1547477125700384

I. R. Kalieva, Y. M. Abakumov

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Current Projects of NIIEFA Cyclotron Systems for Production of Radionuclides NIIEFA生产放射性核素回旋加速器系统的当前项目

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Physics of Particles and Nuclei Letters Pub Date : 2025-08-11 DOI: 10.1134/S154747712570061X

K. E. Smirnov, A. A. Akimova, Yu. N. Gavrish, I. V. Gorbunov, S. V. Grigorenko, K. A. Kravchuk, R. M. Klopenkov, A. N. Kuzhlev, V. G. Mudrolyubov, Yu. K Osina, M. V. Usanova

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Development of a Magnetic System for Parallel Electron Beam Transfer in the LINAС-200 Accelerator LINAС-200加速器中平行电子束传输磁系统的研制

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Physics of Particles and Nuclei Letters Pub Date : 2025-08-11 DOI: 10.1134/S1547477125700578

O. L. Seroshtanov, V. V. Kobets, A. N. Trifonov, A. A. Ulankin

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Experience in and Prospects for Using Flow Meters Based on Orifice Devices in the Cryogenic Supply System of the NICA Accelerator Complex 基于孔板装置的流量计在NICA加速器综合低温供给系统中的应用经验与展望

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Physics of Particles and Nuclei Letters Pub Date : 2025-08-11 DOI: 10.1134/S1547477125700323

S. V. Gudkov, T. G. Zhironkina, A. V. Konstantinov, Yu. A. Mitrofanov, D. S. Shvidkiy

{"title":"Experience in and Prospects for Using Flow Meters Based on Orifice Devices in the Cryogenic Supply System of the NICA Accelerator Complex","authors":"S. V. Gudkov, T. G. Zhironkina, A. V. Konstantinov, Yu. A. Mitrofanov, D. S. Shvidkiy","doi":"10.1134/S1547477125700323","DOIUrl":"10.1134/S1547477125700323","url":null,"abstract":"The gas flow rate through the cryogenic supply systems of the NICA accelerator complex is a parameter whose measurement plays a decisive role in the operation and maintenance of equipment and in the optimization of the technological process. Monitoring the measurement of compressed helium flow rate through the MO-800 adsorber of oil purification and drying units makes it possible to track the time of production of the adsorbent’s protective effect and replace it in a timely manner. A technique for selecting a diaphragm-type flow meter and measuring the flow through it for the MO-800 No. 4 oil purification and drying unit. A diaphragm with control and measuring instruments was installed on the compressed helium outlet line from the unit in February 2024. In April 2024, a software package for measuring flow, monitoring the residual amount of adsorbent, and promptly informing the operator was developed and implemented as part of the MO‑800 No. 4 automated process control system. Possible applications of diaphragms for measuring the performance of compressor equipment and the refrigeration capacity of cryogenic installations is also examined.","PeriodicalId":730,"journal":{"name":"Physics of Particles and Nuclei Letters","volume":"22 4","pages":"660 - 664"},"PeriodicalIF":0.4,"publicationDate":"2025-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144814295","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

Methods for Determining the Thickness and Elemental Composition of Thin Layers Irradiated by an Ion Beam in Measuring Nuclear Reaction Cross-Sections 核反应截面测量中离子束辐照薄层厚度和元素组成的测定方法

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Physics of Particles and Nuclei Letters Pub Date : 2025-08-11 DOI: 10.1134/S154747712570027X

M. I. Bikchurina, I. P. Asanov, T. A. Bykov, D. A. Kasatov, Ya. A. Kolesnikov, A. G. Nikolaev, E. M. Oks, G. M. Ostreinov, S. S. Savinov, E. O. Sokolova, S. V. Trubina, A. A. Shuklina, G. Yu. Yushkov, S. Yu. Taskaev

{"title":"Methods for Determining the Thickness and Elemental Composition of Thin Layers Irradiated by an Ion Beam in Measuring Nuclear Reaction Cross-Sections","authors":"M. I. Bikchurina, I. P. Asanov, T. A. Bykov, D. A. Kasatov, Ya. A. Kolesnikov, A. G. Nikolaev, E. M. Oks, G. M. Ostreinov, S. S. Savinov, E. O. Sokolova, S. V. Trubina, A. A. Shuklina, G. Yu. Yushkov, S. Yu. Taskaev","doi":"10.1134/S154747712570027X","DOIUrl":"10.1134/S154747712570027X","url":null,"abstract":"VITA, a neutron accelerator based on an accelerating tandem with vacuum isolation, has been created and is now operated at Budker Institute of Nuclear Physics. VITA includes a tandem electrostatic particle accelerator with a unique design (accelerator tandem with vacuum insulation) intended for generating a monochromatic proton or deuteron beam with an energy of up to 2.3 MeV and the current up to 10 mA. The facility is equipped with γ, α, and neutron spectrometers and dosimeters. The accelerator is used for the development of boron neutron-capture therapy of malignant tumors, radiation testing of advanced materials, and more recently for measuring cross-sections of nuclear reactions. Reliable determination of the linear thickness of atomic nuclei, interacting with a charged particle beam and impurities and affecting the charged particle braking rate, is of uttermost importance for measuring cross sections of nuclear reactions. The difficulty in determining these parameters may explain the significant variation in the data on cross-sections of nuclear reactions provided by various groups of researchers. The study presents the results of the measurements of cross-sections of some nuclear reactions. Attention is focused on the description of the methods used to measure the thickness and elemental composition of thin investigated layers irradiated by a proton or deuteron beam. The applicability of these methods and their accuracy are discussed; the results obtained are compared. Proposals for the development of the diagnostic for further measurements of cross-sections of nuclear reactions are discussed.","PeriodicalId":730,"journal":{"name":"Physics of Particles and Nuclei Letters","volume":"22 4","pages":"636 - 640"},"PeriodicalIF":0.4,"publicationDate":"2025-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144814297","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

Description of the Processes ({{e}^{ + }}{{e}^{ - }} to {{K}^{ + }}{{K}^{ - }}{{pi }^{0}}) and ({{e}^{ + }}{{e}^{ - }} to {{K}^{ + }}{{K}^{ - }}eta ) within the Extended NJL Model 扩展NJL模型中进程({{e}^{ + }}{{e}^{ - }} to {{K}^{ + }}{{K}^{ - }}{{pi }^{0}})和({{e}^{ + }}{{e}^{ - }} to {{K}^{ + }}{{K}^{ - }}eta )的描述

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Physics of Particles and Nuclei Letters Pub Date : 2025-08-11 DOI: 10.1134/S1547477125700736

M. K. Volkov, A. A. Pivovarov, K. Nurlan

引用次数: 0

Dynamics of FRW Cosmology with (q = a - frac{b}{H}) in f(R, ({{L}_{m}})) Gravity f（R, ({{L}_{m}})）引力中(q = a - frac{b}{H})的FRW宇宙学动力学

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Physics of Particles and Nuclei Letters Pub Date : 2025-08-11 DOI: 10.1134/S154747712570075X

K. P. Singh, S. Sabanam

{"title":"Dynamics of FRW Cosmology with (q = a - frac{b}{H}) in f(R, ({{L}_{m}})) Gravity","authors":"K. P. Singh, S. Sabanam","doi":"10.1134/S154747712570075X","DOIUrl":"10.1134/S154747712570075X","url":null,"abstract":"We examine the unknown nature of the source of accelerating expansion of universe in general relativity which leads many researchers to delve into the evolution of our universe in the framework of modified theory of gravity. Here, specially we investigate on Friedmann–Robertson–Walker (FRW) space time filled with a perfect fluid in (f(R,{{L}_{m}})) modified theory framework formulated by Harko and Lobo (2010), where (R) is the Ricci scalar curvature, ({{L}_{m}}) is the ideal fluid’s Lagrangian. To accomplish this, we use a specific form of (f(R,{{L}_{m}})) gravity as (f(R,{{L}_{m}}) = frac{R}{2} + alpha L_{m}^{n} - beta ), where (alpha ), (beta ), and (n) are positive model parameters. Here we employ the parametrization of the deceleration parameter (q = a - frac{b}{H}) to resolve the modified field equations in the framework of (f(R,{{L}_{m}})) gravity for Friedmann–Robertson–Walker (FRW) metric. The evolution of different cosmological parameters have been examined by means of their graphs. We have also obtained our model parameters with 46 points observational Hubble dataset. We have analysed Energy conditions, statefinder and (Om(z)) diagnostics. Finally we have estimated the present age of the universe. The proposed model behaves as a dark energy model and we come to know that it behaves as the SCDM model during early stage of the universe and (Lambda )CDM model during the late time.","PeriodicalId":730,"journal":{"name":"Physics of Particles and Nuclei Letters","volume":"22 4","pages":"869 - 882"},"PeriodicalIF":0.4,"publicationDate":"2025-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144814427","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

Control System of HILAC and LU-20 Linear Accelerators HILAC和LU-20直线加速器的控制系统

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Physics of Particles and Nuclei Letters Pub Date : 2025-08-11 DOI: 10.1134/S1547477125700724

E. V. Gorbachev, V. G. Elkin

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Forming a Field of Precision Lenses on Permanent Magnets Using an Algorithm for Grouping Individual Magnets from a Sample Containing Measured Values of Their Parameters 在永磁体上形成一个精密透镜场，使用一种算法从包含其参数测量值的样本中分组单个磁体

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Physics of Particles and Nuclei Letters Pub Date : 2025-08-11 DOI: 10.1134/S1547477125700372

V. M. Amoskov, T. V. Glushenkova, G. G. Gulbekian, N. S. Znamentchikova, I. A. Ivanenko, V. D. Kazantseva, N. Yu. Kazarinov, I. V. Kalagin, M. V. Kaparkova, N. A. Krylova, V. P. Kukhtin, E. A. Lamzin, A. A. Makarov, D. D. Melnikov, A. N. Nezhentsev, D. A. Ovsyannikov, N. F. Osipov, M. V. Semenova, S. E. Sychevsky, N. A. Shatyil

引用次数: 0