SIBERIAN JOURNAL OF PHYSICS最新文献

Operation of Rf Systems During Joint Booster and Nuclotron Sessions 在联合推进器和核反应堆会议期间运行射频系统

SIBERIAN JOURNAL OF PHYSICS Pub Date : 2024-07-18 DOI: 10.25205/2541-9447-2024-19-2-71-79

O. I. Brovko, A. A. Volodin, V. A. Lebedev, E. M. Syresin, A. Sidorin, G. Fatkin

{"title":"Operation of Rf Systems During Joint Booster and Nuclotron Sessions","authors":"O. I. Brovko, A. A. Volodin, V. A. Lebedev, E. M. Syresin, A. Sidorin, G. Fatkin","doi":"10.25205/2541-9447-2024-19-2-71-79","DOIUrl":"https://doi.org/10.25205/2541-9447-2024-19-2-71-79","url":null,"abstract":"The article discusses the results of commissioning of RF systems of the NICA injection complex and plans for their further development. The preparation of the injection complex for injection into the collider requires an increase in the beam intensity in the Nuclotron outlet by about two orders of magnitude. Obtaining the required intensity will be achieved by accumulating the beam on injection energy using electronic cooling and reducing acceleration losses. This will require optimization of all systems of the complex, including a significant reduction in losses associated with RF systems. The experience allows us to choose the optimal strategy for the further development of HF systems. The main directions are: (1) accumulation of the beam in the longitudinal phase space during injection into the Booster, (2) reduc- tion of the growth of the longitudinal emittance during acceleration, (3) bypass of the beam clot-in-clot from the Booster to the Nuclotron without growth of the longitudinal emittance, and (4) minimizing losses during acceleration and beam bypasses. The latter requires matching the acceleration rate with the capabilities of existing HF systems.","PeriodicalId":509351,"journal":{"name":"SIBERIAN JOURNAL OF PHYSICS","volume":" 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141825378","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

Design of a Facility for Simultaneous Irradiation with Two Ion Beams based on the HIPR Accelerator for Simulations Neutron Influence 设计基于 HIPR 加速器的双离子束同时辐照设施以模拟中子影响

SIBERIAN JOURNAL OF PHYSICS Pub Date : 2024-07-18 DOI: 10.25205/2541-9447-2024-19-2-57-62

P. Fedin, K. E. Prianishnikov, A. Ziiatdinova, A. Kozlov, V. K. Semyachkin, R. Kuibeda, T. V. Kulevoy

引用次数: 0

Experimental Study of the Wave Train Development in a Longitudinal Trace in the Fat Plate Boundary Layer at Mach 2.5 2.5 马赫时脂肪板边界层纵向轨迹波列发展的实验研究

SIBERIAN JOURNAL OF PHYSICS Pub Date : 2024-07-18 DOI: 10.25205/2541-9447-2024-19-2-95-110

M. V. Piterimova, A. D. Kosinov, N. Semionov, A. Yatskikh, A. Shmakova, Yuri G. Yermolaev, B. Smorodsky

引用次数: 0

On the Effect of Focusing Conditions on the Emission Capacity of a Laser-Plasma Ion Source 聚焦条件对激光等离子体离子源发射能力的影响

SIBERIAN JOURNAL OF PHYSICS Pub Date : 2024-07-18 DOI: 10.25205/2541-9447-2024-19-2-88-94

E. Vovchenko, K. I. Kozlovskij, S. M. Polozov, A. Shikanov, E. A. Morozova, A. Isaev

引用次数: 0

Simulation and Measurement of Carbon Ion Beam Emittance in the Channel of Radiobiological Research at the Accelerator Complex U-70 模拟和测量 U-70 加速器综合体放射生物学研究通道中的碳离子束发射率

SIBERIAN JOURNAL OF PHYSICS Pub Date : 2024-07-18 DOI: 10.25205/2541-9447-2024-19-2-63-70

A. V. Maximov, F. Novoskoltsev, R. Sinyukov, A. A. Yanovich

引用次数: 0

Fourier Transform at the Workshop on Physical Optics of NSU 国立科学大学物理光学研讨会上的傅立叶变换

SIBERIAN JOURNAL OF PHYSICS Pub Date : 2024-07-18 DOI: 10.25205/2541-9447-2024-19-2-111-118

S. E. Krasnopevtsev

引用次数: 0

Newest ELV Type Accelerators with up to 4 MeV Energy 能量高达 4 MeV 的最新 ELV 型加速器

SIBERIAN JOURNAL OF PHYSICS Pub Date : 2024-07-18 DOI: 10.25205/2541-9447-2024-19-2-80-87

D. Vorobev, N. Kuksanov, E. Domarov, Yuriy I. Golubenko, A. Korchagin, R. Salimov, S. Fadeev, I. Chakin, A. V. Semenov, A. Lavrukhin, Yu. E. Potapova

引用次数: 0

Central Region of the С-250 Cyclotron С-250回旋加速器中心区

SIBERIAN JOURNAL OF PHYSICS Pub Date : 2024-07-17 DOI: 10.25205/2541-9447-2024-19-2-50-56

I. V. Gorbunov, A. V. Galchuk, S. Grigorenko, Yu. K. Osina, S. S. Tsygankov

引用次数: 0

Measurements of the Neutron Field Parameters with Monitors based on the Gas-Filled Proportional Counters 利用基于充气比例计数器的监测器测量中子场参数

SIBERIAN JOURNAL OF PHYSICS Pub Date : 2024-07-16 DOI: 10.25205/2541-9447-2024-19-2-41-49

I. Azhgirey, I. Bayshev, V. A. Pikalov, O. Sumaneev

{"title":"Measurements of the Neutron Field Parameters with Monitors based on the Gas-Filled Proportional Counters","authors":"I. Azhgirey, I. Bayshev, V. A. Pikalov, O. Sumaneev","doi":"10.25205/2541-9447-2024-19-2-41-49","DOIUrl":"https://doi.org/10.25205/2541-9447-2024-19-2-41-49","url":null,"abstract":"Neutron monitors with the gas filled proportional counters inside and first data were presented at RuPAC-2018 and RuPAC-2021 conferences. It is planned to use such devices to monitor the stability of irradiation conditions during ra- diation therapy sessions. We present here the calibration procedure for these monitors at AmBe neutron source, and the new data. These monitors have been used to measure the neutron fluence behind the shielding of the 450 MeV/nucleon carbon beam based experimental facility “Shared use Center – radiobiological stand with the carbon beam of the U-70 accelerator at IHEP”. The measurements were supported by the set of extensive simulations using the CERN FLUKA code. Good agreement between the FLUKA simulations and measurements was shown. Even single monitor with lead insertion calibrated at AmBe neutron source allows to have a good result in the real neutron field. The possibility to estimate the fluence of the high energy neutrons with the energy above 10 MeV using data from the pair of monitors was demonstrated. To improve the quality of the measurements one needs to take into account difference between calibration and measurements conditions.","PeriodicalId":509351,"journal":{"name":"SIBERIAN JOURNAL OF PHYSICS","volume":" 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141831866","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

Luminosity calibration bias in van-der-Meer scan due to the beam-beam interaction for q-Gaussian beams q 高斯光束的光束-光束相互作用导致的范-德尔-米尔扫描光度校准偏差

SIBERIAN JOURNAL OF PHYSICS Pub Date : 2024-07-16 DOI: 10.25205/2541-9447-2024-19-2-33-40

M. A. Abed, A. Babaev, L. Sukhikh

{"title":"Luminosity calibration bias in van-der-Meer scan due to the beam-beam interaction for q-Gaussian beams","authors":"M. A. Abed, A. Babaev, L. Sukhikh","doi":"10.25205/2541-9447-2024-19-2-33-40","DOIUrl":"https://doi.org/10.25205/2541-9447-2024-19-2-33-40","url":null,"abstract":"The accuracy of luminosity calibration is an important problem in the operation of colliders, the successful solution of which determines the accuracy of the experiments performed. In hadron colliders, luminosity calibration is performed using van-der-Meer scanning, the goal of which is to measure the overlap of the colliding beams. When two beams collide, their electromagnetic interaction leads to a change in their overlap and, consequently, the luminosity calibration is biased. Typically, this effect is accounted for under the assumption that beams have a Gaussian particle distribution. However, it is known that the particle distribution in hadron collider beams differs from Gaussian and is more generally described by q-Gaussian functions. Accurate accounting of electromagnetic interaction becomes an urgent task as the requirements for the accuracy of luminosity measurements increase (for example, in the HL-LHC project the goal is an accuracy of 1 %). This paper presents a model of the electromagnetic interaction of beams with a q-Gaussian distribution of particles, and determines the influence of this interaction on the luminosity calibration using the van der Meer scanning method. Calculations were carried out for beams with conditions of the CMS and ATLA experiments.","PeriodicalId":509351,"journal":{"name":"SIBERIAN JOURNAL OF PHYSICS","volume":" 8","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141832867","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