Journal of Instrumentation最新文献_第3页

Development of a Collective Thomson Scattering diagnostic system on SNU X-pinch device 在 SNU X-pinch 设备上开发集体汤姆逊散射诊断系统

IF 1.3 4区工程技术

Journal of Instrumentation Pub Date : 2023-12-01 DOI: 10.1088/1748-0221/18/12/C12004

Jongmin Lee, Jung-Hwa Kim, Sungbin Park, Yong Sung You, Jae-seok Lee, Y. Ghim, Y.S. Hwang

引用次数: 0

The HSPC — a high speed PCIe readout card for the HFRS-TPC HSPC - 用于 HFRS-TPC 的高速 PCIe 读卡器

IF 1.3 4区工程技术

Journal of Instrumentation Pub Date : 2023-12-01 DOI: 10.1088/1748-0221/18/12/P12008

Jing Tian, Zhipeng Sun, Songbo Chang, Yi Qian, Hongyun Zhao, Zhengguo Hu

引用次数: 0

Recent H- ion source research and development at the Oak Ridge National Laboratory 橡树岭国家实验室最近的氢离子源研究与开发工作

IF 1.3 4区工程技术

Journal of Instrumentation Pub Date : 2023-12-01 DOI: 10.1088/1748-0221/18/12/C12011

R. Welton, B. Han, M. Stockli, S. Murray, T. Pennisi, C. Stinson, V. Andzulis, G. Terszakowec, C. Piller, O. Tarvainen, D. Willis

{"title":"Recent H- ion source research and development at the Oak Ridge National Laboratory","authors":"R. Welton, B. Han, M. Stockli, S. Murray, T. Pennisi, C. Stinson, V. Andzulis, G. Terszakowec, C. Piller, O. Tarvainen, D. Willis","doi":"10.1088/1748-0221/18/12/C12011","DOIUrl":"https://doi.org/10.1088/1748-0221/18/12/C12011","url":null,"abstract":"The U.S. Spallation Neutron Source (SNS) is a state-of-the-art neutron scattering facility delivering the world's most intense pulsed neutron beams to a wide array of instruments which are used to conduct investigations in many fields of science and engineering. Neutrons are produced from spallation of liquid Hg by bombardment of short (∼1 μs), intense (∼35 A) pulses of protons delivered at 60 Hz by a storage ring which is fed by a high-intensity, ∼1 GeV H- LINAC. This facility has operated almost continuously since 2006, with ion source performance increasing over those years, and currently providing 50–60 mA of H- ions with a duty-factor of 6% for maintenance-free runs of several months with near 100% availability. Ion source research and development at ORNL has played a key role in enabling and supporting this success: this report provides an update on some of the ongoing ion source research and development efforts which have been undertaken since the previous Negative Ion Beams and Sources (NIBS) conference in 2020. These include significant improvements to H- beam current by extraction from a larger source outlet aperture and improvements to the electron dumping system which should eliminate the gradual loss of electrode voltage over the course of a run which has occasionally impacted SNS operations. Improvement and simplification of the plasma ignition system for the external antenna ion source, a long-standing problem, was also realized. Lastly, RF coupling efficiency was measured for both the SNS internal and external antenna ion sources.","PeriodicalId":16184,"journal":{"name":"Journal of Instrumentation","volume":"68 13","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139014278","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A generic node identification and routing algorithm in a distributed data acquisition platform: D-Matrix 分布式数据采集平台中的通用节点识别和路由算法：D-Matrix

IF 1.3 4区工程技术

Journal of Instrumentation Pub Date : 2023-12-01 DOI: 10.1088/1748-0221/18/12/P12012

Zhengyang Sun, Junfeng Yang, Lei Zhang, Tianxing Wang, Ruolin Liu, Kezhu Song

{"title":"A generic node identification and routing algorithm in a distributed data acquisition platform: D-Matrix","authors":"Zhengyang Sun, Junfeng Yang, Lei Zhang, Tianxing Wang, Ruolin Liu, Kezhu Song","doi":"10.1088/1748-0221/18/12/P12012","DOIUrl":"https://doi.org/10.1088/1748-0221/18/12/P12012","url":null,"abstract":"Data acquisition (DAQ) systems are vital components in large-scale physics experiments. For communication, control and tracking purposes, all system components must be unambiguously identified. D-Matrix, as a generic distributed stream processing DAQ platform, accommodates various device connection methods, including networking, PCIe bus, point-to-point optical fiber links, etc. Although there are mature node identification solutions for each connection method individually, the uniform solution applicable to all connection methods remains crucial in a generic DAQ platform. D-Matrix abstracts a unified Multiple Point-to-Point transmission model (MPP model), supporting various physical connection methods and enabling multiple communication channels on a single physical link. Referring to the tree universal address system, a generic automatic node identification algorithm is proposed based on the MPP model. With simple configuration, this algorithm enables automatic node traversal, yielding a routing-based identification result that supports clustering and hierarchical node management requirements common in large-scale physics experiments. This paper explains the details of the algorithm and presents an example of the DAQ system based on the algorithm.","PeriodicalId":16184,"journal":{"name":"Journal of Instrumentation","volume":"299 2","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139019964","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Beam commissioning of the SARAF Injector and MEBT (protons) SARAF 注入器和 MEBT（质子）的光束试运行

IF 1.3 4区工程技术

Journal of Instrumentation Pub Date : 2023-12-01 DOI: 10.1088/1748-0221/18/12/T12003

L. Weissman, R. Weiss-Babai, A. Barak, A. Choquet, S. Cohen, K. Elimeleh, I. Eliyahu, H. Isakov, I. Gertz, N. Goldberger, C. Goresnic, Y. Itzhaki, B. Kaizer, A. Kreisel, I. Lapin, Y. Luner, H. Paami, A. Perry, I. Polikarpov, E. Reinfeld, J. Rodnizky, A. Shor, I. Shmuely, Y. Solomon, Sh. Talala, N. Tamim, S. Vaintraub, Sh. Varulker, T. Zchut, J. Dumas, A. Chance, D. Chirpaz, D. Darde, G. Desmarchelier, R. Duperrier, G. Ferrand, A. Gaget, F. Gohier, F. Gougnaud, T. Joannem, V. Nadot, N. Pichoff, F. Senée, C. Simon, N. Solenne, D. Uriot, L. Zhao

{"title":"Beam commissioning of the SARAF Injector and MEBT (protons)","authors":"L. Weissman, R. Weiss-Babai, A. Barak, A. Choquet, S. Cohen, K. Elimeleh, I. Eliyahu, H. Isakov, I. Gertz, N. Goldberger, C. Goresnic, Y. Itzhaki, B. Kaizer, A. Kreisel, I. Lapin, Y. Luner, H. Paami, A. Perry, I. Polikarpov, E. Reinfeld, J. Rodnizky, A. Shor, I. Shmuely, Y. Solomon, Sh. Talala, N. Tamim, S. Vaintraub, Sh. Varulker, T. Zchut, J. Dumas, A. Chance, D. Chirpaz, D. Darde, G. Desmarchelier, R. Duperrier, G. Ferrand, A. Gaget, F. Gohier, F. Gougnaud, T. Joannem, V. Nadot, N. Pichoff, F. Senée, C. Simon, N. Solenne, D. Uriot, L. Zhao","doi":"10.1088/1748-0221/18/12/T12003","DOIUrl":"https://doi.org/10.1088/1748-0221/18/12/T12003","url":null,"abstract":"The SARAF Phase II cryogenic linear accelerator (linac) is currently under construction and will be commissioned through collaborative efforts between SNRC and CEA. The linac will accelerate a 5 mA pulsed/continuous wave (CW) proton and deuteron beam, reaching energies of up to 35 MeV and 40 MeV, respectively. The linac injector consists of Phase I components, including an ECR ion source, a Low-Energy Beam Transport (LEBT) line, and a 4-rod Radio Frequency Quadruple (RFQ). Additionally, a new Medium Energy Beam Transport (MEBT) line has been installed and integrated into the injector infrastructure. The MEBT includes three rebuncher resonators, magneto-optical elements, and beam diagnostics. The MEBT beam diagnostics, as well as the Phase I D-plate installed downstream, were used for beam characterization. The downstream-installed Temporary Beam Line (TBL) and a prototype of the Gallium Indium Liquid Target (GALIT) were used for commissioning, operating at high beam duty cycles, including CW mode. The report describes the proton beam commissioning process of the injector prior to the delivery of the cryomodules, scheduled for the second half of 2023.","PeriodicalId":16184,"journal":{"name":"Journal of Instrumentation","volume":" 2","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138618260","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The combined research of ultra-high vacuum CF flange joints' sealing parameters considering plastic properties of materials 考虑材料塑性的超高真空 CF 法兰接头密封参数组合研究

IF 1.3 4区工程技术

Journal of Instrumentation Pub Date : 2023-12-01 DOI: 10.1088/1748-0221/18/12/P12010

A. Davtyan, H. Isunts, A. Vardanyan, A. Azizov, V. Avagyan

{"title":"The combined research of ultra-high vacuum CF flange joints' sealing parameters considering plastic properties of materials","authors":"A. Davtyan, H. Isunts, A. Vardanyan, A. Azizov, V. Avagyan","doi":"10.1088/1748-0221/18/12/P12010","DOIUrl":"https://doi.org/10.1088/1748-0221/18/12/P12010","url":null,"abstract":"Computer simulation and experimental research of the tightening processes of ultrahigh vacuum CF flange joints have been carried out. Finite element analyses were carried out considering the plastic properties of materials. The analysis variable parameters are flanges' knife edge angle between the shelves (Wheeler's and CERN's models), tip rounding radiuses, and gasket material state (annealed and hard). Curves of changes in the stress and strain intensities of the edge nodes of the flanges' knife edge were obtained. Essential sealing parameters of the ultrahigh vacuum system were also studied, such as the height of the knife edge, the length of the knife-edge trace on the gasket (in the radial direction), and the gap between two flanges. The mentioned sealing parameters' measurements were carried out by the combined method. The latter is a parameters' measurement of both computer simulation and experimental samples and a comparison of the obtained results. It should be noted that the sealing parameters were studied for several tightening cycles of the flanges to research their changes in case of multiple uses. The vital value of this research is obtained empirical functions for calculating the height of the flanges' knife edge based on the tightening cycles.","PeriodicalId":16184,"journal":{"name":"Journal of Instrumentation","volume":"237 ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139023421","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Performance evaluation of a single microchannel plate with large length-to-diameter ratio 大长径比单微通道板的性能评估

IF 1.3 4区工程技术

Journal of Instrumentation Pub Date : 2023-12-01 DOI: 10.1088/1748-0221/18/12/P12011

B. Yan, Shulin Liu, Binting Zhang, Huaxing Peng

{"title":"Performance evaluation of a single microchannel plate with large length-to-diameter ratio","authors":"B. Yan, Shulin Liu, Binting Zhang, Huaxing Peng","doi":"10.1088/1748-0221/18/12/P12011","DOIUrl":"https://doi.org/10.1088/1748-0221/18/12/P12011","url":null,"abstract":"The conventional microchannel plate (MCP) detector has found widespread application in various fields. This article focuses on investigating the performance of a single MCP with a large length-to-diameter ratio (L/D) of 80:1, particularly for single electron counting. To enhance MCP performance, alumina with a high secondary electron yield (SEY) is coated onto the MCP using atomic layer deposition (ALD). The SEYs of alumina thin films with different thicknesses are measured using a pulsing electron beam method. The 80:1 L/D MCPs operate in electron counting mode, and the optimal alumina thickness is determined through a comparative study of MCP performance before and after coating. The relationships between maximum SEY, primary electron energy, gain, peak-to-valley ratio (P/V), and pulse height resolution (PHR) are analyzed. After alumina coating, the single 80:1 MCP exhibits improved gain, P/V and PHR. The optimal P/V and PHR of a single MCP as functions of the primary electron energy align with the relationship between the SEY of the alumina coating and the primary electron energy. Additionally, the variation of DC gain with extracted charge is investigated. This article provides valuable insights for parameter selection in achieving the optimal working state of MCP and explores the potential application of single electron counting using a single MCP.","PeriodicalId":16184,"journal":{"name":"Journal of Instrumentation","volume":"165 2","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138991744","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The mass production of silicon sensors for the Phase-2 CMS Outer Tracker 为第二阶段 CMS 外部跟踪器量产硅传感器

IF 1.3 4区工程技术

Journal of Instrumentation Pub Date : 2023-12-01 DOI: 10.1088/1748-0221/18/12/C12006

Konstantinos Damanakis

引用次数: 0

Optimization of a YAP(Ce) prompt X-ray camera for imaging with spot scanning proton beams at clinical dose levels 优化 YAP(Ce)瞬时 X 射线照相机，以便在临床剂量水平下使用点扫描质子束成像

IF 1.3 4区工程技术

Journal of Instrumentation Pub Date : 2023-12-01 DOI: 10.1088/1748-0221/18/12/T12005

S. Yamamoto, T. Yamashita, Y. Kobashi, T. Yabe, T. Akagi, M. Yamaguchi, Naoki Kawachi, K. Kamada, A. Yoshikawa, J. Kataoka

{"title":"Optimization of a YAP(Ce) prompt X-ray camera for imaging with spot scanning proton beams at clinical dose levels","authors":"S. Yamamoto, T. Yamashita, Y. Kobashi, T. Yabe, T. Akagi, M. Yamaguchi, Naoki Kawachi, K. Kamada, A. Yoshikawa, J. Kataoka","doi":"10.1088/1748-0221/18/12/T12005","DOIUrl":"https://doi.org/10.1088/1748-0221/18/12/T12005","url":null,"abstract":"Prompt secondary electron bremsstrahlung X-ray (prompt X-ray) imaging using a low-energy X-ray camera is a promising method for observing the beam shape from outside a subject. However, it has sometimes been necessary to conduct such imaging at a higher dose than the clinical level to acquire images with acceptable quality. To solve this problem, we optimized a prompt X-ray imaging system to use for spot scanning proton therapy system. The new camera had more than one order higher sensitivity to image several types of beams, including those at the clinical dose level. The optimized prompt X-ray imaging system uses a 4 mm diameter pinhole collimator to increase sensitivity, and it is combined with a larger YAP(Ce) scintillator to increase the magnification ratio and thus improve spatial resolution. We used a list-mode data-acquisition system with high count rate capability. Prompt X-ray images were acquired by irradiating a water phantom with proton beams from the spot scanning proton therapy system. Measurements were taken for pencil beams, spread-out Bragg peak (SOBP) beams, and a beam utilized in actual clinical therapy. For all of the beams, we could measure scanning spot images within a spill and evaluate the ranges for the accumulated images at the clinical dose level. From the list-mode data, we measured the temporarily altered positions of the scanning beams as well as the accumulations of the prompt X-ray images. The optimized prompt X-ray imaging system could improve sensitivity while maintaining better spatial resolution. The new system realized prompt X-ray imaging at the clinical dose level and holds promise for future clinical imaging of prompt X-rays.","PeriodicalId":16184,"journal":{"name":"Journal of Instrumentation","volume":"101 28","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138609089","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Impedance of in-air undulator vacuum chamber in HEPS 高分辨率辐射计中空气起伏真空室的阻抗

IF 1.3 4区工程技术

Journal of Instrumentation Pub Date : 2023-12-01 DOI: 10.1088/1748-0221/18/12/P12003

Jintao Li, Na Wang, Sen Yue, Saike Tian

引用次数: 0