Journal of Instrumentation最新文献_第4页

On the possibility of accelerating charged particles in the low-pressure acoustoplasma and plasma bunches in the air 关于加速空气中低压声等离子体和等离子体束中带电粒子的可能性

Journal of Instrumentation Pub Date : 2024-07-01 DOI: 10.1088/1748-0221/19/07/c07005

A. Abrahamyan, R. Chilingaryan, S. A. Mkhitaryan, V. Kocharyan, A.A. Margaryan, A. H. Mkrtchyan

{"title":"On the possibility of accelerating charged particles in the low-pressure acoustoplasma and plasma bunches in the air","authors":"A. Abrahamyan, R. Chilingaryan, S. A. Mkhitaryan, V. Kocharyan, A.A. Margaryan, A. H. Mkrtchyan","doi":"10.1088/1748-0221/19/07/c07005","DOIUrl":"https://doi.org/10.1088/1748-0221/19/07/c07005","url":null,"abstract":"\u0000 In this paper obtained results of two experimental investigations are presented: on the acceleration of electrons in low-pressure acoustoplasma discharge and acceleration of plasma bunch-plasmoids in the air. The first experimental results on the acceleration of electrons in the low-pressure discharge were obtained in 2008. In the current paper an attempt to explain the obtained results by means of wake accelerations of particles in electromagnetic fields without utilization of usual drivers is made. Formerly calculated theoretical data for accelerated particles even in the energy range of 10–100 eV are experimentally confirmed. Experimental investigations on origination and initiating acceleration of plasma bunches in crossed fields in the air were conducted in 2023. In the current paper the obtained first results on acceleration of the originated long-life plasmoids in the air are presented as an announcement of our planned subsequent corresponding investigations. To carry out corresponding experiments a unique experimental setup, as well as appropriate devices and equipment were developed. A new conceptual model of a plasmoid is offered. The realization of this concept opens the possibility of carrying out the experimental investigations of the phenomena of origination of long-life plasmoids in air. During the experimental investigations, any ionizing additives into the discharge were not injected.","PeriodicalId":507814,"journal":{"name":"Journal of Instrumentation","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141847768","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 diamond detector as fast neutron spectroscopy in the EAST tokamak 在 EAST 托卡马克中开发作为快中子光谱仪的钻石探测器

Journal of Instrumentation Pub Date : 2024-07-01 DOI: 10.1088/1748-0221/19/07/p07017

S.Y. Lin, R.J. Zhou, K. K. Artemev, J.Z. Zhang, J.L. Zhao, G.Q. Zhong

引用次数: 0

An 11-bit SAR ADC for high frame rate and high-dynamic X-ray imaging at future XFELs 用于未来 XFEL 高帧率和高动态 X 射线成像的 11 位 SAR ADC

Journal of Instrumentation Pub Date : 2024-07-01 DOI: 10.1088/1748-0221/19/07/p07029

Z. Ji, X. Ju, S. Lu, S. Liu, T. Sun, S. Zhang, Z. Sheng, F. Gan, Z. Liu, T. Wang

引用次数: 0

Development and performance testing of a chamber for absorbed dose in water absolute measurement for 125I brachytherapy seeds 125I 近距离放射粒子水中吸收剂量绝对测量室的开发和性能测试

Journal of Instrumentation Pub Date : 2024-07-01 DOI: 10.1088/1748-0221/19/07/p07026

Zhongbin Hang, Yuntao Liu, Mingzhe Song, Kexin Wei, Hongyu Wang, Qingran Li, Ning Ni, Xu Zhao, Tao Sun, Fei Gao

{"title":"Development and performance testing of a chamber for absorbed dose in water absolute measurement for 125I brachytherapy seeds","authors":"Zhongbin Hang, Yuntao Liu, Mingzhe Song, Kexin Wei, Hongyu Wang, Qingran Li, Ning Ni, Xu Zhao, Tao Sun, Fei Gao","doi":"10.1088/1748-0221/19/07/p07026","DOIUrl":"https://doi.org/10.1088/1748-0221/19/07/p07026","url":null,"abstract":"\u0000 The application of more and more low-energy, low-dose-rate\u0000 photon radiation seeds in brachytherapy. According to the TG43 report\u0000 and TG43-U1 report issued by the American Association of Physicists\u0000 in Medicine, both apparent activity and air kerma strength are\u0000 physical characterization parameters of brachytherapy seed\u0000 strength,which are needed to convert into water absorbed dose at the\u0000 depth of 1 cm. At present, the method of obtaining the water\u0000 absorbed dose is to convert the air kerma strength, the uncertainty\u0000 of results exceeds 5% (k = 1), which could reduce the cure rate\u0000 of the treatment. In order to address this issue ,the China\u0000 Institute of Atomic Energy has designed a device that can directly\u0000 replicate the water absorbed dose of 125I brachytherapy\u0000 seeds,which is an extrapolation chamber embedded with water\u0000 equivalent material. In order to evaluate the performance of the\u0000 extrapolation chamber, a series of experiments were carried out,\u0000 including partial pressure test, leakage current, saturation curve,\u0000 response linearity, collection area and zero point position. The\u0000 test results show that the performance parameters of the\u0000 extrapolation chamber meet the relevant requirements.","PeriodicalId":507814,"journal":{"name":"Journal of Instrumentation","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141839338","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

Realization of modularized corrector magnet power supply with N+1 redundancy for TPS facilities 为 TPS 设备实现 N+1 冗余的模块化校正器磁体电源

Journal of Instrumentation Pub Date : 2024-07-01 DOI: 10.1088/1748-0221/19/07/t07007

Baosheng Wang, Kuobin Liu, Y. Wong

{"title":"Realization of modularized corrector magnet power supply with N+1 redundancy for TPS facilities","authors":"Baosheng Wang, Kuobin Liu, Y. Wong","doi":"10.1088/1748-0221/19/07/t07007","DOIUrl":"https://doi.org/10.1088/1748-0221/19/07/t07007","url":null,"abstract":"\u0000 This paper delves into implementing multi-module parallel\u0000 current output using the existing TPS storage ring correction magnet\u0000 power supply. We have devised a control interface card with N+1\u0000 redundancy to facilitate bipolar high-current parallel module\u0000 output. To achieve this, we have employed various current feedback\u0000 methods, including external DC Current Transducer (DCCT) and\u0000 internal module current feedback signals. Following PI compensation,\u0000 these feedback signals are amalgamated with reference current\u0000 signals to compute compensation values for each module, which are\u0000 subsequently disseminated to each Corrector Magnet Power Supply\u0000 (CMPS) for modulation, thereby enabling closed-loop current\u0000 control. A single CMPS module can deliver ± 48 V/± 10 A\u0000 output, while up to eight CMPS modules can be interconnected,\u0000 yielding a maximum output of ± 80 A. Through numerous\u0000 experimental measurements, the long-term output current stability\u0000 remains within 0.6 mA, or 7.5 ppm, with the output current\u0000 spectrum predominantly maintained within 500 μA. Furthermore,\u0000 the system boasts N+1 redundancy functionality and bipolar output\u0000 current characteristics. These exemplary performance attributes\u0000 underscore the criticality of our design for future applications of\u0000 TPS magnet power supplies.","PeriodicalId":507814,"journal":{"name":"Journal of Instrumentation","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141850801","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

Diffraction of light by a slit in anisotropic media with closed and open wave vector surface 各向异性介质中狭缝对光的衍射，有封闭波矢量面和开放波矢量面

Journal of Instrumentation Pub Date : 2024-06-01 DOI: 10.1088/1748-0221/19/06/c06002

H. Eritsyan, A. Lalayan, A. Margaryan, H. Arakelyan

引用次数: 0

A novel generation design dipole magnet power supply of booster to storage ring transport line in NSRRC 新型发电设计偶极子磁体为 NSRRC 的储能环运输线提供增压器电源

Journal of Instrumentation Pub Date : 2024-06-01 DOI: 10.1088/1748-0221/19/06/t06001

Y. Wong, Kuo-Bin Liu, Chen-Yao Liu, Bao-sheng Wang, Jhao-Cyuan Huang

{"title":"A novel generation design dipole magnet power supply of booster to storage ring transport line in NSRRC","authors":"Y. Wong, Kuo-Bin Liu, Chen-Yao Liu, Bao-sheng Wang, Jhao-Cyuan Huang","doi":"10.1088/1748-0221/19/06/t06001","DOIUrl":"https://doi.org/10.1088/1748-0221/19/06/t06001","url":null,"abstract":"\u0000 The Taiwan Light Source (TLS) is a synchrotron radiation\u0000 facility located in Taiwan. The booster ring at TLS injects\u0000 electrons into the storage ring, which then circulates the electrons\u0000 to produce synchrotron radiation for various experiments. The Taiwan\u0000 Light Source (TLS) has been in service for more than 20 years, and\u0000 some of the power supplies used in the facility are old and hard to\u0000 maintain repair and the component are phase-out. The upgrade is\u0000 specifically aimed at replacing the power supply for the BTS\u0000 (Booster to Storage ring) transmission line with a new\u0000 machine. During the regular shunt down time, dipole magnet power\u0000 supply replacements were completed. The main reason for using the\u0000 Chroma 62075H-30E power supply is commonality, for this machine is\u0000 widely used in Taiwan Photon Source (TPS), and the output current of\u0000 the power supply is paralleled to a dipole magnet. Therefore, a\u0000 total of 17 power supplies are used in this upgrade planned to be\u0000 executed. This novel generation upgrade design is important because\u0000 the power supply for the BTS transmission line is critical for the\u0000 operation of the facility, as it is responsible for maintaining the\u0000 electron beam at a stable energy level as it is injected from the\u0000 booster ring into the storage ring. A more reliable and efficient\u0000 power supply can help improve the stability and quality of the\u0000 electron beam, leading to better experimental results and more\u0000 efficient use of the facility. Overall, this novel generation\u0000 upgrade design is part of the ongoing effort to modernize and\u0000 improve the infrastructure of the TLS, ensuring that it remains a\u0000 state-of-the-art research facility for years to come.","PeriodicalId":507814,"journal":{"name":"Journal of Instrumentation","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141277586","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

A compact breath breathalyzer for identifying the non-alcoholic fatty liver disease biomarker 用于识别非酒精性脂肪肝生物标志物的小型呼气酒精测试仪

Journal of Instrumentation Pub Date : 2024-06-01 DOI: 10.1088/1748-0221/19/06/p06003

D.Z. Wang, X.Y. Hua, G.Q. Hu, Z.H. Wang, F.F. Yan, K.N. Zhang, C. Cheng, S.B. Li, X.Y. Wu, H.R. Wang

{"title":"A compact breath breathalyzer for identifying the non-alcoholic fatty liver disease biomarker","authors":"D.Z. Wang, X.Y. Hua, G.Q. Hu, Z.H. Wang, F.F. Yan, K.N. Zhang, C. Cheng, S.B. Li, X.Y. Wu, H.R. Wang","doi":"10.1088/1748-0221/19/06/p06003","DOIUrl":"https://doi.org/10.1088/1748-0221/19/06/p06003","url":null,"abstract":"\u0000 Non-alcoholic fatty liver disease (NAFLD) is a prevalent\u0000 chronic liver disease worldwide. Currently, its diagnosis relies\u0000 primarily on imaging and histological examinations, which are\u0000 invasive and prone to misdiagnosis in the early stage. To address\u0000 these limitations, detection and analysis of volatile organic\u0000 compounds (VOCs) in human breath can be a rapid and non-invasive\u0000 screening method for NAFLD. In this study, a compact breath\u0000 breathalyzer was developed, utilizing a miniaturized gas\u0000 chromatography chip with the STM32 microcontroller as the main\u0000 control chip to manage airflow, temperature, and receive terminal\u0000 signals from the photoionization detector. In the experiment, a gas\u0000 mixture comprising five VOCs (pentane, acetone, toluene, octane, and\u0000 decane) was selected as the simulated typical disease biomarkers in\u0000 human breath to investigate the breathalyzer's performance and\u0000 optimize testing conditions for multi-polar and wide-boiling-range\u0000 breath samples. Results show that the breathalyzer can detect\u0000 low-boiling components (< 100°C) such as the isoprene and\u0000 acetone, with a detection limit less than 50 ppb which are two\u0000 commonly biomarkers of NAFLD. Furthermore, breath samples were\u0000 collected from 35 non-diseased individuals, and NAFLD early-stage\u0000 patient samples were simulated by increasing the isoprene\u0000 concentration by 10 ppb. Convolutional neural network (CNN) were\u0000 used to identify the VOC signatures in gas chromatograms with\u0000 predictive accuracy of 85% for the classification model. Therefore,\u0000 the compact breath breathalyzer has potential application in the\u0000 rapid and early screening of NAFLD.","PeriodicalId":507814,"journal":{"name":"Journal of Instrumentation","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141280059","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

Computational investigation of transport parameters of ions in gas-filled radiation detectors 充气辐射探测器中离子传输参数的计算研究

Journal of Instrumentation Pub Date : 2024-06-01 DOI: 10.1088/1748-0221/19/06/p06005

Yalçın Kalkan, Sedat Arı, Salim Orak, Rob Veenhof

{"title":"Computational investigation of transport parameters of ions in gas-filled radiation detectors","authors":"Yalçın Kalkan, Sedat Arı, Salim Orak, Rob Veenhof","doi":"10.1088/1748-0221/19/06/p06005","DOIUrl":"https://doi.org/10.1088/1748-0221/19/06/p06005","url":null,"abstract":"\u0000 In this study, a novel computational method was developed to\u0000 investigate the transport characteristics of ions in gas-filled\u0000 radiation detectors, which are closely linked to the behavior of\u0000 ions in gaseous detectors. Parameters such as polarizability, mean\u0000 free path, collision frequency, and mean free time, which directly\u0000 impact ion mobility, were physically manipulated using the Monte\u0000 Carlo technique, and the results were validated against fundamental\u0000 physical principles. As an initial scenario, computations were\u0000 performed on the mobility of Ar+ ions in an argon\u0000 environment as a carrier gas. The distribution of the radial\u0000 velocity components of the ion following an ion-gas collision was\u0000 represented as a two-dimensional histogram with a disc-shaped\u0000 pattern, and this result was elucidated utilizing the\u0000 Maxwell-Boltzmann distribution. The findings regarding the mean free\u0000 time and mean free path of an Ar+ ion in an argon\u0000 carrier gas align with the results derived from Skullerud's\u0000 methodologies. These findings hold promise for Garfield++ \u0000 simulations, enabling the computation of ion mobility and even\u0000 cluster ions in the mixture, thereby considering their impact on the\u0000 detector's gain parameters. The results of this investigation offer\u0000 novel insights into the behavior of ions within detector settings,\u0000 significantly enhancing our comprehension of the mobility of ions\u0000 and its effects on radiation detection efficiency.","PeriodicalId":507814,"journal":{"name":"Journal of Instrumentation","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141281417","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

Enhancement of the DUNE FD1 X-ARAPUCA Photon Detection Efficiency and upgrade of the FD2 Photon Collector 提高 DUNE FD1 X-ARAPUCA 光子探测效率和升级 FD2 光子收集器

Journal of Instrumentation Pub Date : 2024-06-01 DOI: 10.1088/1748-0221/19/06/c06007

C.M. Cattadori

{"title":"Enhancement of the DUNE FD1 X-ARAPUCA Photon Detection Efficiency and upgrade of the FD2 Photon Collector","authors":"C.M. Cattadori","doi":"10.1088/1748-0221/19/06/c06007","DOIUrl":"https://doi.org/10.1088/1748-0221/19/06/c06007","url":null,"abstract":"\u0000 The Photon Detection System (PDS) of the first two DUNE far detectors (FD1 and FD2) is composed of 6000 and 672 photon detection units respectively, named X-Arapuca, of different size and geometry. The PDS will complement and boost the DUNE LArTPC for the detection of non beam events: the prompt light detection will improve their tagging, and at low energies it will enable the trigger and the calorimetry of the supernova neutrinos. The X-Arapuca unit is an assembly of several components: its Photon Detection Efficiency (PDE) depends both on the design of the assembly and on the grade and the coupling of the individual components. The X-Arapuca PDE is the driver of the Photon Detection System sensitivity, that in turn determines the sensitivity of the DUNE physics reach for the detection of core-collapse supernova within the galaxy and for nucleon decay searches. In this work we present an update of the absolute PDE of the FD1 X-Arapuca baseline design, measured in laboratory: 160 units of this are deployed in the scale 1:20 FD1 prototype hosted in the NP04 cryostat at the CERN neutrino platform. Further we show how to change the baseline design of the FD1 X-Arapuca, allowing to double its PDE. Finally we review a few selected features of the photon collector of the sixteen FD2 X-Arapuca recently deployed for the FD2 scale 1:20 prototype at CERN in the NP02 cryostat, and of the last six units that integrate the latest advancements.","PeriodicalId":507814,"journal":{"name":"Journal of Instrumentation","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141274964","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