Journal of Instrumentation最新文献

An exploratory study of a tellurium-loaded liquid scintillator based on water and p-dioxane 基于水和对二氧六环的含碲液体闪烁体的探索性研究

4区工程技术

Journal of Instrumentation Pub Date : 2026-02-01 DOI: 10.1088/1748-0221/21/02/p02015

Ye Liang, Haozhe Sun, Zhe Wang

{"title":"An exploratory study of a tellurium-loaded liquid scintillator based on water and p-dioxane","authors":"Ye Liang, Haozhe Sun, Zhe Wang","doi":"10.1088/1748-0221/21/02/p02015","DOIUrl":"https://doi.org/10.1088/1748-0221/21/02/p02015","url":null,"abstract":"Abstract Tellurium-loaded liquid scintillators are critical for neutrinoless double-beta decay experiments. However, conventional organic scintillators are constrained by the limited solubility of organic tellurium compounds compared with that of inorganic ones in water, whereas water-based scintillators are likely constrained by the destabilization of surfactants caused by inorganic tellurium compounds. In this work, a surfactant-free water-containing route is explored, in which an aqueous telluric acid solution is introduced into a water-miscible organic scintillator comprising p-dioxane, naphthalene, and PPO. The phase behavior of this system is mapped to delineate homogeneous-mixture domains and to estimate practical upper bounds on tellurium loading. Optical properties are characterized by UV-visible absorption spectroscopy and fluorescence spectroscopy. The scintillation light yield is obtained with a relative method that compares to a reference LAB-PPO scintillator. The measurements demonstrate scintillation quenching induced by water and by telluric acid. These results provide benchmarks for water-containing and surfactant-free formulations and support the development of high-loading liquid scintillators for future detector design.","PeriodicalId":16184,"journal":{"name":"Journal of Instrumentation","volume":"21 02","pages":"P02015-P02015"},"PeriodicalIF":0.0,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147898402","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

Embedded EPICS server for PowerPMAC motion controllers. 用于PowerPMAC运动控制器的嵌入式EPICS服务器。

IF 1.4 4区工程技术

Journal of Instrumentation Pub Date : 2026-01-01 Epub Date: 2026-01-05 DOI: 10.1088/1748-0221/21/01/p01002

Oleg Makarov, Sergey Stepanov

引用次数: 0

Extending the time-over-threshold calibration of Timepix3 for spatial-resolved ion spectroscopy 扩展空间分辨离子光谱Timepix3时间超阈值定标

4区工程技术

Journal of Instrumentation Pub Date : 2025-05-01 DOI: 10.1088/1748-0221/20/05/p05040

R. E. Mihai, B. Bergmann, Petr Smolyanskiy

{"title":"Extending the time-over-threshold calibration of Timepix3 for spatial-resolved ion spectroscopy","authors":"R. E. Mihai, B. Bergmann, Petr Smolyanskiy","doi":"10.1088/1748-0221/20/05/p05040","DOIUrl":"https://doi.org/10.1088/1748-0221/20/05/p05040","url":null,"abstract":"Abstract Hybrid pixel detectors have a well-established array of applications ranging from particle physics to life sciences. The small dimensions of Timepix3 as well as its relatively low energetic expenses make it an intriguing option additionally for ion detection in nuclear physics experiments, as it reveals simultaneously precise temporal, spatial and energetic properties of recorded events from nuclear reactions. Currently, a limiting factor is the electronics behavior at high input charge resulting in improper energy determination of incident heavier ions. While the low-energy per-pixel calibration of Timepix3 is normally performed with the use of photons of up to 60 keV, the characteristic linear range permits a correct extrapolation up to only 150 keV/pixel. We developed a global per-pixel energy correction method involving the use of short-ranged accelerated ions and spectroscopic alpha sources, to suitably extend the energy determination capability of Timepix3 for nuclear ion spectroscopy experiments, where spatial and temporal precision of recorded events are equally crucial. It was found that upon applying this correction, the reliable per-pixel energy range has been increased from the original 150 keV to at least 1.1 MeV, while maintaining the relative energy resolution to better than 2.5% for stopped protons of up to 1.9 MeV and better than 3.1% for α-particles of 5.5 MeV. Furthermore, to demonstrate the spatial resolution of Timepix3 detectors with silicon sensors, we present α-radiography measurements from which we extract the modulation transfer function (MTF) and produce real-world biological sample images.","PeriodicalId":16184,"journal":{"name":"Journal of Instrumentation","volume":"20 05","pages":"P05040-P05040"},"PeriodicalIF":0.0,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147892062","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Evaluation of Timepix2 in adaptive gain mode for stopped and penetrating position-sensitive ion spectroscopy Timepix2在自适应增益模式下对停止和穿透位置敏感离子光谱的评价

4区工程技术

Journal of Instrumentation Pub Date : 2025-03-01 DOI: 10.1088/1748-0221/20/03/c03011

Petr Smolyanskiy, B. Bergmann, F. Bezerra, Petr Burian, Hugo Cintas, R. E. Mihai, Marta Rizzo

{"title":"Evaluation of Timepix2 in adaptive gain mode for stopped and penetrating position-sensitive ion spectroscopy","authors":"Petr Smolyanskiy, B. Bergmann, F. Bezerra, Petr Burian, Hugo Cintas, R. E. Mihai, Marta Rizzo","doi":"10.1088/1748-0221/20/03/c03011","DOIUrl":"https://doi.org/10.1088/1748-0221/20/03/c03011","url":null,"abstract":"Abstract We present the study of the response of a Timepix2 detector (256 × 256 pixels, pixel pitch 55 µm) with a 500 µm thick silicon sensor in laboratory measurements with α sources, charged particle beams of relativistic ion fragments at the Super-Proton-Synchrotron at CERN and in short-ranged heavy ion beams at the Heavy Ion Facility of UCLouvain in Belgium: 22 Ne, 53 Cr and 103 Rh of 238, 505 and 957 MeV, respectively. The Timepix2 detector was used in adaptive gain mode, and calibrated using previously developed methodology using protons with energies in the range from 500 keV to 2 MeV and α -particles of 5.5 MeV from 241 Am source prior to the testing. In a laboratory experiment, the detector was irradiated with α -particle from a 239 Pu 241 Am 244 Cm source. α -particles of higher energy (∼ 9 MeV) were obtained through a measurement of naturally occurring decays of radon and its daughters while the detector was left running in the laboratory for two weeks. In both cases, an energy resolution of 2% was achieved. In the stopped ion beam measurement, the proper ion energy determination was hindered by the per-pixel saturation of 3.2 MeV. Still, due to an increase of measured energy with increasing charge deposition, the different ion species were separable. In the last study, the dE/dX spectra were obtained in a mixed relativistic particle beam and used to evaluate the capability of determining the beam composition. The spectrum stripping technique using iterative Landau curve fitting was applied to the spectra allowing for ion charge determination up to Z = 13. The per-pixel saturation was mitigated by placing the detector at an angle of 70 degrees with respect to the sensor normal.","PeriodicalId":16184,"journal":{"name":"Journal of Instrumentation","volume":"20 03","pages":"C03011-C03011"},"PeriodicalIF":0.0,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://iopscience.iop.org/article/10.1088/1748-0221/20/03/C03011/pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147890684","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

A new method for calibrating sample-to-detector distance in small-angle X-ray scattering 小角度x射线散射中样品到探测器距离标定的新方法

4区工程技术

Journal of Instrumentation Pub Date : 2024-11-01 DOI: 10.1088/1748-0221/19/11/p11024

X. Ji, Rongchao Chen, Jiahao Liu, Xia Li, Haijuan Wu, Yuanyang Wang, Lili Dong, Jiangang Chen, Dongfeng Li, Zhihong Li

引用次数: 1

Automated characterisation and operational insights of superconducting travelling wave parametric amplifiers: unveiling novel behaviours and enhancing tunability 超导行波参数放大器的自动化表征和操作见解：揭示新行为和增强可调性

4区工程技术

Journal of Instrumentation Pub Date : 2024-08-01 DOI: 10.1088/1748-0221/19/08/p08024

Samuel Wood, Nikita Klimovich, Boon-Kok Tan

{"title":"Automated characterisation and operational insights of superconducting travelling wave parametric amplifiers: unveiling novel behaviours and enhancing tunability","authors":"Samuel Wood, Nikita Klimovich, Boon-Kok Tan","doi":"10.1088/1748-0221/19/08/p08024","DOIUrl":"https://doi.org/10.1088/1748-0221/19/08/p08024","url":null,"abstract":"Abstract Superconducting travelling wave parametric amplifiers (TWPAs) exhibit great promise across various applications, owing to their broadband nature, quantum-limited noise performance, and high-gain operation. Whilst their construction is relatively simple, particularly for thin-film-based TWPAs, challenges such as the requirement for an extremely long transmission line, current fabrication limitations, and their sensitivity to fabrication tolerances, mean that their optimal operating conditions often differ from those anticipated during the design stage. As a result, manual fine-tuning of numerous operational parameters becomes necessary to recover optimal performance; a process that is both labour-intensive and time-consuming. This paper introduces an automated methodology designed to significantly accelerate the characterisation of a TWPA by several orders of magnitude without requiring human intervention. Additionally, we have developed metrics to condense the multitude of measured frequency responses of the TWPA, obtained in data cube form, into an easily-understandable format for further scientific interpretation. To demonstrate the efficacy and speed of our methodology, we utilise an existing NbTiN (niobium titanium nitride) TWPA as an example. This showcases the capability of our approach to unveil both broad- and fine-scale behaviours of the device, highlighting the importance of an automated experimental setup for the in-depth investigation of TWPAs for future developments.","PeriodicalId":16184,"journal":{"name":"Journal of Instrumentation","volume":"19 08","pages":"P08024-P08024"},"PeriodicalIF":0.0,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147906873","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Construction and evaluation of a large radiation detector for Positron Emission Tomography applications. 为正电子发射断层扫描应用建造和评估大型辐射探测器。

IF 1.3 4区工程技术

Journal of Instrumentation Pub Date : 2024-04-01 Epub Date: 2024-04-26 DOI: 10.1088/1748-0221/19/04/p04034

R R Raylman, A V Stolin, G Jaliparthi, P F Martone

引用次数: 0

Data analysis methods and applications of the eddy current diagnostic system in the Keda Torus eXperiment device 数据分析方法和 Keda Torus eXperiment 设备中涡流诊断系统的应用

IF 1.3 4区工程技术

Journal of Instrumentation Pub Date : 2024-01-01 DOI: 10.1088/1748-0221/19/01/P01004

Zheng Chen, Zhen Tao, A. Yolbarsop, Hong Li, Yuan Zhang, Wentan Yan, Xianhao Rao, Shunrong Ren, Furen Tian, W. Mao, Zian Wei, Zixi Liu, Chu Zhou, A. Liu, Tao Lan, Jinlin Xie, Hai-ying Zhou, X. Wen, Hai Wang, Zhuang Ge, C. Xiao, Weixing Ding, Wandong Liu

{"title":"Data analysis methods and applications of the eddy current diagnostic system in the Keda Torus eXperiment device","authors":"Zheng Chen, Zhen Tao, A. Yolbarsop, Hong Li, Yuan Zhang, Wentan Yan, Xianhao Rao, Shunrong Ren, Furen Tian, W. Mao, Zian Wei, Zixi Liu, Chu Zhou, A. Liu, Tao Lan, Jinlin Xie, Hai-ying Zhou, X. Wen, Hai Wang, Zhuang Ge, C. Xiao, Weixing Ding, Wandong Liu","doi":"10.1088/1748-0221/19/01/P01004","DOIUrl":"https://doi.org/10.1088/1748-0221/19/01/P01004","url":null,"abstract":"Since the establishment of the eddy current diagnostic system within the Keda Torus eXperiment (KTX) device, it has unveiled many applications. Recent developments have introduced innovative data analysis techniques alongside compelling experimental results, underscoring the necessity for a comprehensive summary of the system's data analysis approaches and broad applications. Notable features of the system encompass exceptional precision, the ability to encompass shell currents on the entirety of the closed boundary, vector detection of shell currents, and measurement of diverse physical quantities. In terms of data analysis methodologies, meticulous scrutiny of the null field region is conducted, and we reveal a distinctive characteristic within the complex shell current signals, namely the asymmetry of the amplitudes of ±n Fourier coefficients. Moreover, the Hodge decomposition emerges as a pivotal technique, allowing for the distinctive separation of shell currents into three orthogonal components based on their distinct spatial topological properties. With regard to practical applications, an in-depth examination of the vector potential and magnetic helicity flux densities are presented in detail, further highlighting the far-reaching utility of the system's capabilities.","PeriodicalId":16184,"journal":{"name":"Journal of Instrumentation","volume":" 9","pages":""},"PeriodicalIF":1.3,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139393226","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

High-speed readout system of X-ray CMOS image sensor for time domain astronomy 用于时域天文学的 X 射线 CMOS 图像传感器高速读出系统

IF 1.3 4区工程技术

Journal of Instrumentation Pub Date : 2024-01-01 DOI: 10.1088/1748-0221/19/01/C01006

N. Ogino, M. Arimoto, T. Sawano, D. Yonetoku, Hsien-chieh Shen, Takanori Sakamoto, J. Hiraga, Y. Yatsu, Tatehiro Mihara

{"title":"High-speed readout system of X-ray CMOS image sensor for time domain astronomy","authors":"N. Ogino, M. Arimoto, T. Sawano, D. Yonetoku, Hsien-chieh Shen, Takanori Sakamoto, J. Hiraga, Y. Yatsu, Tatehiro Mihara","doi":"10.1088/1748-0221/19/01/C01006","DOIUrl":"https://doi.org/10.1088/1748-0221/19/01/C01006","url":null,"abstract":"We developed an FPGA-based high-speed readout system for a complementary metal-oxide-semiconductor (CMOS) image sensor to observe soft X-ray transients in future satellite missions, such as HiZ-GUNDAM. Our previous research revealed that the CMOS image sensor has low-energy X-ray detection capability (0.4–4 keV) and strong radiation tolerance, which satisfies the requirements of the HiZ-GUNDAM mission. However, CMOS sensors typically have small pixel sizes (e.g., ∼10 µm), resulting in large volumes of image data. GSENSE400BSI has 2048×2048 pixels, producing 6 Mbyte per frame. These large volumes of observed raw image data cannot be stored in a satellite bus system with a limited storage size. Therefore, only X-ray photon events must be extracted from the raw image data. Furthermore, the readout time of CMOS image sensors is approximately ten times faster than that of typical X-ray CCDs, requiring faster event extraction on a timescale of ∼0.1 s. To address these issues, we have developed an FPGA-based image signal processing system capable of high-speed X-ray event extraction onboard without storing raw image data. The developed compact system enabled mounting on a CubeSat mission, facilitating early in-orbit operation demonstration. Here, we present the design and results of the performance evaluation tests of the proposed FPGA-based readout system. Utilizing X-ray irradiation experiments, the results of the X-ray event extraction with the onboard and offline processing methods were consistent, validating the functionality of the proposed system.","PeriodicalId":16184,"journal":{"name":"Journal of Instrumentation","volume":" 3","pages":""},"PeriodicalIF":1.3,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139392578","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

Preliminary experimental results of tungsten wire calorimeter for CRAFT NNBI 用于 CRAFT NNBI 的钨丝热量计的初步实验结果

IF 1.3 4区工程技术

Journal of Instrumentation Pub Date : 2024-01-01 DOI: 10.1088/1748-0221/19/01/C01004

L. Yu, Y.Z. Xu, Y.J. Xu, X.B. Mou, L.P. Chen, X.F. Peng

{"title":"Preliminary experimental results of tungsten wire calorimeter for CRAFT NNBI","authors":"L. Yu, Y.Z. Xu, Y.J. Xu, X.B. Mou, L.P. Chen, X.F. Peng","doi":"10.1088/1748-0221/19/01/C01004","DOIUrl":"https://doi.org/10.1088/1748-0221/19/01/C01004","url":null,"abstract":"The comprehensive Research Facility for Fusion Technology(CRAFT) has been carried out since 2019 in China and as an important component of CRAFT, a negative ion-based neutral beam injection sysgem(NNBI) (200–400 keV, 2 MW) is under construction. In order to realize online diagnosis of beam uniformity, a tungsten wire calorimeter is developed. The tungsten wire calorimeter is characterized by double-layer tungsten wire mesh structure. During beam bombardment, the tungsten wire mesh is heated and emits light, a visible light camera is used to photograph the tungsten wire calorimeter. The beam profile is obtained by digitizing the light intensity distribution map. In this paper, through the thermal simulation anslysis of tungsten wire, the installation position of tungsten wire calorimeter are determined and the spatial resolution under different beam divergence are also analyzed.The tungsten wire calorimeter was tested on the beam source test platform, the light intensity distribution maps of the tungsten wire calorimeter under 15 keV–40 keV beam energy were obtained. The work above will accumulate experience for the operation of tungsten wire calorimeter for full scale beam source in the next stage, and provide technical means for the conditioning of negative beam sources.","PeriodicalId":16184,"journal":{"name":"Journal of Instrumentation","volume":"21 S7","pages":""},"PeriodicalIF":1.3,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139394997","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