Review of Scientific Instruments最新文献_第7页

Mechanical design of a parallel flexure-based RADSI instrument for curved x-ray mirror metrology. 弯曲x射线镜面测量用并联挠性RADSI仪器的机械设计。

IF 1.7 4区工程技术

Review of Scientific Instruments Pub Date : 2025-09-01 DOI: 10.1063/5.0278407

Lukas M Lienhard, Corey Austin, Weihe Xu, Mourad Idir, Steven Hulbert, Evgeny Nazaretski, D Scott Coburn, Tianyi Wang, Lei Huang

引用次数: 0

Erratum: "Development of a diamagnetic loop in KAIMIR" [Rev. Sci. Instrum. 95, 073501 (2024)]. 勘误：“KAIMIR中一个反磁回路的发展”[Sci.修订版]。仪器仪表。95,073501(2024)]。

IF 1.7 4区工程技术

Review of Scientific Instruments Pub Date : 2025-09-01 DOI: 10.1063/5.0293738

M Choe, D Oh, J G Bak, G W Baek, C Sung

引用次数: 0

High-resolution computed tomography of two-dimensional beam profile using dual-axis rotating wire. 使用双轴旋转导线的二维光束轮廓的高分辨率计算机断层扫描。

IF 1.7 4区工程技术

Review of Scientific Instruments Pub Date : 2025-09-01 DOI: 10.1063/5.0271359

R Ota, N Nakajima, R Takemasa, H Tamaru, Y Shiina, Y Nakano

引用次数: 0

Evaluation of imaging plate sensitivities to ion beams. 成像板对离子束灵敏度的评价。

IF 1.7 4区工程技术

Review of Scientific Instruments Pub Date : 2025-09-01 DOI: 10.1063/5.0273962

Yukio Hayashi, Michiaki Mori, Hideyuki Kotaki

引用次数: 0

A high-precision readout circuit for MEMS sensors operating across a wide temperature range. 一种高精度读出电路，用于在宽温度范围内工作的MEMS传感器。

IF 1.7 4区工程技术

Review of Scientific Instruments Pub Date : 2025-09-01 DOI: 10.1063/5.0256947

Xin Liu, Yinyu Liu, Quanfeng Zhou, Wei Su

{"title":"A high-precision readout circuit for MEMS sensors operating across a wide temperature range.","authors":"Xin Liu, Yinyu Liu, Quanfeng Zhou, Wei Su","doi":"10.1063/5.0256947","DOIUrl":"https://doi.org/10.1063/5.0256947","url":null,"abstract":"The detection of signals from Micro-Hemispherical Resonator Gyroscopes constitutes a crucial element of their control systems. This paper presents a fully differential transimpedance amplifier (TIA) designed for the detection of small currents in microsensors. The proposed amplifier features a two-stage architecture and allows for adjustable gain through manipulation of the feedback resistance value. To ensure performance across the full temperature range, we have developed a high-precision bandgap reference (BGR) that incorporates nonlinear term cancellation and multisectional curvature compensation techniques. The stable reference current provided by the BGR is critical for maintaining the accuracy of our readout circuits. The programmable gain amplifier is implemented using 180 nm Bipolar-CMOS-DMOS technology. The simulation results indicate that the proposed amplifier attains a high gain and provides flexible gain adjustment capabilities. Measurement results show that our proposed TIA achieves a capacitance resolution below 1 aF in gyroscope front-end readout applications and can operate normally within a temperature range of -40 to 65 °C.","PeriodicalId":21111,"journal":{"name":"Review of Scientific Instruments","volume":"96 9","pages":""},"PeriodicalIF":1.7,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145086951","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 microwave system for real-time, non-destructive moisture content measurement in agricultural bales. 一种用于实时、无损测量农业捆包水分含量的微波系统。

IF 1.7 4区工程技术

Review of Scientific Instruments Pub Date : 2025-09-01 DOI: 10.1063/5.0293047

D Cassanelli, S Cattini, L Rovati

{"title":"A microwave system for real-time, non-destructive moisture content measurement in agricultural bales.","authors":"D Cassanelli, S Cattini, L Rovati","doi":"10.1063/5.0293047","DOIUrl":"https://doi.org/10.1063/5.0293047","url":null,"abstract":"The estimation of moisture content (MC) in agricultural bales is crucial for ensuring product quality and preservation. However, current techniques, such as the drying method and hygrometers, are slow, destructive, or limited in sample representativeness. This work presents the Bale Attenuation Microwave Evaluation System (BAILS), an instrument for measuring microwave attenuation due to MC. BAILS allows a fast and non-destructive measurement directly in the field. The system operates at f = 2.44 GHz and analyzes the attenuated signal using a discrete Fourier transform-based algorithm. Experimental characterization of the prototype demonstrates its ability to detect MC variations in real samples and water solutions with different conductivities, showing a linear correlation between MC and attenuation. Tests on straw bales revealed high repeatability and a linear relationship between gravimetric moisture and measured attenuation, validating the proposed approach. BAILS enables fast, non-destructive, and full-bale moisture content monitoring directly in the field. Its robustness and repeatability, combined with its potential for integration with harvesting machinery, make it a promising tool for industrial-scale agriculture. It supports real-time quality control and efficient crop management.","PeriodicalId":21111,"journal":{"name":"Review of Scientific Instruments","volume":"96 9","pages":""},"PeriodicalIF":1.7,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145114158","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 wireless measuring instrument for hydroturbine axial alignment based on extreme value fast optimization. 基于极值快速优化的水轮机轴向无线测量仪。

IF 1.7 4区工程技术

Review of Scientific Instruments Pub Date : 2025-09-01 DOI: 10.1063/5.0272694

Ang Li, Yongfei Wang, Xiaofei Li, Pengxiang Liang, Junxian Zhu, Xi Wang

{"title":"The wireless measuring instrument for hydroturbine axial alignment based on extreme value fast optimization.","authors":"Ang Li, Yongfei Wang, Xiaofei Li, Pengxiang Liang, Junxian Zhu, Xi Wang","doi":"10.1063/5.0272694","DOIUrl":"https://doi.org/10.1063/5.0272694","url":null,"abstract":"To mitigate the challenges of inaccuracies and inefficiencies in manual alignment of hydroturbine shafts, a wireless measuring instrument for axial alignment based on extremum fast optimization is designed. The proposed method introduces three primary innovations. First, a wireless sensing and measurement system is established by strategically deploying grating displacement sensors and angular encoders at multiple critical locations, integrated with LoRa wireless transmission technology. This configuration enables 360° continuous data acquisition, effectively eliminating the constraints of traditional eight-point discrete measurement methods that require fixed-point positioning and manual coordination. Second, an enhanced simulated annealing (SA) extremum optimization algorithm is developed, incorporating an adaptive step-size perturbation model, a multi-stage annealing process with a restart mechanism, and a flexible temperature decay strategy. These improvements address the common shortcomings of conventional SA algorithms, such as fixed step sizes that cause local optimum trapping and slow convergence, thereby enabling precise and rapid identification of extremum points in axis deflection curves. Third, sinusoidal function fitting is employed for deflection curve analysis, which, when combined with the optimized algorithm, allows direct determination of the maximum deviation direction, replacing the traditional multi-iteration adjustment process. The axial alignment experiments are conducted on the hydroturbine axis prototype, and the results show that the swing values obtained from the designed measuring instrument are consistent with the traditional eight-point method, achieving 99.8% consistency and improving alignment efficiency by 400%. The extremum identification accuracy reaches 0.001 mm, demonstrating that the proposed method establishes a novel and highly effective paradigm for intelligent hydroturbine shaft alignment.","PeriodicalId":21111,"journal":{"name":"Review of Scientific Instruments","volume":"96 9","pages":""},"PeriodicalIF":1.7,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145065494","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

Calibration of a gated neutron time-of-flight spectrometer with low-afterglow. 低余辉门控中子飞行时间光谱仪的标定。

IF 1.7 4区工程技术

Review of Scientific Instruments Pub Date : 2025-09-01 DOI: 10.1063/5.0242176

X Su, P Zhou, J L Li, J F Ma, D W Yuan, Z Zhang, G Q Zhang, K N Li, P Chen, F Y Wu, X H Yuan, J Zhang

{"title":"Calibration of a gated neutron time-of-flight spectrometer with low-afterglow.","authors":"X Su, P Zhou, J L Li, J F Ma, D W Yuan, Z Zhang, G Q Zhang, K N Li, P Chen, F Y Wu, X H Yuan, J Zhang","doi":"10.1063/5.0242176","DOIUrl":"https://doi.org/10.1063/5.0242176","url":null,"abstract":"Neutron Time-of-Flight (nTOF) detectors are key diagnostics to detect thermonuclear neutrons in laser-fusion experiments. This diagnostic, however, is often plagued by strong gamma-ray noise prior to neutron signals, especially in harsh fast-ignition (FI) environments. To address this issue, a combination of low-afterglow liquid scintillators with time-gated photomultiplier tubes as necessary nTOF components would be a natural solution. However, the calibration of such detectors is challenging due to low detection efficiency and low neutron yield in FI experiments. In this paper, we propose a novel method to cross-calibrate a gated low-afterglow nTOF spectrometer using a pre-calibrated traditional non-gated nTOF spectrometer. This approach was demonstrated using neutrons from counter-streaming deuterated-polystyrene plasmas driven by the ShenGuang-II (SG-II) laser facility, with neutron yields ranging from 4 × 105 to 1 × 107. By implementing this calibration method, we anticipate a significant improvement in the accuracy of neutron detection within a 10% uncertainty for double-cone ignition experiments.","PeriodicalId":21111,"journal":{"name":"Review of Scientific Instruments","volume":"96 9","pages":""},"PeriodicalIF":1.7,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145024124","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 lanthanum bromide detector of runaway electrons for TCV. TCV失控电子的溴化镧检测器。

IF 1.7 4区工程技术

Review of Scientific Instruments Pub Date : 2025-09-01 DOI: 10.1063/5.0277312

L Simons, J Cerovsky, J Decker, B P Duval, O Ficker, M Hoppe, U Sheikh

{"title":"A lanthanum bromide detector of runaway electrons for TCV.","authors":"L Simons, J Cerovsky, J Decker, B P Duval, O Ficker, M Hoppe, U Sheikh","doi":"10.1063/5.0277312","DOIUrl":"https://doi.org/10.1063/5.0277312","url":null,"abstract":"The safe control and dissipation of Runaway Electrons (REs) generated in tokamak plasmas is vital for the operation of future fusion reactors. Measuring the evolution of RE energy in tokamaks is important for understanding their generation, transport, and termination. A new gamma ray spectrometer using a 2″ × 2″ cylindrical, cerium doped lanthanum bromide (LaBr3:Ce) scintillator coupled to a fast photomultiplier tube was developed for studying runaway electrons on the Tokamak à Configuration Variable (TCV). This diagnostic is capable of measuring the RE bremsstrahlung energy spectrum between 1 and 20 MeV with a peak height resolution of 1.91% at 1.44 MeV. A calibration of the detector using its self-emission up to 2.66 MeV was performed and modeled using Geant4. This model was then applied to predict the detector response to photons originating from TCV. The diagnostic was employed to measure the high energy Hard X-Ray (HXR) spectrum with energies in the range from 0.5 MeV to ∼8MeV on TCV for the first time. In TCV, the observations made with this system are demonstrated to provide insights into the change in RE energies during current ramps.","PeriodicalId":21111,"journal":{"name":"Review of Scientific Instruments","volume":"96 9","pages":""},"PeriodicalIF":1.7,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144993346","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 new neutron time-of-flight detector for yield and ion-temperature measurements in DT implosions on OMEGA. 用于测量欧米茄上DT内爆产率和离子温度的新型中子飞行时间探测器。

IF 1.7 4区工程技术

Review of Scientific Instruments Pub Date : 2025-09-01 DOI: 10.1063/5.0288867

A K Schwemmlein, C J Forrest, J P Knauer, H McClow, B Stanley, M H Romanofsky, C Stoeckl, M J Rosenberg, V Yu Glebov

{"title":"A new neutron time-of-flight detector for yield and ion-temperature measurements in DT implosions on OMEGA.","authors":"A K Schwemmlein, C J Forrest, J P Knauer, H McClow, B Stanley, M H Romanofsky, C Stoeckl, M J Rosenberg, V Yu Glebov","doi":"10.1063/5.0288867","DOIUrl":"https://doi.org/10.1063/5.0288867","url":null,"abstract":"A new neutron time-of-flight (nTOF) detector for yield and ion-temperature measurements in deuterium-tritium (DT) implosions was designed, installed, and calibrated on the OMEGA Laser System. This detector was installed at θ = 46.8° from the vertical and φ = 84.9°, previously a region without other detectors, in order to decrease the uncertainty of low-mode asymmetry measurements by six other nTOF detectors. The new nTOF detector uses the \"PMT only\" concept [Glebov et al., Rev. Sci. Instrum. 92, 013509 (2021)] and consists of a Photek photomultiplier tube (PMT)-110 in a thin aluminum housing. There is no lead shielding in front of the PMT to allow measurements of the x-ray instrument response function of the detector. The detector is installed in the OMEGA H2-port line of sight at 9.3 m from the target chamber center in the OMEGA Target Bay and is called the H2 nTOF detector. The H2 nTOF measures DT yields in the 1 × 1013 to 3 × 1014 range and ion temperatures from 2 to 12 keV. H2 nTOF reduced the hotspot flow uncertainty in the z-direction from ±10 to ±8 km/s, and the uncertainty in the anisotropic flow axis from σθ = ±26° to ±13° and σφ = ±25° to ±21°. The design details, performance, and calibration results of the H2 nTOF detector in DT implosions on OMEGA will be presented.","PeriodicalId":21111,"journal":{"name":"Review of Scientific Instruments","volume":"96 9","pages":""},"PeriodicalIF":1.7,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145041271","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