Review of Scientific Instruments最新文献_第6页

Development of a triple-path, low-inductance, low-voltage spark gap switch. 三路、低电感、低压火花隙开关的研制。

IF 1.3 4区工程技术

Review of Scientific Instruments Pub Date : 2025-06-01 DOI: 10.1063/5.0257985

Wuhan Yuan, Yu Shen, Y C Francis Thio, Xiaohua Zhu, Guangyu Li, Chaochao Wu, Chunjing Hao, Chen Zhang, Yiheng Zhou, Fengfan Liang

{"title":"Development of a triple-path, low-inductance, low-voltage spark gap switch.","authors":"Wuhan Yuan, Yu Shen, Y C Francis Thio, Xiaohua Zhu, Guangyu Li, Chaochao Wu, Chunjing Hao, Chen Zhang, Yiheng Zhou, Fengfan Liang","doi":"10.1063/5.0257985","DOIUrl":"https://doi.org/10.1063/5.0257985","url":null,"abstract":"We report on the development and testing of a triple-path, low-inductance, low-voltage, high-current, field-distortion spark gap switch as one of the key technologies in developing the next-generation coaxial plasma gun for plasma jet driven magneto-inertial fusion. The gas chamber of the spark gap switch has been designed to harbor three electrically isolated, parallel electrical paths to achieve low inductance, while synchronization improvement is achieved through the use of radiation from the arc discharges when any of the gaps break down. Paschen's breakdown curve of the triple-path spark gap switch has been measured with gas pressure ranging from 0.1 to 2.5 BarG to validate the performance of the switch. The delay time and jitter of the spark gap switch have been measured on a dedicated switch test stand as well as in the single-shot plasma-gun-firing experiments at operating voltages of 5 kV and peak currents as high as 0.25 MA. The triple-path spark gap switches have demonstrated high stability and reproducibility in these experiments, with the jitter of the total current being 66 ns over 350 shots.","PeriodicalId":21111,"journal":{"name":"Review of Scientific Instruments","volume":"96 6","pages":""},"PeriodicalIF":1.3,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144326766","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

Seismic isolation of optical tables using piezo actuators. 采用压电致动器的光学台隔震。

IF 1.3 4区工程技术

Review of Scientific Instruments Pub Date : 2025-06-01 DOI: 10.1063/5.0254775

Tailong Wang, Carl Blair, Ammar Al-Jodah, John Winterflood, Jian Liu, Alexandra Adam, Aaron Goodwin-Jones, Chunnong Zhao, Li Ju

引用次数: 0

Phase-modulated injection seeding for testing laser-induced damage of thick optics with Q-switch lasers. 调相注入播种技术在厚光学器件激光损伤检测中的应用。

IF 1.3 4区工程技术

Review of Scientific Instruments Pub Date : 2025-06-01 DOI: 10.1063/5.0257868

Charles Bouyer, Roger Courchinoux, Thierry Donval, Nadja Roquin, Laurent Lamaignère

引用次数: 0

Fast and automated optical polarization compensation of fiber unitaries. 光纤单元机的快速自动光偏振补偿。

IF 1.3 4区工程技术

Review of Scientific Instruments Pub Date : 2025-06-01 DOI: 10.1063/5.0249996

Niklas Braband, Arman Mansouri, Riza Fazili, Stefanie Czischek, Jeff S Lundeen

引用次数: 0

Biomolecular ions generated by infrared laser desorption on microdroplets under vacuum. 真空条件下红外激光解吸微滴产生的生物分子离子。

IF 1.3 4区工程技术

Review of Scientific Instruments Pub Date : 2025-06-01 DOI: 10.1063/5.0248947

Ayoub Badri, Ali Beydoun, Rolando Lozada Garcia, Serge-Daniel Leite, Thi Nga Le, Manal Al Sahmarani, Charles Desfrançois, Gilles Grégoire, Frédéric Lecomte, Bruno Manil, Nicolas Nieuwjaer

{"title":"Biomolecular ions generated by infrared laser desorption on microdroplets under vacuum.","authors":"Ayoub Badri, Ali Beydoun, Rolando Lozada Garcia, Serge-Daniel Leite, Thi Nga Le, Manal Al Sahmarani, Charles Desfrançois, Gilles Grégoire, Frédéric Lecomte, Bruno Manil, Nicolas Nieuwjaer","doi":"10.1063/5.0248947","DOIUrl":"https://doi.org/10.1063/5.0248947","url":null,"abstract":"A droplet beam-laser ablation gas phase source has been developed for the isolation of biomolecular ions ejected from liquid microdroplets under vacuum. Liquid microdroplets containing the biomolecular ions of interest are generated in a primary vacuum chamber and passed through differential pumping stages to interact with an infrared laser pulse in a secondary vacuum chamber. Absorption of the infrared radiation by the solvent causes the explosion of the droplets and the desorption of biomolecular ions into vacuum. These ions are then mass-analyzed by a homemade time-of-flight spectrometer, either through a delayed extraction line or through coupling with a Paul trap. We show that this desorption source allows for the transfer of fragile molecules into the gas phase and preserves small non-covalent complexes. It can be operated in the positive and negative modes. Mass spectrometry analysis by the coupling of the source with a Paul trap allows us to get rid of the broad initial velocity distribution of the desorbed species subsequently to the laser ablation and leads to an improved mass resolution. This is a very promising setup for the production of hydrated biomolecules. It opens the way to the subsequent gas phase structural analysis of the desorbed biomolecular ions.","PeriodicalId":21111,"journal":{"name":"Review of Scientific Instruments","volume":"96 6","pages":""},"PeriodicalIF":1.3,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144226434","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 dynamic adaptive readout method for readout electronics of superconducting quantum computing. 超导量子计算读出电子学的动态自适应读出方法。

IF 1.3 4区工程技术

Review of Scientific Instruments Pub Date : 2025-06-01 DOI: 10.1063/5.0239413

Chenxi Chen, Yujie Zhao, Liwei Qiu, Yuchen Yang, Ziqi Wang, Xing Zhu, Zhongtao Shen, Shubin Liu

{"title":"A dynamic adaptive readout method for readout electronics of superconducting quantum computing.","authors":"Chenxi Chen, Yujie Zhao, Liwei Qiu, Yuchen Yang, Ziqi Wang, Xing Zhu, Zhongtao Shen, Shubin Liu","doi":"10.1063/5.0239413","DOIUrl":"https://doi.org/10.1063/5.0239413","url":null,"abstract":"Real-time control and readout are pivotal in superconducting quantum computing, given the imperative for numerous algorithms to perform quantum operations as much as possible within the qubit coherent time. Here, we specifically address the qubit readout, recognized as the most time-consuming operation within our experimental platform, and propose a dynamic adaptive readout method (DARM) to improve the performance of qubit readout. In contrast to a standard readout method (SRM) employing Gaussian Naïve Bayes as a discriminator, the DARM can demonstrate a 22.76% relative improvement on readout fidelity when the readout duration time of both methods is set to be consistent. Furthermore, the DARM can also terminate measurement pulse ahead with a 9.93% relative reduction of measurement pulse length on statistical average. The DARM is implemented on a field-programmable-gate-array-based system, and the electronic processing latency, from the digital processing unit getting the qubit signal to the valid output information, is 52 ns, which is only 4 ns longer than the SRM. Compared with the feedforward neural network readout method, the DARM can work in a pipeline mode with shorter electronic processing latency and lower electronic utilization.","PeriodicalId":21111,"journal":{"name":"Review of Scientific Instruments","volume":"96 6","pages":""},"PeriodicalIF":1.3,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144302778","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

Crack growth life assessment of the deep-sea manned cabin based on eddy current thermal imaging detection. 基于涡流热成像检测的深海载人舱室裂纹扩展寿命评估。

IF 1.3 4区工程技术

Review of Scientific Instruments Pub Date : 2025-06-01 DOI: 10.1063/5.0252121

Haixiong Ye, Shuai Wang, Tianli Tang, Yu Wu

引用次数: 0

Coupled Raman and temperature-programmed desorption for simultaneous analysis of structure and desorbed species from powder catalysts. 耦合拉曼和程序升温解吸同时分析粉末催化剂的结构和解吸物质。

IF 1.3 4区工程技术

Review of Scientific Instruments Pub Date : 2025-06-01 DOI: 10.1063/5.0260658

Yingjie Wang, Haoran Jia, Dali Tan, Xiaohui Feng, Kun Li, Rentao Mu, Yanxiao Ning, Guohui Zhang, Qiang Fu

{"title":"Coupled Raman and temperature-programmed desorption for simultaneous analysis of structure and desorbed species from powder catalysts.","authors":"Yingjie Wang, Haoran Jia, Dali Tan, Xiaohui Feng, Kun Li, Rentao Mu, Yanxiao Ning, Guohui Zhang, Qiang Fu","doi":"10.1063/5.0260658","DOIUrl":"https://doi.org/10.1063/5.0260658","url":null,"abstract":"Catalyst structure and surface chemistry are often studied separately, making it challenging to establish the structure-performance relationship under real reaction conditions. To address this, we develop a coupled Raman spectrometer and mass spectrometer system to enable simultaneous Raman and temperature-programmed desorption (TPD) analysis of powder catalysts under gaseous environments (1 × 10-8 to 1 × 103 mbar) and at temperatures from 100 to 1000 K with a linear heating rate up to 10 K s-1. This system minimizes re-adsorption effects in TPD analysis to ensure accurate measurement of desorption activation energies (ΔEdes), and furthermore, catalyst structure can be directly correlated with surface adsorbates based on the coupled Raman-TPD characterizations. Studies on D2 activation on ZnO reveal the role of oxygen vacancies in stabilizing D2 adsorption. In addition, spatially resolved TPD and Raman analyses of ZnO and ZnO/ZrO2 samples highlight the enhanced adsorption capacity and stability of H species on ZnO overlayers when confined on ZrO2 support.","PeriodicalId":21111,"journal":{"name":"Review of Scientific Instruments","volume":"96 6","pages":""},"PeriodicalIF":1.3,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144476463","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 infrared imaging video bolometer at Wendelstein 7-X. 温德尔斯坦7-X的红外成像视频测热仪。

IF 1.3 4区工程技术

Review of Scientific Instruments Pub Date : 2025-06-01 DOI: 10.1063/5.0261413

G Partesotti, G A Wurden, F Reimold, B J Peterson, F Federici, K Mukai, K A Siever, J von Miller, D Zhang, A Demby

{"title":"The infrared imaging video bolometer at Wendelstein 7-X.","authors":"G Partesotti, G A Wurden, F Reimold, B J Peterson, F Federici, K Mukai, K A Siever, J von Miller, D Zhang, A Demby","doi":"10.1063/5.0261413","DOIUrl":"https://doi.org/10.1063/5.0261413","url":null,"abstract":"The radiated power distribution is a crucial aspect of heat transport, heat load mitigation, and plasma exhaust performance. An imaging video bolometer camera has been installed to measure the plasma radiated power in the divertor region of the Wendelstein 7-X (W7-X) stellarator. This diagnostic offers a wide-angle (40° × 68°) sampling of the plasma volume in both the poloidal and toroidal directions. The field-of-view is covered with a large number (>500) of bolometer channels, providing imaging capability. The diagnostic design is introduced here together with its data analysis procedure. A set of laboratory experiments is performed to assess the thermal properties of the gold absorber foil and their spatial uniformity. Following installation, a heat source originating from the inertially cooled front of the diagnostic is identified and filtered out. The discharge data indicate a satisfactory signal-to-noise ratio as well as spatiotemporal resolution. These represent the first toroidally resolved images of the line-integrated radiated power in the W7-X island divertor. The diagnostic was then upgraded with a thinner platinum absorber and adjusted mirrors. Early data from the most recent experimental campaign employing the upgraded design show a considerable improvement in the diagnostic performance with more bolometer channels (>1400), extended coverage, and increased spatial resolution.","PeriodicalId":21111,"journal":{"name":"Review of Scientific Instruments","volume":"96 6","pages":""},"PeriodicalIF":1.3,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144234993","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

Cluster discharge resonance neuron model and its application in machinery multi-dimensional fault vibration signals. 簇放电共振神经元模型及其在机械多维故障振动信号中的应用。

IF 1.3 4区工程技术

Review of Scientific Instruments Pub Date : 2025-06-01 DOI: 10.1063/5.0265446

Shan Wang, Xinsheng Xu, Zijian Qiao, Pingjuan Niu, Jianen Chen, Xuwen Chen, Ruiqi Wu, Kailiang Zhang

{"title":"Cluster discharge resonance neuron model and its application in machinery multi-dimensional fault vibration signals.","authors":"Shan Wang, Xinsheng Xu, Zijian Qiao, Pingjuan Niu, Jianen Chen, Xuwen Chen, Ruiqi Wu, Kailiang Zhang","doi":"10.1063/5.0265446","DOIUrl":"https://doi.org/10.1063/5.0265446","url":null,"abstract":"Through the analysis of multidimensional vibration signals of machinery, existing faults in mechanical equipment can be timely identified to ensure normal equipment operation. In biological nervous systems, noise influences the generation, transmission, and response of neural signals, causing these signals to exhibit diverse dynamic behaviors. Inspired by this mechanism, to improve fault diagnosis accuracy, this study investigates the advantages of stochastic resonance effects in discharge neural networks and proposes an adaptive cluster discharge resonance neuron (CDRN) model. This model enhances characteristic frequency extraction capability for bearing fault vibration signals. In addition, by embedding a multi-dimensional neuron model into the CDRN framework, the limitation of one-dimensional signals being vulnerable to complex noise interference and false detection is overcome. Using the output signal-to-noise ratio and neural network classifier recognition rate as evaluation metrics, the detection performance of the CDRN method is compared with the single one-dimensional stochastic resonance (SOSR) method and the single hyperbolic tangent neuron (SHTN) method for early-stage mechanical fault detection in wind turbine bearing inner and outer rings. In the two experiments, the fault detection rate of the CDRN method reaches 100%. Experimental results demonstrate that the CDRN method outperforms both SOSR and SHTN in mechanical fault feature recognition and significantly improves early fault detection accuracy.","PeriodicalId":21111,"journal":{"name":"Review of Scientific Instruments","volume":"96 6","pages":""},"PeriodicalIF":1.3,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144258914","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