Journal of the Optical Society of America and Review of Scientific Instruments最新文献_第7页

An ion-atom merged beams setup at the Cryogenic Storage Ring. 低温储存环上的离子-原子合并光束装置。

Journal of the Optical Society of America and Review of Scientific Instruments Pub Date : 2022-05-01 DOI: 10.1063/5.0086391

F. Grussie, A. O'Connor, M. Grieser, D. Müll, A. Znotins, X. Urbain, H. Kreckel

引用次数: 1

Absolute calibration of Fujifilm BAS-TR image plate response to laser driven protons up to 40 MeV. 富士胶片BAS-TR图像板对高达40 MeV的激光驱动质子响应的绝对校准。

Journal of the Optical Society of America and Review of Scientific Instruments Pub Date : 2022-05-01 DOI: 10.1063/5.0089402

P. Martin, H. Ahmed, D. Doria, A. Alejo, R. Clarke, S. Ferguson, J. Fernández-Tobias, R. Freeman, J. Fuchs, A. Green, J. Green, D. Gwynne, F. Hanton, J. Jarrett, D. Jung, K. Kakolee, A. Krygier, C. Lewis, A. McIlvenny, P. McKenna, J. Morrison, Z. Najmudin, K. Naughton, G. Nersisyan, P. Norreys, M. Notley, M. Roth, J. A. Ruiz, C. Scullion, M. Zepf, S. Zhai, M. Borghesi, S. Kar

{"title":"Absolute calibration of Fujifilm BAS-TR image plate response to laser driven protons up to 40 MeV.","authors":"P. Martin, H. Ahmed, D. Doria, A. Alejo, R. Clarke, S. Ferguson, J. Fernández-Tobias, R. Freeman, J. Fuchs, A. Green, J. Green, D. Gwynne, F. Hanton, J. Jarrett, D. Jung, K. Kakolee, A. Krygier, C. Lewis, A. McIlvenny, P. McKenna, J. Morrison, Z. Najmudin, K. Naughton, G. Nersisyan, P. Norreys, M. Notley, M. Roth, J. A. Ruiz, C. Scullion, M. Zepf, S. Zhai, M. Borghesi, S. Kar","doi":"10.1063/5.0089402","DOIUrl":"https://doi.org/10.1063/5.0089402","url":null,"abstract":"Image plates (IPs) are a popular detector in the field of laser driven ion acceleration, owing to their high dynamic range and reusability. An absolute calibration of these detectors to laser-driven protons in the routinely produced tens of MeV energy range is, therefore, essential. In this paper, the response of Fujifilm BAS-TR IPs to 1-40 MeV protons is calibrated by employing the detectors in high resolution Thomson parabola spectrometers in conjunction with a CR-39 nuclear track detector to determine absolute proton numbers. While CR-39 was placed in front of the image plate for lower energy protons, it was placed behind the image plate for energies above 10 MeV using suitable metal filters sandwiched between the image plate and CR-39 to select specific energies. The measured response agrees well with previously reported calibrations as well as standard models of IP response, providing, for the first time, an absolute calibration over a large range of proton energies of relevance to current experiments.","PeriodicalId":54761,"journal":{"name":"Journal of the Optical Society of America and Review of Scientific Instruments","volume":"1 1","pages":"053303"},"PeriodicalIF":0.0,"publicationDate":"2022-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85102727","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: 2

Identification and assessment method of cable joint health status based on traveling wave reflection. 基于行波反射的电缆接头健康状态识别与评估方法。

Journal of the Optical Society of America and Review of Scientific Instruments Pub Date : 2022-05-01 DOI: 10.1063/5.0085007

Feng Zhou, Fan Zhu, Qiang Lyu, Xingzhen Bai, Baochun Cui, Pengfei Wang

{"title":"Identification and assessment method of cable joint health status based on traveling wave reflection.","authors":"Feng Zhou, Fan Zhu, Qiang Lyu, Xingzhen Bai, Baochun Cui, Pengfei Wang","doi":"10.1063/5.0085007","DOIUrl":"https://doi.org/10.1063/5.0085007","url":null,"abstract":"Due to the difficulty in accurately detecting the health status of cable joints, a new method of identifying and assessing the cable joints' health status based on traveling wave reflection is proposed. By transmitting nanosecond pulse signals at the head end of the cable, the health status characteristics of the cable joints can be obtained, and the noise reduction of the measurement signals is performed by the wavelet function to identify the reflected wave at the joint and the end of the cable. The equivalent circuits and simulation models of contact resistance and leakage resistance are established, and the contact resistance and leakage resistance of the cable joints are calculated according to the amplitude and phase of the reflected signals at the joint and the end of the cable. By comparing with the resistance when the joint is in healthy operation, any measured parameter exceeding the corresponding standard is considered a joint fault. Simulations and test results show that the method can accurately identify the reflected signals of the cable joints in different operating states, and with changes in joint health, clear regular features can be extracted from the reflected signals, and the quality and health of the joints can be determined. The traveling wave method can be used to detect cable joint faults and provide an early warning of defects, which provides a new idea for online monitoring and early warning of cable joints in both theory and engineering practice.","PeriodicalId":54761,"journal":{"name":"Journal of the Optical Society of America and Review of Scientific Instruments","volume":"20 1","pages":"054703"},"PeriodicalIF":0.0,"publicationDate":"2022-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85282941","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

The design of a high-voltage, long-pulse width, flat-top compensation pulse generator based on metal oxide varistors. 设计了一种基于金属氧化物压敏电阻的高压、长脉宽平顶补偿脉冲发生器。

Journal of the Optical Society of America and Review of Scientific Instruments Pub Date : 2022-05-01 DOI: 10.1063/5.0071272

Hao Lu, Motao Zhang, Hanwu Yang, Huibo Zhang, Zicheng Zhang, Jingming Gao

{"title":"The design of a high-voltage, long-pulse width, flat-top compensation pulse generator based on metal oxide varistors.","authors":"Hao Lu, Motao Zhang, Hanwu Yang, Huibo Zhang, Zicheng Zhang, Jingming Gao","doi":"10.1063/5.0071272","DOIUrl":"https://doi.org/10.1063/5.0071272","url":null,"abstract":"In recent years, the pulse forming technology based on metal oxide varistors (MOVs) has been verified to be an effective way to generate high-voltage quasi-square pulses. Due to the limited varistor voltage of a single MOV brick, multiple MOV bricks connected in series are required to stabilize a pulse with high amplitude (larger than hundreds of kV), which leads to the rise of the series inductance of the MOV branch and the flat-top droop in the output waveform. This paper provides two solutions to reduce the influence of the MOV branch inductance on output waveforms. One is that a coaxial evolute structure of the MOV bricks connected in series is designed, which can not only improve the insulation capacity but also reduce the branch inductance. Another is that a flat-top compensation scheme named \"PFN-MOV\" (Pulse Forming Network) is proposed, which adds an LC filtering branch to shape the signal into a flat-top rising wave with ripple and then offsets the flat-top droop caused by the inductance of the MOV branch. Based on the above ideas, a high-voltage, long-pulse width, flat-top compensation pulse generator is designed and tested, and a quasi-square pulse with voltage amplitude of more than 500 kV, pulse width greater than 800 ns, rise time of less than 50 ns, and flat top of about 600 ns is obtained experimentally. This MOV based generator has the advantage of simple design, compact construction, and better flat top, which is promising to be used as a compact long-pulse driver in many fields, such as high-current accelerator, industrial dedusting, medical sterilization, and cancer treatment.","PeriodicalId":54761,"journal":{"name":"Journal of the Optical Society of America and Review of Scientific Instruments","volume":"3 1","pages":"054704"},"PeriodicalIF":0.0,"publicationDate":"2022-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91099366","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

Liver tumor ablation enhancement by induction-heating system with bitter-like deep magnetic field coil. 苦涩型深磁场线圈感应加热系统增强肝脏肿瘤消融。

Journal of the Optical Society of America and Review of Scientific Instruments Pub Date : 2022-05-01 DOI: 10.1063/5.0066308

Chia-Ming Hung, C.C. Tai

引用次数: 0

Investigation on behavior of the backpressure based piezoelectric energy harvester driven by compressed air. 压缩空气驱动背压型压电能量采集器的性能研究。

Journal of the Optical Society of America and Review of Scientific Instruments Pub Date : 2022-05-01 DOI: 10.1063/5.0086093

Yingting Wang, Zi Wang, Gang Bao

{"title":"Investigation on behavior of the backpressure based piezoelectric energy harvester driven by compressed air.","authors":"Yingting Wang, Zi Wang, Gang Bao","doi":"10.1063/5.0086093","DOIUrl":"https://doi.org/10.1063/5.0086093","url":null,"abstract":"A piezoelectric energy harvester with backpressure pre-loaded is designed to investigate the performance that can be driven by the compressed air load in the pneumatic system. The power generation principle and microelement mechanics model are established, which can explain the principle that backpressure changes the internal energy of materials. The backpressure affects the internal stress of materials. The electromechanical coupling coefficient can be adjusted by the backpressure. The power generation obviously changes as the electromechanical coupling coefficient is adjusted. An experimental testing system is established, and the experimental results are analyzed to prove the effect of backpressure on the output power. There is a linear relationship between the peak voltage and backpressure. When the backpressure increases every 1 kPa, the voltage increases by 0.667 V. The voltage increment under backpressure is 5.13 times that without backpressure. The optimal output power is 12.3 mW in 30 kPa backpressure pre-load. The output power increases to the original 237% under the backpressure. The prototype can directly supply energy to the temperature sensor, and it can supply power to a magnetic switch with capacitor energy storage.","PeriodicalId":54761,"journal":{"name":"Journal of the Optical Society of America and Review of Scientific Instruments","volume":"14 1","pages":"055003"},"PeriodicalIF":0.0,"publicationDate":"2022-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90830191","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: 1

Measurement of total electron emission yield of insulators based on self-terminating charge neutralization. 基于自终止电荷中和的绝缘子总电子发射产率测量。

Journal of the Optical Society of America and Review of Scientific Instruments Pub Date : 2022-05-01 DOI: 10.1063/5.0080414

Yahui Cai, Dan Wang, Kangcheng Qi, Yong-ning He

{"title":"Measurement of total electron emission yield of insulators based on self-terminating charge neutralization.","authors":"Yahui Cai, Dan Wang, Kangcheng Qi, Yong-ning He","doi":"10.1063/5.0080414","DOIUrl":"https://doi.org/10.1063/5.0080414","url":null,"abstract":"For insulators, the accumulated charge on the surface after electron bombardment will interfere with the total electron emission yield (TEEY) measurement. This work develops a novel method to automatically measure the TEEY of insulators based on self-terminating charge neutralization using two neutralization electron guns. We perform theoretical analysis and experimental design for the neutralization of positive and negative charges. Positive charges are neutralized by an electron gun whose cathode is equipotential to the sample. Negative charges are neutralized by another electron gun whose cathode is adjusted to a negative potential with respect to the grounded sample, which is set between EP1/e and EP2/e. We test the control and stability performance of the TEEY measurement system based on the timing design of the electron gun switching and believe that it meets the TEEY measurement requirements. The TEEY measurements of glass, Si, and SiO2 are in good agreement with the data reported in the references, which validates the accuracy of our method in this work. We anticipate that our method provides an essential reference for the rapid TEEY measurements of insulators.","PeriodicalId":54761,"journal":{"name":"Journal of the Optical Society of America and Review of Scientific Instruments","volume":"1 1","pages":"055103"},"PeriodicalIF":0.0,"publicationDate":"2022-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86057399","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: 5

A fast Tikhonov regularization method based on homotopic mapping for electrical resistance tomography. 基于同伦映射的电阻层析快速Tikhonov正则化方法。

Journal of the Optical Society of America and Review of Scientific Instruments Pub Date : 2022-04-01 DOI: 10.1063/5.0077483

Shouxiao Li, Huaxiang Wang, Tonghai Liu, Z. Cui, Joanna N. Chen, Zihan Xia, Qi Guo

引用次数: 2

Pinhole mirror-based ultra-small angle light scattering setup for simultaneous measurement of scattering and transmission. 基于针孔反射镜的超小角度光散射装置，用于同时测量散射和透射。

Journal of the Optical Society of America and Review of Scientific Instruments Pub Date : 2022-04-01 DOI: 10.1063/5.0086146

Samim Ali, Yimin Mao, V. Prabhu

{"title":"Pinhole mirror-based ultra-small angle light scattering setup for simultaneous measurement of scattering and transmission.","authors":"Samim Ali, Yimin Mao, V. Prabhu","doi":"10.1063/5.0086146","DOIUrl":"https://doi.org/10.1063/5.0086146","url":null,"abstract":"An ultra-small angle light scattering setup with the ability of simultaneous registration of scattered light by a charge-coupled device camera and the transmitted direct beam by a pin photodiode was developed. A pinhole mirror was used to reflect the scattered light; the transmitted direct beam was focused and passed through the central pinhole with a diameter of 500 μm. Time-resolved static light scattering measurement was carried out over the angular range 0.2° ≤θ≤ 8.9° with a time resolution of ∼33 ms. The measured scattering pattern in the q-range between 5 × 10-5 and 1.5 × 10-3 nm-1 enables investigating structures of few micrometers to submillimeter, where q is the scattering vector. A LabVIEW-based graphical user interface was developed, which integrates the data acquisition of the scattering pattern and the transmitted intensity. The Peltier temperature-controlled sample cells of varying thicknesses allow for a rapid temperature equilibration and minimization of multiple scattering. The spinodal decomposition for coacervation (phase separation) kinetics of an aqueous mixture of oppositely charged polyelectrolytes was demonstrated.","PeriodicalId":54761,"journal":{"name":"Journal of the Optical Society of America and Review of Scientific Instruments","volume":"16 1","pages":"044104"},"PeriodicalIF":0.0,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81861170","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: 3

Laser-frequency stabilization with differential single-beam saturated absorption spectroscopy of 4He atoms. 4He原子的差分单束饱和吸收光谱激光稳频。

Journal of the Optical Society of America and Review of Scientific Instruments Pub Date : 2022-04-01 DOI: 10.1063/5.0084605

Bowen Wang, Xiang Peng, Haidong Wang, Yang Liu, Hong Guo

{"title":"Laser-frequency stabilization with differential single-beam saturated absorption spectroscopy of 4He atoms.","authors":"Bowen Wang, Xiang Peng, Haidong Wang, Yang Liu, Hong Guo","doi":"10.1063/5.0084605","DOIUrl":"https://doi.org/10.1063/5.0084605","url":null,"abstract":"Differential single-beam saturated-absorption spectroscopy (DSSAS) is proposed to stabilize lasing frequency and suppress Doppler-broadened background and common-mode optical noise. The spectral first-derivative demodulated signal of metastable He4 atoms is used as an error signal to stabilize a fiber laser around 1083 nm. Experimental results show that, compared with existing non-DSSAS frequency stabilization, DSSAS stabilization produces better stability and lower fluctuations, especially for frequency-noise-corrupted lasers. In DSSAS stabilization, for data acquired over 7000 s, the root mean square frequency fluctuation of the fiber laser is 16.4 kHz, and the frequency stability described by the modified Allan deviation is 4.1 × 10-12 at 100 s. Even for a defective laser with poor frequency stability, the proposed scheme demonstrates experimentally high capability of noise suppression and reduces the frequency fluctuations by two orders of magnitude. Given its simplicity and compact design, frequency stabilization by DSSAS is promising for quantum-sensor applications, such as atomic magnetometers, atomic gyroscopes, and atomic clocks.","PeriodicalId":54761,"journal":{"name":"Journal of the Optical Society of America and Review of Scientific Instruments","volume":"24 1","pages":"043001"},"PeriodicalIF":0.0,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81136347","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