Journal of the Optical Society of America and Review of Scientific Instruments最新文献_第8页

Demonstration of plasma mirror capability for the OMEGA Extended Performance laser system. 欧米茄扩展性能激光系统的等离子体反射镜性能演示。

Journal of the Optical Society of America and Review of Scientific Instruments Pub Date : 2022-04-01 DOI: 10.1063/5.0067467

G. Scott, D. Mariscal, D. Canning, R. Heeter, M. Krieger, R. Wallace, C. McGuffey, J. Peebles, R. Simpson, C. Stoeckl, T. Ma

{"title":"Demonstration of plasma mirror capability for the OMEGA Extended Performance laser system.","authors":"G. Scott, D. Mariscal, D. Canning, R. Heeter, M. Krieger, R. Wallace, C. McGuffey, J. Peebles, R. Simpson, C. Stoeckl, T. Ma","doi":"10.1063/5.0067467","DOIUrl":"https://doi.org/10.1063/5.0067467","url":null,"abstract":"A plasma mirror platform was developed for the OMEGA-EP facility to redirect beams, thus enabling more flexible experimental configurations as well as a platform that can be used in the future to improve laser contrast. The plasma mirror reflected a short pulse focusing beam at 22.5° angle of incidence onto a 12.5 μm thick Cu foil, generating Bremsstrahlung and kα x rays, and accelerating ions and relativistic electrons. By measuring these secondary sources, the plasma mirror key performance metrics of integrated reflectivity and optical quality are inferred. It is shown that for a 5 ± 2 ps, 310 J laser pulse, the plasma mirror integrated reflectivity was 62 ± 13% at an operating fluence of 1670 J cm-2, and that the resultant short pulse driven particle acceleration and x-ray generation indicate that the on target intensity was 3.1 × 1018 W cm-2, which is indicative of a good post-plasma mirror interaction beam optical quality. By deriving the plasma mirror performance metrics from the secondary source scalings, it was simultaneously demonstrated that the plasma mirror is ready for adoption in short pulse particle acceleration and high energy photon generation experiments using the OMEGA-EP system.","PeriodicalId":54761,"journal":{"name":"Journal of the Optical Society of America and Review of Scientific Instruments","volume":"39 1","pages":"043006"},"PeriodicalIF":0.0,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89854553","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

4 ns dead time with a fully integrated active quenching circuit driving a custom single photon avalanche diode. 4 ns死区时间与一个完全集成的有源淬火电路驱动自定义单光子雪崩二极管。

Journal of the Optical Society of America and Review of Scientific Instruments Pub Date : 2022-04-01 DOI: 10.1063/5.0087341

A. Giudici, G. Acconcia, I. Labanca, M. Ghioni, I. Rech

引用次数: 1

Calorimeter with Bayesian unfolding of spectra of high-flux broadband x rays. 高通量宽带x射线光谱贝叶斯展开量热计。

Journal of the Optical Society of America and Review of Scientific Instruments Pub Date : 2022-04-01 DOI: 10.1063/5.0078443

A. Laso Garcia, A. Hannasch, M. Molodtsova, A. Ferrari, J. P. Couperus Cadabağ, M. Downer, A. Irman, S. Kraft, J. Metzkes-Ng, L. Naumann, I. Prencipe, U. Schramm, K. Zeil, R. Zgadzaj, T. Ziegler, T. Cowan

{"title":"Calorimeter with Bayesian unfolding of spectra of high-flux broadband x rays.","authors":"A. Laso Garcia, A. Hannasch, M. Molodtsova, A. Ferrari, J. P. Couperus Cadabağ, M. Downer, A. Irman, S. Kraft, J. Metzkes-Ng, L. Naumann, I. Prencipe, U. Schramm, K. Zeil, R. Zgadzaj, T. Ziegler, T. Cowan","doi":"10.1063/5.0078443","DOIUrl":"https://doi.org/10.1063/5.0078443","url":null,"abstract":"We report the development of a multipurpose differential x-ray calorimeter with a broad energy bandwidth. The absorber architecture is combined with a Bayesian unfolding algorithm to unfold high energy x-ray spectra generated in high-intensity laser-matter interactions. Particularly, we show how to extract absolute energy spectra and how our unfolding algorithm can reconstruct features not included in the initial guess. The performance of the calorimeter is evaluated via Monte Carlo generated data. The method accuracy to reconstruct electron temperatures from bremsstrahlung is shown to be 5% for electron temperatures from 1 to 50 MeV. We study bremsstrahlung generated in solid target interaction showing an electron temperature of 0.56 ± 0.04 MeV for a 700 μm Ti titanium target and 0.53 ± 0.03 MeV for a 50 μm target. We investigate bremsstrahlung from a target irradiated by laser-wakefield accelerated electrons showing an endpoint energy of 551 ± 5 MeV, inverse Compton generated x rays with a peak energy of 1.1 MeV, and calibrated radioactive sources. The total energy range covered by all these sources ranges from 10 keV to 551 MeV.","PeriodicalId":54761,"journal":{"name":"Journal of the Optical Society of America and Review of Scientific Instruments","volume":"10 1","pages":"043102"},"PeriodicalIF":0.0,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81864200","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

Transient abnormal signal acquisition system based on approximate entropy and sample entropy. 基于近似熵和样本熵的暂态异常信号采集系统。

Journal of the Optical Society of America and Review of Scientific Instruments Pub Date : 2022-04-01 DOI: 10.1063/5.0073423

Jun Jiang, Shulin Tian, Yu Tian, Yi Zhou, Cong Hu

引用次数: 1

A high voltage capacitance measurement method based on alternating coupled signal injection. 基于交变耦合信号注入的高压电容测量方法。

Journal of the Optical Society of America and Review of Scientific Instruments Pub Date : 2022-04-01 DOI: 10.1063/5.0085871

Pengcheng He, Yiping Liang, Wei Qi, L. Bai, Quanxin Zhou, J. Zhang

引用次数: 0

THz microscope for three-dimensional imaging with superconducting Josephson junctions. 用于超导约瑟夫森结三维成像的太赫兹显微镜。

Journal of the Optical Society of America and Review of Scientific Instruments Pub Date : 2022-04-01 DOI: 10.1063/5.0084207

M. Tollkühn, P. J. Ritter, M. Schilling, B. Hampel

{"title":"THz microscope for three-dimensional imaging with superconducting Josephson junctions.","authors":"M. Tollkühn, P. J. Ritter, M. Schilling, B. Hampel","doi":"10.1063/5.0084207","DOIUrl":"https://doi.org/10.1063/5.0084207","url":null,"abstract":"Superconducting Josephson junctions have a wide range of applications ranging from quantum computing to voltage standards, and they may also be employed as versatile sensors for high-frequency radiation and magnetic fields. In this work, we present a unique measurement setup utilizing a single Josephson junction on a cantilever for high-resolution spatial measurements of spectroscopically resolved THz and microwave field distributions. This THz microscope can be utilized to measure power and frequency of electromagnetic radiation from ∼1 GHz to 5 THz. It may also be used to measure static magnetic fields and provide topological scans of samples. The samples can be both actively radiating or passively irradiated at either room temperature or cryogenic temperatures. We review the measurement setup of the THz microscope and describe the evaluation of its measurement data to achieve three-dimensional visualizations of the field distributions. The diverse capabilities of this unique tool are demonstrated by its different measurement modes with measurements of field distributions at 20 GHz and 1.4 THz, spectroscopically resolved THz measurements, and magnetic field measurements.","PeriodicalId":54761,"journal":{"name":"Journal of the Optical Society of America and Review of Scientific Instruments","volume":"15 1","pages":"043708"},"PeriodicalIF":0.0,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86644804","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: 8

Design, development, and instrumentation of isopiestic experimental setup. 等静力实验装置的设计、开发及仪器。

Journal of the Optical Society of America and Review of Scientific Instruments Pub Date : 2022-04-01 DOI: 10.1063/5.0077715

S. S. Kumar, G. Prasad, J. P. Rao, V. Kumar, R. Ganesan, V. Jayaraman

引用次数: 1

Application of high precision wavelength calibration method for plasmas rotation measurement based on Fabry-Pérot etalon on experimental advanced superconducting tokamak. 基于fabry - p<s:1>标准子的等离子体旋转测量高精度波长校准方法在实验性先进超导托卡马克上的应用。

Journal of the Optical Society of America and Review of Scientific Instruments Pub Date : 2022-04-01 DOI: 10.1063/5.0083784

Shengyu Fu, Xianghui Yin, J. Fu, Yingying Li, Fudi Wang, Hongming Zhang, C. Bae, B. Lyu, Qianhong Huang, Yongcai Shen, Yichao Li, Liang He, Yifei Jin, X. Gong

{"title":"Application of high precision wavelength calibration method for plasmas rotation measurement based on Fabry-Pérot etalon on experimental advanced superconducting tokamak.","authors":"Shengyu Fu, Xianghui Yin, J. Fu, Yingying Li, Fudi Wang, Hongming Zhang, C. Bae, B. Lyu, Qianhong Huang, Yongcai Shen, Yichao Li, Liang He, Yifei Jin, X. Gong","doi":"10.1063/5.0083784","DOIUrl":"https://doi.org/10.1063/5.0083784","url":null,"abstract":"Analyzing the radiation spectra of impurity ions is a widely applied diagnostic scheme for plasma ion temperature and rotation measurements on tokamaks. High precision wavelength calibration is a prerequisite for the accurate measurement of plasma parameters, especially for plasma rotation. Furthermore, the sparseness or absence of the standard spectral lines brings calibration challenges due to the narrow wavelength range. A precise wavelength calibration method is demonstrated in which the comb-like spectra generated by the Fabry-Pérot etalon can lock a series of fixed peaks as reference points in a wide wavelength range. The equal frequency intervals of the comb-like spectra are further corrected using several characteristic neon lines of known wavelengths. The experimental results indicate that the wavelength accuracy obtained by this calibration method is less than 0.005 nm, which corresponds to a rotation speed of 2.3 km/s in the toroidal direction for the beam emission spectroscopy spectrometer installed on the experimental advanced superconducting tokamak. Taking the O V(650.024 nm, n = 4 → 3) line as an example, the maximum difference in the oxygen ion rotation velocity is 3.8 km/s for the absolute rotation of ∼25 km/s, when compared with the calibration results of a standard lamp.","PeriodicalId":54761,"journal":{"name":"Journal of the Optical Society of America and Review of Scientific Instruments","volume":"50 7 1","pages":"043504"},"PeriodicalIF":0.0,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91002121","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

Magnetic field influence analysis on the large-caliber steady-state magnetic field testing system. 磁场对大口径稳态磁场测试系统的影响分析。

Journal of the Optical Society of America and Review of Scientific Instruments Pub Date : 2022-04-01 DOI: 10.1063/5.0082972

Ya Huang, Li Jiang, H. Lei, G. Gao, Peng Wu, J. Zhang, Zhengyi Huang

引用次数: 1

Lost electron energy distribution of electron cyclotron resonance ion sources. 电子回旋共振离子源的损失电子能量分布。

Journal of the Optical Society of America and Review of Scientific Instruments Pub Date : 2022-04-01 DOI: 10.1063/5.0075464

I. Izotov, V. Skalyga, O. Tarvainen

引用次数: 1