Instruments and Experimental Techniques最新文献_第2页

Tunable Diode Laser with a Short Tandem External Cavity 带有短串联外腔的可调谐二极管激光器

IF 0.4 4区工程技术

Instruments and Experimental Techniques Pub Date : 2024-10-23 DOI: 10.1134/S0020441224700830

A. K. Chernyshov, P. A. Mikheyev

引用次数: 0

Regulated DC Sources for Powering Magnetic Systems of Microwave Generators Based on Supercapacitor Storages 用于为基于超级电容器储能器的微波发生器磁性系统供电的稳压直流电源

IF 0.4 4区工程技术

Instruments and Experimental Techniques Pub Date : 2024-10-23 DOI: 10.1134/S0020441224700684

P. V. Vykhodtsev, Yu. A. Karpov, A. S. Stepchenko, V.V. Rostov

{"title":"Regulated DC Sources for Powering Magnetic Systems of Microwave Generators Based on Supercapacitor Storages","authors":"P. V. Vykhodtsev, Yu. A. Karpov, A. S. Stepchenko, V.V. Rostov","doi":"10.1134/S0020441224700684","DOIUrl":"10.1134/S0020441224700684","url":null,"abstract":"The possibility of using modern energy-intensive storage devices based on supercapacitors in relation to the tasks of powering magnetic systems of high-power microwave generators based on a relativistic backward wave tube (BWT) is described. Magnetic systems of such generators consist of a two-section solenoid. During the operation of the generator, a current of up to 700 A flows through the windings of a solenoid for few seconds. The magnetic system is powered from a capacitive storage device based on supercapacitor modules through step-down current regulators. Current stabilization is carried out by increasing the duration of the open state of the switches as the storage device is discharged. The control system contains a microprocessor that controls the power switches of current regulators as well as the management of the drive charging processes and interaction with peripheral devices. The work presents all the necessary formulas for calculating the parameters of the current regulator and estimating the storage capacity and its energy characteristics. Also, two variations for the implementation of similar power supplies are presented: the maximum output power of the first one is 280 kW with an output current duration of up to 1.5 s, and the maximum output power of the second one is 90 kW with an output current duration of up to 2.5 s.","PeriodicalId":587,"journal":{"name":"Instruments and Experimental Techniques","volume":"67 3","pages":"471 - 483"},"PeriodicalIF":0.4,"publicationDate":"2024-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142518864","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

Nonlinear Control for Constraint-tuning Modified-mode Ultrasonic Actuating Linear Stage 约束调整修正模式超声波执行直线运动平台的非线性控制

IF 0.4 4区工程技术

Instruments and Experimental Techniques Pub Date : 2024-10-23 DOI: 10.1134/S0020441224700659

F.-L. Wen, M.-H. Lai, C.-P. Wen

{"title":"Nonlinear Control for Constraint-tuning Modified-mode Ultrasonic Actuating Linear Stage","authors":"F.-L. Wen, M.-H. Lai, C.-P. Wen","doi":"10.1134/S0020441224700659","DOIUrl":"10.1134/S0020441224700659","url":null,"abstract":"A proportional-integral-derivative-based (PID based) sliding mode control (SMC) was applied to the linear stage driven by a constraint-tuning modified-mode (CTMM) ultrasonic actuator. Based upon the driving variation of voltage amplitude and the preload on the CTMM ultrasonic actuator, nonlinear phenomena, such as frequencies shifting in electromechanical resonance and the dead zone in moving response, could be suppressed almost completely by the PID based SMC controller with output biases. Using system identification technique, an approximate second-order model of the linear stage could be obtained for the equivalent control term of the PID based SMC controller. Through an estimated model error, the design of the switching control term was used to compensate for the shifting property of resonant frequencies under electromechanical coupling. A target-command-shaping function matched the responding speed of the system during tracking experiments. Experimental results demonstrate that the SMC controller has the capacity for noise rejection to control the slider’s position in bilateral tracking motions. Its resolution is sufficient to approach micrometer-level accuracy.","PeriodicalId":587,"journal":{"name":"Instruments and Experimental Techniques","volume":"67 3","pages":"602 - 613"},"PeriodicalIF":0.4,"publicationDate":"2024-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142518622","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

Small Scale Emitter for an Excilamp with the Wavelength of 126 nm 波长为 126 纳米的小型激光灯发射器

IF 0.4 4区工程技术

Instruments and Experimental Techniques Pub Date : 2024-10-23 DOI: 10.1134/S0020441224700817

V. S. Skakun, V. F. Tarasenko, V. A. Panarin, D. A. Sorokin

引用次数: 0

Development of a High Granular TOF Neutron Detector for the BM@N Experiment 为 BM@N 实验开发高颗粒 TOF 中子探测器

IF 0.4 4区工程技术

Instruments and Experimental Techniques Pub Date : 2024-10-23 DOI: 10.1134/S0020441224700702

F. F. Guber, M. B. Golubeva, A. A. Zubankov, A. P. Ivashkin, A. V. Izvestnyy, N. M. Karpushkin, D. D. Lyapin, M. V. Mamaev, A. I. Makhnev, S. V. Morozov, P. E. Parfenov, D. V. Serebryakov, D. A. Finogeev, A. I. Shabanov

{"title":"Development of a High Granular TOF Neutron Detector for the BM@N Experiment","authors":"F. F. Guber, M. B. Golubeva, A. A. Zubankov, A. P. Ivashkin, A. V. Izvestnyy, N. M. Karpushkin, D. D. Lyapin, M. V. Mamaev, A. I. Makhnev, S. V. Morozov, P. E. Parfenov, D. V. Serebryakov, D. A. Finogeev, A. I. Shabanov","doi":"10.1134/S0020441224700702","DOIUrl":"10.1134/S0020441224700702","url":null,"abstract":"This article describes the design of the HGND detector (High Granular Neutron Detector) for measuring azimuthal neutron fluxes in the range from 300 to 4000 MeV as well as heavy ions formed in nucleus-nucleus collisions at energies up to 4 AGeV in the BM@N (Baryonic Matter at Nuclotron) experiment on the extracted beam of the JINR Nuclotron, Dubna. The detector consists of 16 layers of plastic scintillation detectors having a cellular structure with copper absorption plates between the layers. The results of measuring the time resolution of scintillation cells using silicon photodetectors are presented. The proposed electronics circuit for reading signals from scintillation cells is described. The results of modeling the acceptance of a neutron detector, the efficiency of neutron detection, the neutron energy resolution, and an estimate of the neutron count rates for the Bi + Bi reaction at an energy of 3 AGeV are presented.","PeriodicalId":587,"journal":{"name":"Instruments and Experimental Techniques","volume":"67 3","pages":"447 - 456"},"PeriodicalIF":0.4,"publicationDate":"2024-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142518517","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

Mitigating the Effect of Multipath on the Stability of Time Transfer Using GNSS 利用全球导航卫星系统减轻多径效应对时间传输稳定性的影响

IF 0.4 4区工程技术

Instruments and Experimental Techniques Pub Date : 2024-10-23 DOI: 10.1134/S0020441224700635

Gihan G. Hamza

{"title":"Mitigating the Effect of Multipath on the Stability of Time Transfer Using GNSS","authors":"Gihan G. Hamza","doi":"10.1134/S0020441224700635","DOIUrl":"10.1134/S0020441224700635","url":null,"abstract":"Coordinated Universal Time (UTC) is calculated using the time data of hundreds of remote atomic clocks. These time data are generated by comparing the atomic clocks to another standard clock through time transfer. One-way time transfer using the Global Navigation Satellite Systems (GNSS) is one of the most essential and widely used time transfer techniques. The stability of the transferred time may be degraded due to many phenomena that affect GNSS signals during their path from the transmitter to the receiver. Multipath reflections are one of these phenomena that considerably degrade one way time transfer stability. It is a common notion that the fewer multipath reflections there are, the better the time transfer stability will be. This can be achieved by limiting the reception of GPS signals to high elevation satellites. In this paper, the author studied the effect of satellite elevation on time transfer stability for both GPS and Galileo. The results of this study suggest that the old shape of the relation between the elevation mask and the time transfer stability may have changed. Therefore, the author proposed a new technique for mitigating the effect of multipath on time transfer stability. The proposed technique was applied to real timing data generated from the Golden receiver of the Physikalisch-technische Bundesanstalt (PTB), which is the German national metrology institute.","PeriodicalId":587,"journal":{"name":"Instruments and Experimental Techniques","volume":"67 3","pages":"578 - 586"},"PeriodicalIF":0.4,"publicationDate":"2024-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142518552","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

Electronics Unit for “Sun–Terahertz” Scientific Equipment 用于 "太阳-太赫兹 "科学设备的电子装置

IF 0.4 4区工程技术

Instruments and Experimental Techniques Pub Date : 2024-10-23 DOI: 10.1134/S0020441224700829

M. V. Philippov, V. S. Makhmutov, O. S. Maksumov, A. A. Kvashnin, A. N. Kvashnin, M. V. Razumeyko, V. I. Logachev, S. V. Mizin, S. V. Sokov

引用次数: 0

Time-of-Flight Spectroscopy of Hyperthermal Molecular Beams of Alkali and Alkaline Earth Metal Halides 碱金属和碱土金属卤化物超热分子束的飞行时间光谱学

IF 0.4 4区工程技术

Instruments and Experimental Techniques Pub Date : 2024-10-23 DOI: 10.1134/S0020441224700660

V. M. Azriel’, V. M. Akimov, E. V. Ermolova, D. B. Kabanov, L. I. Kolesnikova, L. Yu. Rusin, M. B. Sevryuk

引用次数: 0

Optimization of the Transient Characteristics of the Rectifiers under High-Energy Electron Irradiation 优化整流器在高能电子辐照下的瞬态特性

IF 0.4 4区工程技术

Instruments and Experimental Techniques Pub Date : 2024-10-23 DOI: 10.1134/S0020441224700866

I. V. Schemerov, P. B. Lagov, S. P. Kobeleva, V. D. Kirilov, A. S. Drenin, A. A. Mescheryakov

{"title":"Optimization of the Transient Characteristics of the Rectifiers under High-Energy Electron Irradiation","authors":"I. V. Schemerov, P. B. Lagov, S. P. Kobeleva, V. D. Kirilov, A. S. Drenin, A. A. Mescheryakov","doi":"10.1134/S0020441224700866","DOIUrl":"10.1134/S0020441224700866","url":null,"abstract":"It is shown that capacitance–frequency characterization can help to derive the optimization limits for radiation optimization of the transient properties of the rectifiers. Measurements of the current–voltage, capacitance–voltage, capacitance–frequency characteristics, and reverse recovery profiling were provided for silicon-based rectifiers. p–n-junction rectifiers were irradiated by 5 MeV electrons with fluences from 1014 to 1015 cm–2. It is shown that reverse-recovery time decreases after 5 MeV electron irradiation and this decreasing changes monotonously with irradiation dose (from 2.2 ms to 15 µs for 1015 cm–2). At the same time, series resistance increases dramatically (from 0.5 to 90 Ω); it indicates strong degradation of the high-frequency properties. Next criteria for optimal radiation dose can be used: the irradiation level associated with the maximum of boundary frequency indicates the optimum in terms of switching speed. Before this dose, maximum frequency is limited by reverse-recovery time of diode. After this dose, the limiting factor is the relaxation time of RC-circuit, where R is the series resistance of the diode and C is the capacitance of the SRC-region.","PeriodicalId":587,"journal":{"name":"Instruments and Experimental Techniques","volume":"67 3","pages":"587 - 592"},"PeriodicalIF":0.4,"publicationDate":"2024-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142518623","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

Facility for Registration of Deformation-Stimulated Luminescence of Crystals 晶体形变激发发光注册设备

IF 0.4 4区工程技术

Instruments and Experimental Techniques Pub Date : 2024-10-23 DOI: 10.1134/S0020441224700854

K. Sh. Shunkeyev, D. M. Sergeyev, Sh. Zh. Sagimbayeva, Zh. K. Ubaev, A. E. German, A. Yu. Litskevich

引用次数: 0