Control system of a high-power infrared free electron laser

The control system of the high power infrared FEL is built on the base of a two-level distributed system. The system includes the operator interface at the upper level and Input/Output Controllers under supervision of the real time operating system at the lower level. All hardware for the control system of the FEL is produced by our institute, which solves several problems of hard real time and reduces cost of equipment

First experimental results obtained using the highpower free electron laser at the siberian center for photochemical research

The first lasing near the wavelength of 140 µm was achieved in April 2003 using a high-power free electron laser (FEL) constructed at the Siberian Center for Photochemical Research. In this paper we briefly describe the design of the FEL driven by an accelerator–recuperator. Characteristics of the electron beam and terahertz laser radiation, obtained in the first experiments, are also presented in the paper.У Сибірському центрі фотохімічних досліджень навесні 2003 року отримана генерація випромінювання з довжиною хвилі 140 мкм на потужному лазері на вільних електронах (ЛВЕ). У роботі коротко описана конструкція ЛВЕ на базі прискорювача рекуператора і представлені результати вимірювання деяких параметрів електронного пучка і терагерцового випромінювання.В Сибирском центре фотохимических исследований весной 2003 года получена генерация излучения с длиной волны 140 мкм на мощном лазере на свободных электронах (ЛСЭ). В работе кратко описана конструкция ЛСЭ на базе ускорителя рекуператора и представлены результаты измерения некоторых параметров электронного пучка и терагерцового излучения

A Laser Refraction Analyzer for Eyesight Improvement

Laser refraction analyzers are shown to hold much promise for eyesight assessment and effective treatment of amblyopia, nystagmus, aphakia, visual fatigue, progressing myopia in children and adolescents, and strabismus. They can also be used for vision rehabilitation after work involving eye strain. © 2020, Springer Science+Business Media, LLC, part of Springer Nature

A Functional Line of Plasma Extractors

A competitive functional line of plasma extractors for blood service was developed using innovative technologies. The developed extractors can be used for preparation of blood components and blood-derived products. © 2021, Springer Science+Business Media, LLC, part of Springer Nature

An Automated System for Leukofiltration of Blood Components

An automated system for filtering blood transfusion media through special filters, monitoring and logging the filtration parameters, and processing filtration protocols is presented. The system can be used in blood banks and blood transfusion stations and departments. © 2022, Springer Science+Business Media, LLC, part of Springer Nature

Research of low noise pHEMT transistors in equipment for microwave radiometry using numerical simulation

The numerical impact modeling of some external effects on devices based on AlGAs/InGaAs/GaAs heterostructures (pHEMT) was carried out. The mathematical model was created that allowed to predict the behavior of the drain current depending on condition changes on the heterostructure in the barrier region and to start the process of directed construction optimization of the devices based on AlGaAs/InGaAs/GaAs pHEMT with the aim of improving their noise characteristic. © Published under licence by IOP Publishing Ltd

Increasing efficiency of GaN HEMT transistors in equipment for radiometry using numerical simulation

The numerical impact modeling of some external effects on devices based on AlGaN/GaN heterostructures (HEMT) was carried out. The mathematical model was created that allowed to predict the behavior of the drain current depending on condition changes in the heterostructure in the buffer region and to start the process of directed construction optimization of the devices based on AlGaN/GaN HEMT with the aim of improving their performances. © Published under licence by IOP Publishing Ltd

The improved algorithm for human body internal temperature calculating by multi-frequency radiothermography method

An improved algorithm for calculating the temperature and depth of a cancerous tumor in the depth of the human body by the method of multi-frequency multi-channel radiothermography is considered. An improved model is presented to describe the processes of receiving the human body's own radiothermal field by a multi-channel multi-frequency radiothermograph. The possibility of simultaneous calculation of temperature, the depth of the location under the skin and the size of the tumor is analyzed. The conditions for determining these values depending on the parameters of the tumor and the radiothermograph are investigated. The maximum possible depth of tumor detection is determined depending on the parameters of the radiothermograph and the thermal contrast in the source. The necessity of increasing the number of frequency ranges of the radiothermograph is justified. The results of calculating brightness temperatures at different depths of occurrence and tumor temperature are presented in the framework of an improved model. © 2022 Russian Academy of Natural Science. All rights reserved

A Conformal Medical Antenna Based on a Flexible Substrate

The results of studies of a conformal broadband applicator antenna for microwave radiothermometry based on a flexible substrate and textile technologies are presented. Grounds are given for the design and selection of structural materials for implementation of the antenna. Results obtained from calculation of the standing wave ratio (SWR), the measurement depth of the antenna, and the distribution of radiation power through the volume of the biological tissue are presented. The working frequency band of the textile antenna was 1400 MHz and the measurement depth for breast tissues was 40 mm