A5086760584- Gyrotron and Vacuum Electronics Research
- Particle accelerators and beam dynamics
- Particle Accelerators and Free-Electron Lasers
- Pulsed Power Technology Applications
- Electromagnetic Simulation and Numerical Methods
- Electromagnetic Scattering and Analysis
- Microwave Engineering and Waveguides
- Laser Design and Applications
- Advanced Antenna and Metasurface Technologies
- Solar and Space Plasma Dynamics
- Laser-Plasma Interactions and Diagnostics
- Photonic Crystals and Applications
- Tunneling and Rock Mechanics
- Electromagnetic Compatibility and Measurements
- Photonic and Optical Devices
- Underwater Acoustics Research
- Electron and X-Ray Spectroscopy Techniques
- Terahertz technology and applications
- Electric Power Systems and Control
- Diverse Industrial Engineering Technologies
- Medical Imaging Techniques and Applications
- Superconducting and THz Device Technology
- Metamaterials and Metasurfaces Applications
- Flow Measurement and Analysis
- Geological and Geochemical Analysis
ViewRay (United States)
2019-2023
RadiaBeam Technologies (United States)
2013-2021
Kostroma State Agricultural Academy
2020
Almaz-Antey (Russia)
2019
B.I. Stepanov Institute of Physics
2014
Rancho Research Institute
2000-2006
Dubna State University
2006
National Oceanic and Atmospheric Administration
2006
Zel Technologies (United States)
2003
P.N. Lebedev Physical Institute of the Russian Academy of Sciences
1997
Generation of a microsecond ribbon electron beam with strongly elongated cross section 4 cm×140 cm in magnetically insulated diode at 1 MV voltage and its transport the distance 2 m slit vacuum channel guiding magnetic field about T are described. High efficiency generation total energy 140 kJ is experimentally proven.
We report observations of an intense sub-THz radiation extracted from a ∼3 MeV electron beam with flat transverse profile propagating between two parallel oversized copper gratings side openings. Low-loss outcoupling is accomplished using horn antenna and miniature permanent magnet separating beams. A tabletop experiment utilizes radio frequency thermionic gun delivering thousand momentum-chirped microbunches per macropulse alpha-magnet movable scraper producing sub-mm microbunches. The...
High-energy electron cooling, presently considered as an essential tool for several applications in high-energy and nuclear physics, requires accurate description of the friction force which ions experience by passing through beam. Present low-energy coolers can be used a detailed study force. In addition, parameters cooler chosen manner to reproduce regimes expected future operation. Here, we report set dedicated experiments CELSIUS aimed at magnetized Some results comparison experimental...
The main goal of this work was to introduce simple model surface roughness which does not involve objects with complicated shapes and could help reduce computational costs. We described proved numerically that the influence at interfaces in metal-dielectric composite materials be by proper selection refractive index dielectric layers. Our calculations show works for RMS value about 1 nm below.
This paper presents the design, prototype engineering, and initial testing of a relatively low-voltage, high aspect ratio electron gun for versatile pulsed power applications. The sheet beam, diode is designed (23-25) kV voltage 6 µA/V1.5, as required x-band klystron, part compact Klylac delivering beam energy in MeV range. was engineered, built, tested using Scandinova M1-0.5 modulator. Beam loss on anode aperture evaluated from transient waveforms equivalent circuit modeling.
A coherent, mm-sub-mm-wave source driven by a RF electron gun is proposed for wide research applications as well auxiliary inspection and screening, safe imaging, cancer diagnostics, surface defectoscopy, enhanced time-domain spectroscopy. It allows generation of high peak average THz-sub-THz radiation power provided beam pre-bunching chirping in the followed microbunching magnetic compressor, resonant Cherenkov an essentially flat robust, ∼inch-long, planar, mm-sub-mm gap structure. The...
To improve public security and prevent the diversion of radioactive material for Radiation Dispersion Devices, development an inexpensive, portable, easy-to-manufacture linac system is very important. The bremsstrahlung X-rays produced by relativistic electron beam on a high-Z converter can mimic radiated from various sources. Here we consider two designs: one matching Ir-192 source used in radiography with ∼1-1.3 MeV electrons, another Cs137 using 3.5-4 electrons that be considered borehole...
Performance and design features of metal PBG rod‐loaded cavities for single‐beam multi‐beam acceleration rf power generation devices are considered. Fundamental differences the performance between single‐defect multi‐defect structures identified. Rod‐loaded cavity designs considered a 6‐beam klystron. Preliminary X‐band MBK demonstrates feasibility generating high with efficiency in very compact construction.
Synchronous wakefields in a dispersive waveguide are formulated general form. The fundamental role of group velocity wakefield propagation, calculation attenuation, amplitudes, form-factors and loss-factors is demonstrated for single-bunch multi-bunch train. Waveguide adiabatic tapering bunch density variations taken into account analytically the time-domain. Application this approach to an oversized pipe with small corrugations roughness discussed.
The basic feasibility of a proposal to simplify the conventional low energy rf electron linear accelerator (linac), is considered. design suggested foresees replacement traditional high power systems external generator and modulator by more passive switched storage system. proposed conception compact linac based on known compression techniques an efficient self-excited oscillation in special accelerating/oscillating structure. principal relations, performance estimations, one-dimensional...