A5059962324- Particle accelerators and beam dynamics
- Magnetic confinement fusion research
- Superconducting Materials and Applications
- Particle Accelerators and Free-Electron Lasers
- Gyrotron and Vacuum Electronics Research
- Fusion materials and technologies
- Microwave Engineering and Waveguides
- Fiber-reinforced polymer composites
- Plasma Diagnostics and Applications
- Catalytic Processes in Materials Science
- Plasma Applications and Diagnostics
- Zeolite Catalysis and Synthesis
- Advanced Antenna and Metasurface Technologies
- Dyeing and Modifying Textile Fibers
- Integrated Circuits and Semiconductor Failure Analysis
- Semiconductor Quantum Structures and Devices
- Catalysis and Hydrodesulfurization Studies
- Silicon and Solar Cell Technologies
- Material Properties and Applications
- Electron and X-Ray Spectroscopy Techniques
- Ion-surface interactions and analysis
- Antenna Design and Analysis
- Graphene research and applications
- Advancements in Battery Materials
- Diamond and Carbon-based Materials Research
General Atomics (United States)
2020-2024
Fermi National Accelerator Laboratory
2022
United States Air Force Research Laboratory
2008
Fraunhofer Society
1985
We present the technical and engineering design of a medium energy (10 MeV) high average power (1000 kW) electron-beam accelerator intended for irradiation treatment high-volume industrial municipal wastewater. The uses ${\mathrm{Nb}}_{3}\mathrm{Sn}$ superconducting radio-frequency (SRF) cavity producing beam with $>90%$ rf to efficiency. is tailored settings by adopting cryocooler conduction-cooling technique SRF instead conventional liquid helium bath cryosystem. supplemented detailed...
Helicon current drive (CD), also called fast wave CD in the lower hybrid range of frequencies, has long been regarded as a promising tool for reactor grade plasmas.A newly installed MW-level system at DIII-D will be first test this technology reactor-relevant plasmas, sense that full single-pass absorption is expected.A 30-module traveling antenna and optimized in-vessel early 2020.The linear electromagnetic characteristics unloaded module array have extensively tested both on bench vessel...
A high-level design study for a new experimental tokamak shows that advances in fusion science and engineering can be leveraged to narrow the gaps energy confinement exhaust power handling remain between present devices future pilot plant (FPP). This potential U.S. facility, an Exhaust Confinement Integration Tokamak Experiment (EXCITE), will access operational space close projected FPP performance regime via compact, high-field, high-power-density approach utilizes advanced scenarios...
Final design studies in preparation for manufacturing have been performed functional components of the vacuum portion ITER Low-Field Side Reflectometer (LFSR). These consist an antenna array, electron cyclotron heating (ECH) protection mirrors, phase calibration and windows. Evaluation these was conducted at LFSR test facility DIII-D. The array consists six corrugated-waveguide antennas simultaneous profile, fluctuation, Doppler measurements. A diffraction grating, incorporated into...
The research described in this paper continues that work by analyzing two four-element arrays of microstrip half-width leaky wave antennas different element lengths. experimental results are compared with calculations made using the commercial software CST Microwave Studio.
For a few years, aside from the printing of carpets and banners, ink jet technology has been used successfully for textiles. Compared with traditional textile process, market share using is not yet very important. However, study predicts strong growth within next years.What are requirements that to fulfill?The paper will describe main demands differences between known print - mainly on papers foils print.Different fibers applications automatically demand different pretreatment aftertreatment...
In this paper, we present an overview of the development two high power traveling wave antennas (TWAs) termed "comb-line" and "finline" for launching fast slow waves in plasmas. The comb-line antenna which has been deployed at DIII-D National Fusion Facility tokamak can couple megawatt (MW) level RF into plasma with <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$\sim$</tex> 2% reflected dissipated per array element its design frequency, 476...
High power gyrotrons typically produce RF in a ${HE}_{11}$ waveguide inside the vacuum. The direct coupler was Gaussian free-space mode. An internal converter transforms integrated into 110 GHz, 1 MW, short pulse gyrotron at MIT, whispering gallery mode from cavity to beam using shown Fig. 1. Tests indicated that produced quasi-optical launcher and series of mirrors. Transmission this same output efficiency as conventional requires transformation an corrugated waveguide. This conversion is...
power. Each of these developments has been individually proven and an effort is underway at the Illinois Accelerator Research Center Fermilab to integrate them into first prototype entirely new class industrial SRF-based accelerators. These accelerators will enable robust, turn-key operation with very high electrical efficiency. The accelerator under design be capable 10 MeV beam, CW operation, 250 kW electron beam modular systems are small enough palletized transported point use. Their...
High power gyrotrons typically produce RF in a Gaussian free-space mode. An internal converter transforms the whispering gallery mode from cavity to beam using quasi-optical launcher and series of mirrors. Transmission this requires transformation into an HE <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">11</inf> corrugated waveguide. This conversion is achieved Mirror Optical Unit, which uses second The then complexity structures, increasing...