A5035137607- Particle accelerators and beam dynamics
- Gyrotron and Vacuum Electronics Research
- Particle Accelerators and Free-Electron Lasers
- Superconducting Materials and Applications
- Pulsed Power Technology Applications
- Laser-Plasma Interactions and Diagnostics
- Particle Detector Development and Performance
- Microwave Engineering and Waveguides
- Plasma Diagnostics and Applications
- Muon and positron interactions and applications
- Terahertz technology and applications
- Radiation Detection and Scintillator Technologies
- Nuclear Physics and Applications
- Neutrino Physics Research
- Photocathodes and Microchannel Plates
- Astrophysics and Cosmic Phenomena
- Atomic and Subatomic Physics Research
- Magnetic confinement fusion research
- Photonic and Optical Devices
- Laser Design and Applications
- Wireless Power Transfer Systems
- Superconducting and THz Device Technology
- Acoustic Wave Resonator Technologies
- Ammonia Synthesis and Nitrogen Reduction
- Radiation Therapy and Dosimetry
Muons (United States)
2013-2024
Thomas Jefferson National Accelerator Facility
2022-2024
Fermi National Accelerator Laboratory
2005-2024
Newport News Public Library System
2024
Fermi Research Alliance
2006-2022
Institute of Chemical Kinetics and Combustion
2015
Euclid Techlabs (United States)
2015
TechLab (United States)
2015
Budker Institute of Nuclear Physics
2005-2011
Yale University
2010
We report on an experimental demonstration of electron cooling high-energy antiprotons circulating in a storage ring. In our experiments, cooling, well-established method at low energies ($<500\text{ }\text{ }\mathrm{MeV}/\mathrm{\text{nucleon}}$), was carried out new region beam parameters, requiring multi-MeV dc and unusual transport line. this Letter, we present the results longitudinal force measurements compare them with theoretical predictions.
Focusing of a 15 MeV electron bunch by plasma lens operated at the threshold underdense regime has been demonstrated. The strong, 1.7 cm focal length, focused both transverse directions simultaneously and reduced minimum area beam spot factor 23. It is shown through analytic analysis simulation that observed spherical aberration this lens, when expressed as fractional departure focusing strength from its linear expectation, ΔK/K=0.08±0.04. This significantly lower than theoretical value for...
A magnetron-driven microtron injector has been developed for a terahertz free electron laser (FEL). An internal injection system was chosen the to achieve compact and inexpensive design. The provides acceleration of electrons with low emittance energy spread that is highly important FEL. However, intrapulse instabilities accelerated current bunch repetition rate inherent make problems FEL operation. Simulations beam dynamics transient process allow one compute load characteristic...
CW magnetrons, initially developed for industrial RF heaters, were suggested to power cavities of superconducting accelerators due their higher efficiency and lower cost than traditionally used klystrons, IOTs or solid-state amplifiers. amplifiers driven by a master oscillator serve as coherent sources. magnetrons are regenerative generators with huge gain. This causes instability large noise when magnetron operates the anode voltage above threshold self-excitation. Traditionally...
On forced RF generation of CW magnetrons for superconducting acceleratorsHigh power magnetrons, designed and optimized industrial heaters, were suggested to Superconducting cavities due their higher efficiency lower cost per Watt comparing klystrons, IOTs or solid-state amplifiers.RF amplifiers driven by a master oscillator serve as controllable coherent sources.CW are regenerative generators with huge gain.Very large gain causes instability noise when magnetron operates the anode voltage...
A simplified analytical model of the resonant interaction beam Larmor electrons drifting in crossed constant fields a magnetron with synchronous wave providing phase grouping charge was developed to optimize parameters an rf injected signal driving magnetrons for management and power sources rate required superconducting high-current accelerators. The model, which considers impact into on operation injection-locked tube, substantiates recently method fast control range up 10 dB at highest...
A terahertz free electron laser (FEL) driven by a high-current classical S-band 12-orbit microtron with internal injection and magnetron-based radio frequency system has been developed. The laboratory-size, inexpensive facility is widely tunable in the range. This makes it attractive for application research laboratories universities. Stability reliability operation of such microtron-based FEL determined generally system. Operation employing thermionic cathode analyzed. analysis was...
A model of the CW high-power transmitter, utilizing frequency-locked magnetrons with a phase control studied initially as prototype controllable in and power an RF source for intensity-frontier superconducting linacs, was considered telecommunication magnetron source, acceptable wideband phase-amplitude modulation at precisely stable carrier frequency. The R&D conducted CW, 2.45 GHz, 1 kW, microwave oven demonstrated that frequency locking by phase-modulated signal provides amplitude...