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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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The Electron-Ion Collider (EIC) is being designed for construction at Brookhaven National Laboratory. Activities have been focused on beam-beam simulations, polarization studies, and beam dynamics, as well as on maturing the layout and lattice design of the constituent accelerators and the interaction region. The latest design advances will be presented.
Among the EIC?s numerous RF subsystems, the electron storage ring?s (ESR) 591 MHz fundamental RF system is one of the most challenging. Each cavity in the system will handle up to 2.5 A of beam current and supply up to 600 kW beam power under a wide range of voltage. The EIC R&D plan includes the design, fabrication and testing of such a cavity. In this paper, we will report the latest status and findings of the ongoing design and prototyping of this cavity, including the RF and mechanical/thermal design, fabrication design, and the progress of fabrication.
In this note we develop an approach to description of beam dynamics of electrons experiencing both strong non-linear focusing from the space charge of a hadron beam and the self-field effects.
Basic questions for radiation effects in electronics are addressed.
Among the EIC?s numerous RF subsystems, the electron storage ring?s (ESR) 591 MHz fundamental RF system is one of the most challenging. Each cavity in the system will handle up to 2.5 A of beam current and supply up to 600 kW beam power under a wide range of voltage. The EIC R&D plan includes the design, fabrication and testing of such a cavity. In this paper, we will report the latest status and findings of the ongoing design and prototyping of this cavity, including the RF and mechanical/thermal design, fabrication design, and the progress of fabrication.
Cooling of protons at top energy (γ = 293) to counteract the IBS driven emittance growth can be beneficial to the EIC performance. The Ring Electron Cooler provides such capability.
Electric energy behavior for ground state of one-electron heteronuclear diatomic molecule near united atom
Gravitational effect on free falling electrons in vacuum, showing gravitational induction of electric field outside metal surface
Electron-bremsstrahlung cross sections for thin targets of Al, Au, Cu, and Sn between 0.2 and 2.5 MeV
Electron bremsstrahlung produced in thick targets of Al, Au, Be, Fe, and Sn at incident energies between 0.2 and 2.8 MeV
Survey of electron beam and laser techniques applicable to spacecraft joining
Channel electron multipliers for cathode luminescent collection of topographic details
Electron-bremsstrahlung cross section measurements at incident energies of 0.2, 1.0, 1.7, and 2.5 MeV
Elastic scattering of slow electrons by negative H and positive Li ions, calculating differential cross sections and phase shifts
Temperature rise of micron sized silver particles on carbon film due to electron beam heating, setting up heat balance equation
Ion and electron contaminating currents removal in vacuum evaporating devices, using biased field plates
Energy spectrum of secondary electrons and fluorescent efficiency in 3914 A band, obtaining ionization cross section
Electron spin memory in optical pumping cycle of potassium halides F centers, measuring relaxed excited state g factors and spin resonance line widths