A5066821476- Particle accelerators and beam dynamics
- Particle Accelerators and Free-Electron Lasers
- Superconducting Materials and Applications
- Gyrotron and Vacuum Electronics Research
- Magnetic confinement fusion research
- Particle Detector Development and Performance
- Plasma Diagnostics and Applications
- Electron and X-Ray Spectroscopy Techniques
- Physics of Superconductivity and Magnetism
- Superconducting and THz Device Technology
- Advancements in Photolithography Techniques
- Electrostatic Discharge in Electronics
- Radiation Effects in Electronics
- Fusion materials and technologies
- Atomic and Subatomic Physics Research
- Spacecraft and Cryogenic Technologies
- Advanced Data Storage Technologies
- Advanced Radiotherapy Techniques
- Advanced Thermodynamic Systems and Engines
- Pulsed Power Technology Applications
- Advanced MEMS and NEMS Technologies
- Laser and Thermal Forming Techniques
- Acoustic Wave Resonator Technologies
- Calibration and Measurement Techniques
- Photosynthetic Processes and Mechanisms
Brookhaven National Laboratory
2020-2024
Brookhaven College
2023
Argonne National Laboratory
2006-2020
Abstract Quantum computers (QC), if realized, could disrupt many computationally intense fields of science. The building block element a QC is quantum bit (qubit). Qubits enable the use superposition and multi-state entanglement in calculations, allowing to simultaneously perform millions computations at once. However, states stored qubit degrade with decreased quality factors interactions environment. One technical solution improve lifetimes network circuit comprised Josephson...
The next high-current Electron-Ion Collider (EIC) is a new accelerator to be built at Brookhaven National Laboratory in collaboration with Thomas Jefferson Accelerator Facility. In the EIC Electron Storage Ring (ESR), there will beam currents of up 2.5 A, which excite massive higher-order-mode (HOM) power 17 single-cell 591 MHz superconducting radio-frequency (SRF) cavities. Damping HOM ESR SRF cavities challenge. A room temperature cylindrical shell shape silicon carbide (SiC) beamline...
Superconducting accelerator cavities are now routinely operated at levels approaching the theoretical limit of niobium. To achieve these operating more information than is available from RF excitation signal required to characterize and determine fixes for sources performance limitations. This obtained using diagnostic techniques which complement analysis signal. In this paper we describe operation select results three techniques: use large scale thermometer arrays, second sound wave defect...
Accelerator cryomodules reduce the radiative thermal load to 1.8 – 4.5 K components by enclosing them within low-emissivity shields cooled 70–100 K. These heat are not continuous and have many penetrations, or holes, allow for connection of support structures subsystems running from room temperature. The penetrations baffles reduce, eliminate if possible, direct line-of-sight between temperature lower but leave many, low emissivity, paths with only a single reflection required photons strike...
This paper reports results of cold tests a 345 MHz, three-spoke-loaded TEM-class superconducting niobium cavity being developed for the RIA driver linac and other high-intensity ion applications. The has beam aperture 4 cm diameter, an interior length 67 cm, transit-time factor peaks at = v/c 0.5. In 4.2 k, could be operated cw above nominal design accelerating gradient 9.9 MV/m, which corresponds to peak surface fields 27.5 MV/m electric 850 gauss magnetic. At this provides more than 6 MV...
Present superconducting accelerators require a central refrigeration system and piping to distribute liquid helium nitrogen. Stand-alone cryocooler-based systems are of significant interest both scientific industrial customers, as they allow applications at facilities where no cryogenic equipment expertise exists, it is undesirable develop additional systems, or mobile that can be transported between beamlines required. The technical challenge this approach minimize the heat losses so...
This paper reports the successful fabrication and test results of a novel 2815 MHz superconducting deflecting cavity operating in TE-mode trapped quasiwaveguide structure with extremely high shunt impedance. The waveguide this allows for free propagation all higher order modes (HOMs) out via beam ports, eliminating need HOM dampers inside when operated current. absence greatly simplifies operation at cryogenic temperatures. its impedance is ideal spatial rotation short bunches small physical...