A5107638996- Particle accelerators and beam dynamics
- Particle Accelerators and Free-Electron Lasers
- Muon and positron interactions and applications
- Superconducting Materials and Applications
- Gyrotron and Vacuum Electronics Research
- Magnetic confinement fusion research
- Neutrino Physics Research
- Particle physics theoretical and experimental studies
- Laser-Plasma Interactions and Diagnostics
- Particle Detector Development and Performance
- Photonic and Optical Devices
- Icing and De-icing Technologies
- Planetary Science and Exploration
- Vibration and Dynamic Analysis
- High voltage insulation and dielectric phenomena
- Atmospheric and Environmental Gas Dynamics
- Thermal Analysis in Power Transmission
- Advancements in Semiconductor Devices and Circuit Design
- Spectroscopy and Laser Applications
- Fluid Dynamics Simulations and Interactions
- Aerospace Engineering and Energy Systems
- Advanced Optical Sensing Technologies
- VLSI and Analog Circuit Testing
- Geophysics and Sensor Technology
- Adaptive optics and wavefront sensing
Thomas Jefferson National Accelerator Facility
2010-2025
Illinois Institute of Technology
2006
Fermi National Accelerator Laboratory
1987-2002
The maximum achievable beam current in an Energy Recovery Linac (ERL) is often constrained by Beam Breakup (BBU) instability. Our previous research highlighted that filling patterns have a substantial impact on BBU instabilities multi-pass ERLs. In this study, we extend our investigation to the 8-cavity model of Powerful ERL for Experiment (PERLE). We evaluate its requirements damping cavity Higher Order Modes (HOMs) and propose optimal bunch timing strategies. findings reveal significant...
This review paper describes the energy-upgraded Continuous Electron Beam Accelerator Facility (CEBAF) accelerator. superconducting linac has achieved 12 GeV beam energy by adding 11 new high-performance cryomodules containing 88 cavities that have operated cw at an average accelerating gradient of <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mrow><a:mn>20</a:mn><a:mtext> </a:mtext><a:mtext> </a:mtext><a:mi>MV</a:mi><a:mo>/</a:mo><a:mi...
Presently, there are two most frequently used parameterezations of linear x−y coupled motion in the accelerator physics. They Edwards-Teng and Mais-Ripken parameterizations. The article is devoted to an analysis close relationship between representations, thus adding a clarity their physical meaning. It also discusses eigen-vectors, beta-functions, second order moments bilinear form representing particle ellipsoid 4D phase space. Then, it consideres further development parameteresation where...
The nuSTORM facility has been designed to deliver beams of electron and muon neutrinos from the decay a stored beam with central momentum 3.8 GeV/c spread 10%. is unique in that it will: serve future long- short-baseline neutrino-oscillation programmes by providing definitive measurements electron-neutrino- muon-neutrino-nucleus cross sections percent-level precision; allow searches for sterile exquisite sensitivity be carried out; constitute essential first step incremental development...
Powerful ERL for experiments (PERLE) is a novel energy recovery linac (ERL) test facility [1], designed to validate choices 50 GeV foreseen in the design of Large Hadron Electron Collider and Future Circular host dedicated nuclear particle physics experiments. Its main goal demonstrate high current, continuous wave, multipass operation with superconducting cavities at 802 MHz. With very beam power (10 MW), PERLE offers an opportunity controllable study every dynamic effect interest next...
Recirculating linear accelerators (RLA's) provide a compact and efficient way of accelerating particle beams to medium high energies by reusing the same linac for multiple passes. In conventional scheme, after each pass, different energy coming out are separated directed into appropriate arcs recirculation, with pass requiring separate fixed-energy arc. this paper we present concept an RLA return arc based on combined-function magnets, in which two potentially more consecutive passes very...
A helical cooling channel (HCC) has been proposed to quickly reduce the six dimensional phase space of muon beams for colliders, neutrino factories, and intense sources. The HCC is composed solenoidal, dipole, quadrupole current coils provide focusing dispersion needed emittance exchange as beam follows an equilibrium orbit. Inside constituting examined here, a series RF cavities filled with dense hydrogen gas acts energy absorber ionization also suppressed breakdown. Two Monte Carlo...
We summarize the current state of a concept for muon acceleration aimed at future Neutrino Factory. The main thrust these studies was to reduce overall cost while maintaining performance by exploring interplay between complexity cooling systems and acceptance accelerator complex. To ensure adequate survival short-lived muons, must occur high average gradient. need large transverse longitudinal acceptances drives design system an initially low RF frequency, e.g., 325 MHz, which is then...
A simple nonlinear model of a coasting beam coupled to sharp storage-ring impedance is formulated in the framework quasilinear Vlasov equation. Nonperturbative analytic treatment equation allows us study time evolution single coherent mode (an azimuthal harmonic density driven by impedance) and overall uniform-density distribution function. In case Gaussian beam, this formalism simplifies pair equations motion which together with dispersion relation fully describe dynamics beam. Further...
A conceptual design of a high‐pass‐number Recirculating Linear Accelerator (RLA) for muons is presented. The scheme involves two superconducting linacs (200 MHz): single pass linear Pre‐accelerator followed by multi‐pass (7.5‐pass) ‘Dogbone’ RLA. Acceleration starts after ionization cooling at 273 MeV/c and proceeds to 32 GeV. captures large muon phase space accelerates relativistic energies, while adiabatically decreasing the phase‐space volume, so that effective acceleration in RLA...
New ideas are being developed to cool muon beams for colliders, neutrino factories, and experiments. Analytical simulation studies have confirmed that a six-dimensional (6D) cooling channel based on helical magnets surrounding RF cavities filled with dense hydrogen gas can be used achieve very small emittances. This (HCC) has solenoidal, dipole, quadrupole magnetic fields generate emittance exchange 6D reduction of over 3 orders magnitude in 100 m segment. Three such sequential HCC segments,...
A conceptual design of a muon acceleration scheme based on recirculating superconducting linacs is proposed. In the presented scenario, starts after ionization cooling at 245 MeV/c and proceeds to 20 GeV, where beam injected into neutrino factory storage ring. The key technical issues are addressed; such as: choice technology (superconducting versus normal conducting) RF frequency finally, implementation overall scheme: capture, acceleration, transport preservation large phase space fast...
A conceptual design of a high‐pass‐number Recirculating Linear Accelerator (RLA) for muons is presented. The scheme involves three superconducting linacs (201 MHz): single pass linear Pre‐accelerator followed by pair multi‐pass (4.5‐pass) 'Dogbone' RLAs. Acceleration starts after ionization cooling at 220 MeV/c and proceeds to 12.6 GeV. captures large muon phase space accelerates relativistic energies, while adiabatically decreasing the phase‐space volume, so that effective acceleration in...