A5088645851- Particle accelerators and beam dynamics
- Particle Accelerators and Free-Electron Lasers
- Magnetic confinement fusion research
- Superconducting Materials and Applications
- Gyrotron and Vacuum Electronics Research
- Integrated Circuits and Semiconductor Failure Analysis
- Planetary Science and Exploration
- Optical Systems and Laser Technology
- Cold Atom Physics and Bose-Einstein Condensates
- Electromagnetic Simulation and Numerical Methods
- Radiation Therapy and Dosimetry
- Advanced Radiotherapy Techniques
- Quantum chaos and dynamical systems
- Numerical methods for differential equations
- Geotechnical and Geomechanical Engineering
- Plasma Diagnostics and Applications
- Advanced Surface Polishing Techniques
- Astronomical Observations and Instrumentation
- Pulsed Power Technology Applications
- Space Satellite Systems and Control
- Radiation Effects and Dosimetry
- Wireless Power Transfer Systems
University of Victoria
2019-2025
TRIUMF
2019-2024
Proton therapy presents an interesting and important challenge to accelerator physics. Practical restrictions such as room size, gantry weight, cost have led a demand for more compact affordable devices. Success would benefit significant number of patients every year. Dielectric wall accelerators could provide this breakthrough, but there is limited work available regarding their feasibility or possible integration into medical devices, no solutions exist longitudinal beam control. In work,...
To date, beam dynamics studies and design of combined zero degree drift tube linac (DTL) structures (Kombinierte Null Grad Struktur; KONUS) have only been carried out in multiparticle codes. Quantities such as the envelopes are obtained by averaging over particles, whose tracking is computationally intensive for large bunch populations. Tune computations, which depend on this average, burdensome to obtain. This has motivated implementation a simulation KONUS DTLs code transoptr, Hamiltonian...
Multigap cavities are used extensively in linear accelerators to achieve velocities up a few percent of the speed light, driving nuclear physics research around world. Unlike for single-gap structures, there is no closed-form expression calculate output beam parameters from cavity voltage and phase. To overcome this, we propose use method based on integration first second moments distribution through axially symmetric time-dependent fields cavity. A beam-based calibration between model's...
Application of the symplectic particle-in-cell algorithm proposed by H.~Qin {\it et al.} to space-charge in cyclotrons.
In this paper, we review three methods to construct symplectic and self-consistent multiparticle algorithms simulate space–charge effects in particle accelerators. The first method is based on a discrete Hamiltonian with an interaction term that depends explicitly the coordinates of macroparticles. second derives from Low’s Lagrangian for collisionless plasma. third corresponding Hamiltonian. last two have been mostly developed by plasma physics community, but are equally applicable...
A space charge algorithm is constructed that a hybrid between envelope and multiparticle models. The transverse dynamics simplified by tracking the of each macroparticle. equations motion are derived from Hamiltonian-fluid formulation Vlasov Poisson system. novel electrostatic self-field solver solves directly for self-consistent on-axis potential linear defocusing force, including longitudinal beam pipe boundary conditions. implementation algorithm, hyper3d, presented. It tested against...