R. Baartman
A5013486536- Particle accelerators and beam dynamics
- Particle Accelerators and Free-Electron Lasers
- Nuclear Physics and Applications
- Magnetic confinement fusion research
- Superconducting Materials and Applications
- Plasma Diagnostics and Applications
- Muon and positron interactions and applications
- Gyrotron and Vacuum Electronics Research
- Atomic and Molecular Physics
- Nuclear physics research studies
- Atomic and Subatomic Physics Research
- Mass Spectrometry Techniques and Applications
- Radiation Therapy and Dosimetry
- Photocathodes and Microchannel Plates
- Radiation Detection and Scintillator Technologies
- Laser-Plasma Interactions and Diagnostics
- Dark Matter and Cosmic Phenomena
- Advanced NMR Techniques and Applications
- Magnetic properties of thin films
- Radio Astronomy Observations and Technology
- Particle Detector Development and Performance
- Electron and X-Ray Spectroscopy Techniques
- Particle physics theoretical and experimental studies
- Metal Forming Simulation Techniques
- Silicon and Solar Cell Technologies
TRIUMF
2015-2025
University of Victoria
2021-2025
South African Radio Astronomy Observatory
2024
Simon Fraser University
1977-2023
University of British Columbia
2000-2023
A new experiment is described to detect a permanent electric dipole moment of the proton with sensitivity $10^{-29}e\cdot$cm by using polarized "magic" momentum $0.7$~GeV/c protons in an all-electric storage ring. Systematic errors relevant are discussed and techniques address them presented. The measurement sensitive physics beyond Standard Model at scale 3000~TeV.
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,...
AWAKE is a proton-driven plasma wakefield acceleration experiment. % We show that the experimental setup briefly described here ready for systematic study of seeded self-modulation 400\,GeV proton bunch in 10\,m-long rubidium with density adjustable from 1 to 10$\times10^{14}$\,cm$^{-3}$. short laser pulse used ionization vapor propagates all way along column, suggesting full vapor. occurs bunch, at time and follows affects bunch.
Static electric dipole moments of nondegenerate systems probe mass scales for physics beyond the Standard Model well those reached directly at high energy colliders. Discrimination between different models, however, requires complementary searches in atomic-molecular-and-optical, nuclear and particle physics. In this report, we discuss current status prospects near future a compelling suite such experiments, along with developments needed encompassing theoretical framework.
An activity of the TRIUMF automatic beam tuning program, Bayesian optimization for Ion Steering (BOIS) method has been developed to perform corrective centroid steering beams at ISAC facility. BOIS exclusively controls steerers correction after transverse optics have set according theory. The is fully online, easy deploy, and tested in low energy post-accelerated ISAC, achieving results comparable human operators. scaleBOIS boundBOIS are naïve proof-of-concept solutions preferably select...
A new high field spectrometer has been built to extend the capabilities of $\beta$-detected nuclear magnetic resonance ($\beta$-NMR) facility at TRIUMF. This beamline extension allows $\beta$-NMR spectroscopy be performed with fields up 200 mT parallel a sample's surface (perpendicular ion beam), allowing depth-resolved studies local electromagnetic spin polarized probes much higher applied than previously available in this configuration. The primary motivation and application is allow...
A 15 mA dc H− multicusp source has been developed for injection into a TR30 cyclotron. This is also used with 900 kV tandem accelerator to obtain 10 protons at 1.8 MeV. The program an extension of the 5–7 cusp TRIUMF during 1989–1990. Major efforts include search optimal filament materials, shape, and location; comparison line confinement magnetic filtering electrons extraction region; optimization lense configuration; upgrading vacuum power systems capability. noncesiated maximum arc...
Interferometric experiments designed to detect the highly redshifted 21-cm signal from neutral hydrogen are producing increasingly stringent constraints on power spectrum, but some k-modes remain systematics-dominated. Mutual coupling is a major systematic that must be overcome in order signal, and simulations reproduce effects seen data can guide strategies for mitigating mutual coupling. In this paper, we analyse 12 nights of Hydrogen Epoch Reionization Array compare against include...
The 21 cm transition from neutral Hydrogen promises to be the best observational probe of Epoch Reionisation (EoR). This has led construction low-frequency radio interferometric arrays, such as Reionization Array (HERA), aimed at systematically mapping this emission for first time. Precision calibration, however, is a requirement in observations. Due spatial compactness HERA, array prone effects mutual coupling, which inevitably lead non-smooth calibration errors that contaminate data. When...
Views Icon Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Twitter Facebook Reddit LinkedIn Tools Reprints and Permissions Cite Search Site Citation Richard Baartman; Betatron resonances with space charge. AIP Conf. Proc. 5 November 1998; 448 (1): 56–72. https://doi.org/10.1063/1.56781 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Dropdown Menu input auto suggest filter your...
The off-line ion source (OLIS) terminal consists of a microwave cusp source, either surface or hybrid surface-arc discharge and an electrostatic switch that allows selecting any one the sources without mechanical intervention. These provide variety beams to ISAC experiments, for commissioning accelerators, setting up radioactive tuning beam lines. has been operational since 1995 provides singly doubly charged from various stable isotopes many experiments at high low energy areas. Originally...
Abstract Measuring neutron capture cross sections of radioactive nuclei is a crucial step towards better understanding the origin elements heavier than iron. For decades, precise measurement direct in “stellar” energy range (eV up to few MeV) was limited stable and longer-lived that could be provided as physical samples then irradiated with neutrons. New experimental methods are now being developed extend these measurements shorter-lived ( $$t_{1/2}<$$ <mml:math...
Efficient primary ion sources at ISOL facilities normally produce singly charged ions. This limits the usable mass range for postacceleration due to A∕Q acceptance of accelerator. At ISAC facility TRIUMF an below 7 is desired avoid further stripping. Thus, charge state breeding necessary if higher masses are be accelerated. A 14 GHz ECRIS “PHOENIX” booster has been chosen as a breeder. In order investigate and optimize its performance under conditions it set up test bench equipped with...
ARIEL is the new TRIUMF facility for production of radioactive ion beams that will enable delivery three simultaneous RIB to ISAC experimental stations. Two additional target stations produce by using either a 50 kW proton or from 500 electrons via photofission. The electron beam driver going be MeV 10 mA CW superconducting linac. first stage e-linac installation completed and commissioning underway. paper present design characteristics, installation, strategy current results.
We describe a proposal to search for an intrinsic electric dipole moment (EDM) of the proton with sensitivity \targetsens, based on vertical rotation polarization stored beam. The New Physics reach is order $10^~3$TeV mass scale. Observation EDM provides best probe CP-violation in Higgs sector, at level that may be inaccessible electron-EDM experiments. improvement $\theta_{QCD}$, parameter crucial axion and dark matter physics, about three orders magnitude.