• DOI:10.1140/EPJD/E2014-40700-0
• Corpus ID: 119279567

Simulation studies of the behavior of positrons in a microtrap with long aspect ratio

@article{Narimannezhad2012SimulationSO,
  title={Simulation studies of the behavior of positrons in a microtrap with long aspect ratio},
  author={Alireza Narimannezhad and C J Baker and Marc H. Weber and Joshah Jennings and Kelvin G. Lynn},
  journal={The European Physical Journal D},
  year={2012},
  volume={68},
  pages={1-19}
}

• A. Narimannezhad, C. Baker, +2 authors K. Lynn
• Published 29 October 2012
• Physics
• The European Physical Journal D

The storage capacity of positrons in micro-Penning-Malmberg traps with large length to radius aspect ratios and radii of tens of microns was explored. Simulation studies were conducted with the WARP code and Charged Particle Optics program. A new design of the Penning-Malmberg trap consisting of an array of microtraps with substantially lower end electrode potential than conventional traps was considered. Simulations demonstrated each microtrap with 50 μm radius immersed in a 7T uniform magnetic field could store positrons indefinitely with a density of 1.6 × 1011cm-3 while the confinement voltage was only 10V. For microtraps with radii between 100 μm and 3 μm, the particle density scaled as r-2. Charge clouds developed the expected radial density distribution (that of a soft edge) and rigid rotation evolved to some extent. Plasma confinement time was independent of trap length.