Affordable Access

Publisher Website

Self-consistent simulations of heavy-ion beams interacting with electron-clouds

Authors
Journal
Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment
0168-9002
Publisher
Elsevier
Publication Date
Volume
577
Identifiers
DOI: 10.1016/j.nima.2007.02.013
Keywords
  • Accelerator
  • Fusion
  • Electron Clouds
  • Heavy-Ion
  • Simulation
  • Particle-In-Cell
  • Plasma
  • Beam
Disciplines
  • Computer Science
  • Medicine

Abstract

Abstract Electron clouds and rising desorbed gas pressure limit the performance of many existing accelerators and, potentially, that of future accelerators including heavy-ion warm-dense matter and fusion drivers. For the latter, self-consistent simulation of the interaction of the heavy-ion beam(s) with the electron cloud is necessary. To this end, we have merged the two codes WARP (HIF accelerator code) and POSINST (high-energy e-cloud build-up code), and added modules for neutral gas molecule generation, gas ionization, and electron tracking algorithms in magnetic fields with large time steps. The new tool is being benchmarked against the High-Current Experiment (HCX) and good agreement has been achieved. The simulations have also aided diagnostic interpretation and have identified unanticipated physical processes. We present the “roadmap” describing the different modules and their interconnections, along with detailed comparisons with HCX experimental results, as well as a preliminary application to the modeling of electron clouds in the Large Hadron Collider.

There are no comments yet on this publication. Be the first to share your thoughts.