Zobrazeno 1 - 10
of 33
pro vyhledávání: '"Seth Veitzer"'
Publikováno v:
AIP Conference Proceedings.
A global model is applied to investigate the complex chemistry in a negative hydrogen ion source with caesiated plasma grid. This global model includes electrons, neutral hydrogen molecules with all vibrational states (H2(v)), hydrogen atoms in the f
Publikováno v:
AIP Conference Proceedings.
Autor:
Luke N. Olson, Seth Veitzer, Jon C. Cahoun, John W. Ruge, Kris Beckwith, Stephen F. McCormick
Publikováno v:
IEEE Transactions on Plasma Science. 43:957-964
Many problems of interest in plasma modeling are subject to the tyranny of scales, specifically, problems that encompass physical processes that operate on timescales that are separated by many orders of magnitude. Investigating such problems, theref
Publikováno v:
AIP Conference Proceedings.
Publikováno v:
AIP Conference Proceedings.
A numerical simulation model for Inductively Coupled Plasma (ICP) sources and its implementation in the USim fluid-plasma software is presented. The electric field from the external antenna is solved using the vector potential equation with a variabl
Autor:
Seth Veitzer, Peter Stoltz
Publikováno v:
AIP Conference Proceedings.
The dynamics of electron cloud buildup, saturation, and dissipation represent a complex interaction between accelerator and beam parameters. In many accelerators bunch charges are large and beam frequencies are small. In this case electrons have a go
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 754:83-93
The use of transverse electric (TE) waves has proved to be a powerful, noninvasive method for estimating the densities of electron clouds formed in particle accelerators. Results from the plasma simulation program VSim have served as a useful guide f
Publikováno v:
The Open Plasma Physics Journal. 6:1-5
We present results from precision simulations of the electron cloud (EC) in the Fermilab Main Injector (MI), focusing on the dynamics of the EC close to the Retarding Field Analyzer (RFA) detectors. Our simulations are based on the Vorpal plasma simu
Publikováno v:
The Review of scientific instruments. 87(2)
Rf-driven ion sources for accelerators and many industrial applications benefit from detailed numerical modeling and simulation of plasma characteristics. For instance, modeling of the Spallation Neutron Source (SNS) internal antenna H(-) source has
Autor:
Peter Stoltz, Seth Veitzer
Publikováno v:
AIP Conference Proceedings.
Electron cloud effect (ECE) is one of the main obstacles to achieving better performance and beam stability in current and future accelerators. For instance, ECE has been observed at the LHC at all bunch spacings, and the 2015 upgrade to 25 ns spacin