3D Metallic Lattices for Accelerator Applications

Author

Shapiro, M.A. ; Sirigiri, J.R. ; Temkin, R.J. ; Shvets, G.

Author_Institution

MIT Plasma Science and Fusion Center, Cambridge, MA 02139, USA

fYear

2005

fDate

16-20 May 2005

Firstpage

1838

Lastpage

1840

Abstract

We present the results of our recent research on 3D metallic lattices operating at microwave frequencies, with applications to advanced accelerating structures, radiation sources based on the Smith-Purcell (SP) effect, and SP-based microbunch diagnostics. Electromagnetic waves in a simple 3D cubic lattice formed by metal wires are investigated using HFSS. The bulk modes in the lattice are determined using single cell calculations, with phase advances in all three directions. The Brillouin diagram for the bulk modes of the cubic wire lattice is calculated. The recently predicted "plasmon" and "photon" modes are identified in the simulations. Surface modes at the vacuum/wire lattice interface are identified, and their dispersion relation (the frequency vs. the wave number along the interface) is studied. The surface mode profiles clearly demonstrate that the wire lattice acts as a negative dielectric constant material.

Keywords

Acceleration; Dielectric constant; Dielectric materials; Dispersion; Electromagnetic scattering; Lattices; Microwave frequencies; Plasmons; Predictive models; Wire;

fLanguage

English

Publisher

ieee

Conference_Titel

Particle Accelerator Conference, 2005. PAC 2005. Proceedings of the

Print_ISBN

0-7803-8859-3

Type

conf

DOI

10.1109/PAC.2005.1590930

Filename

1590930