Observation of multi-GeV breakdown thresholds in dielectric wakefield structures

M. C. Thompson, H. Badakov, J. B. Rosenzweig, G. Travish, M. J. Hogan, R. Ischebeck, N. Kirby, R. Siemann, D. Walz, P. Muggli, A. Scott, R. Yoder

Producción científica: Conference contribution

1 Cita (Scopus)

Resumen

An experiment designed to test the breakdown threshold of a dielectric subjected to the GV/m-scale electric-fields of an intense electron-beam has been completed. In this experiment at the Final Focus Test Beam (FFTB) facility, the 28.5 GeV SLAC electron beam was focused down and propagated through short fused-silica capillary-tubes with internal diameters of as little as 100 μm. The electric field at the inner surface of the tubes was varied from about 1 GV/m to 22 GV/m by adjusting the longitudinal compression of the electron bunch. We observed a sharp increase in optical emissions from the capillaries in the middle part of this surface field range which we believe indicates the transition between sustainable field levels and breakdown. If this initial interpretation is correct, the multi-GV/m surfaced fields that were sustained equate to on axis accelerating field of several GV/m.

Idioma originalEnglish (US)
Título de la publicación alojadaProceedings of the IEEE Particle Accelerator Conference, PAC07
Páginas3026-3028
Número de páginas3
DOI
EstadoPublished - 2007
Publicado de forma externa
EventoIEEE Particle Accelerator Conference, PAC07 - Albuquerque, NM, United States
Duración: jun 25 2007jun 29 2007

Serie de la publicación

NombreProceedings of the IEEE Particle Accelerator Conference

Other

OtherIEEE Particle Accelerator Conference, PAC07
País/TerritorioUnited States
CiudadAlbuquerque, NM
Período6/25/076/29/07

ASJC Scopus subject areas

  • General Engineering

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