| Paper |
Title |
Page |
| TUA2CO04 |
Vacuum Breakdown at 110 GHz |
275 |
| |
- S.C. Schaub
MIT, Cambridge, Massachusetts, USA
- M.A. Shapiro, R.J. Temkin
MIT/PSFC, Cambridge, Massachusetts, USA
|
|
| |
A 1.5 MW, 110 GHz gyrotron is used to produce a linearly polarized quasioptical beam in 3 μs pulses. The beam is concentrated in vacuum to produce strong electric fields on the surfaces of dielectric and metallic samples, which are being tested for breakdown threshold at high fields. Dielectrics are tested in the forms of both windows, with electric fields parallel to the surface, and sub-wavelength dielectric rod waveguides, with electric fields perpendicular to the surface. Currently, visible light emission, absorbed/scattered microwave power, and vacuum pressure diagnostics are used to detect discharges on dielectric surfaces. Future experiments will include dark current diagnostics for direct detection of electrons. Dielectrics to be tested include crystal quartz, fused quartz, sapphire, high resistivity float-zone silicon, and alumina. Metallic accelerator structures will also be tested in collaboration with SLAC. These tests will require shortening of the microwave pulse length to the nanosecond scale.
|
|
|
Slides TUA2CO04 [1.826 MB]
|
|
| DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-NAPAC2016-TUA2CO04
|
|
| Export • |
reference for this paper using
※ BibTeX,
※ LaTeX,
※ Text/Word,
※ RIS,
※ EndNote (xml)
|
|
| |