Mode trap for absorbing transverse modes of an accelerated electron beam
A mode trap to trap and absorb transverse modes formed by a beam in a linear accelerator includes a waveguide having a multiplicity of electrically conductive (preferably copper) irises and rings, each iris and ring including an aperture, and the irises and rings being stacked in a side-by-side, alternating fashion such that the apertures of the irises and rings are concentrically aligned. An absorbing material layer such as a dielectric is embedded in each iris and ring, and this absorbing material layer encircles, but is circumferentially spaced from its respective aperture. Each iris and ring includes a plurality of circumferentially spaced slots around its aperture and extending radially out toward its absorbing material layer. 9 figs.
- Issue Date:
- OSTI Identifier:
- 7287477
- Assignee:
- Dept. of Energy, Washington, DC (United States) PTO; EDB-94-103210
- Patent Number(s):
- US 5317234; A
- Application Number:
- PPN: US 7-924991
- Contract Number:
- W-31109-ENG-38
- Resource Relation:
- Patent File Date: 5 Aug 1992
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 43 PARTICLE ACCELERATORS; EQUIPMENT; DESIGN; LINEAR ACCELERATORS; OSCILLATION MODES; ABSORPTION; DIELECTRIC MATERIALS; ELECTRIC CONDUCTORS; ELECTRON BEAMS; WAVEGUIDES; ACCELERATORS; BEAMS; LEPTON BEAMS; MATERIALS; PARTICLE BEAMS; SORPTION; 430300* - Particle Accelerators- Auxiliaries & Components