Image charge focusing of relativistic electron beams
- 15 January 1988
- journal article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 63 (2) , 583-585
- https://doi.org/10.1063/1.340094
Abstract
Experimental results are reported on the transport of a relativistic electron beam by image charge effects. The transport system consisted of a cylindrical metal tube periodically interrupted by transverse conducting grids with high transparency. Partial cancellation of the beam electric fields increased the space-charge-limited current level, allowing propagation in a magnetically self-pinched mode. A 400-keV, 4-kA beam traveled 30 cm in high vacuum through 10 focusing foils. Capture of the beam was almost 100% efficient; beam emittance was not severely degraded during capture and transport. The radius of the self-contained beam was 1.4 cm; the beam position was centered by the image current in the transport tube to within 1 mm. The favorable results imply that image charge focusing could be considered for transport in high-current linear induction accelerators.This publication has 6 references indexed in Scilit:
- Observations of high-current electron beam transport in a curved system with periodic solenoid lensesJournal of Applied Physics, 1987
- Free-electron lasersIEEE Circuits and Devices Magazine, 1987
- Alternate Transport Techniques for Electron Induction LinacsIEEE Transactions on Nuclear Science, 1983
- Design and Performance of the 1.5 MV Injector for FXRIEEE Transactions on Nuclear Science, 1981
- Exact Relativistic Solution for the One-Dimensional DiodeJournal of Applied Physics, 1969
- Rectilinear Electron Flow in BeamsJournal of Applied Physics, 1940