Pulse-power-induced oscillations of the REX electron beam
- 7 January 2003
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
Abstract
The Relativistic Electron-Beam Experiment (REX) pulse power generator is used to produce a 4 MeV, 5 kA, 50 ns cathode. Multiple current rise times are used to examine pulse-power-induced beam oscillations. Diagnostics include a streak camera and high-speed electronic probes for monitoring current and voltage. Correlation between beam oscillations and TE-TM (transverse electric-transverse magnetic) cylindrical cavity modes in the anode-cathode (A-K) gap is examined. Electromagnetic excitation of the cylindrical A-K gap in the REX experiments was found to produce unacceptable levels of beam motion as a function of time. Correction of hardware asymmetries did not eliminate the problem; the problem was solved by tailoring the current rise time of the pulse power to minimize the coupling of the pulse power drive to the cavity.Keywords
This publication has 1 reference indexed in Scilit:
- A 4-megavolt, 5-kiloampere pulsed-power high-brightness electron beam sourcePublished by Institute of Electrical and Electronics Engineers (IEEE) ,2003