Theoretical analysis of a time focus and time amplifier cavity in streak tube

摘要

During the last few years, The time resolution of X-ray streak cameras have been improved to near 300-fs. Due to the relative slower sweeping speed and initial energy distribution of electrons, It is hard to breakthrough the 100 fs time resolution barrier. In this letter, time focus and time amplifier system is proposed. The time focus system is used to compensate the time dispersion between photocathode and anode. The using of a time amplifier improves the technical time resolution. The time focus and time amplifier system is designed to a compact fast electrons cavity structure.