Abstract

Techniques for making electron transverse velocity measurements on an intense electron beam using thick-target bremsstrahlung emission are presented. The procedure presented here differs from similar previous measurements using thick-target bremsstrahlung in that it allows both time and spatial resolution. Data from the study of a 2.1-MeV, 40-kA, 140-ns-long beam are presented. Measurements on this beam had a transverse velocity resolution of about 0.1 c. The temporal resolution was about 5 ns and the spatial resolution was 6 mm. Techniques used to determine the time-resolved radial current density profile are also presented.

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