S-Band RF photoinjector as a driver for coherent Cherenkov source

Smirnov, A.V.; Musumeci, P.

doi:10.1016/j.nima.2013.04.024

Cited by 5 publications

(2 citation statements)

References 8 publications

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“…It was also found that even lower beam energy can be used while producing higher power if the beam is on-cathode microbunched with, e.g., beat-wave or multiplexing techniques, properly overfocused, and the radiator is designed with higher shunt impedance and outcoupling efficiency [4,5,6].…”

Section: Introductionmentioning

confidence: 99%

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Characterization of coherent Cherenkov radiation source

Smirnov

2015

Nuclear Instruments and Methods in Physics Research Section A:

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Engineering formulae for calculation of peak, and spectral brightness of resonant long-range wakefield extractor are given. It is shown that the brightness is dominated by beam density in the slow wave structure and antenna gain of the outcoupling. Far field radiation patterns and brightness of circular and high aspect ratio planar radiators are compared. A possibility to approach diffraction limited brightness is demonstrated. The role of group velocity in designing of the Cherenkov source is analyzed. The approach can be applied for design and characterization of various structure-dominated sources (e.g., wakefield extractors with gratings or dielectrics, or FEL-Cherenkov combined sources) radiating into a free space using an antenna (in microwave to sub-mm wave regions). The high group velocity structures can be also effective as energy dechirpers and for diagnostics of microbunched relativistic electron beams.

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Section: Introductionmentioning

confidence: 99%

“…(as long as the total bunching formfactor for the train is still substantial[6]). In the intermediate case when the train length is approaching to the filling time gr v L / a simple superposition can be applied for the analytical calculation of the wakefields with taking…”

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confidence: 99%