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253 results on '"Kuzikov S."'

11. Demonstration of sub-GV/m Accelerating Field in a Photoemission Electron Gun Powered by Nanosecond $X$-Band Radiofrequency Pulses

Author

Tan, W. H., Antipov, S., Doran, D. S., Ha, G., Jing, C., Knight, E., Kuzikov, S., Liu, W., Lu, X., Piot, P., Power, J. G., Shao, J., Whiteford, C., and Wisniewski, E. E.

Subjects
Accelerator Physics (physics.acc-ph), FOS: Physical sciences, Physics::Accelerator Physics, Physics - Accelerator Physics, Applied Physics (physics.app-ph), Physics - Applied Physics
Abstract

Radiofrequency (RF) electron guns operating at high accelerating gradients offer a pathway to producing bright electron bunches. Such beams are expected to revolutionize many areas of science: they could form the backbone of next-generation compact x-ray free-electron lasers or provide coherent ultrafast quantum electron probes. We report on the experimental demonstration of an RF photoemission electron source supporting an accelerating field close to 400~MV/m at the photocathode surface. The gun was operated in an RF transient mode driven by short $\sim 9$~ns X-band (\SI{11.7}{\giga\hertz}) RF pulses. We did not observe any major RF breakdown or significant dark current over a three-week experimental run at high accelerating fields. The demonstrated paradigm provides a viable path to forming relativistic electron beams with unprecedented brightness., 5 pages, 5 figures

Published
2022

18. Combined generator–accelerator scheme for high-gradient electrons acceleration by Ka-band subnanosecond superradiant pulses.

Author

Ginzburg, N. S., Fedotov, A. E., Kuzikov, S. V., Malkin, A. M., Sharypov, K. A., Shunailov, S. A., Vikharev, A. A., Yalandin, M. I., and Zotova, I. V.

Subjects
ELECTRONS, SUPERRADIANCE, PLASMA beam injection heating, ELECTRON beams, RESONATORS, INJECTORS, RADIATION
Abstract

An increase in the accelerating gradient in hollow metal structures powered by an RF field is associated with the development of sources of high-power short-pulse high-frequency radiation. To date, the most powerful (multi gigawatts) nanosecond-scale microwave pulses are produced based on the effect of Cherenkov super-radiance (SR). We consider the possibility of experimental observation of high-gradient acceleration of electrons by Ka-band SR pulses in a combined generator–accelerator scheme with two coaxial electron beams formed by a single cathode. The outer tubular beam is used to generate the SR pulse in periodical slow-wave structure, while the inner one is accelerated in a "pill-box" resonator. The main parameters of the proposed scheme are determined based on full-scale particle-in-cell simulations, according to which accelerating gradient can reach 400 MV/m as some fraction of electrons passing the resonator increases energy from 250 keV to 1.85 MeV. Using the obtained data, injector of the coaxial beams and the sensor of accelerated electrons are developed and tested. [ABSTRACT FROM AUTHOR]

Published
2022
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21. Applied research using a 30 GHz free-electron maser: Experimental study of interacton of high-power pulsed radiation with metals

Author

Baev, V. G., Vdovin, V. A., Vikharev, A. A., Ginzburg, N. S., Golubev, I. I., Golubykh, S. M., Zaitsev, N. I., Kaminsky, A. K., Kovalev, Yu. A., Kozlov, A. P., Kratko, A. F., Kryachko, I. A., Kuzikov, S. V., Lesnikovich, A. I., Milevich, I. A., Perel’shtein, E. A., Peskov, N. Yu., Petelin, M. I., Sedykh, S. N., Tyutyunnikov, S. I., and Fedotova, Yu. A.

Published
2012
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