Development of powerful long-pulse Bragg FELs operating from sub-THz to THz bands based on linear induction accelerators: recent results and projects

Peskov, N. Yu.; Malkin, A. M.; Sergeev, A. S.; Zaslavsky, V. Yu.; Kaminsky, A. K.; Sedykh, S. N.; Golubev, I. I.; Golubykh, S.; Козлов, А.П.; Sidorov, A. I.; Arzhannikov, A. V.; Nikiforov, D. A.; Sinitsky, S. L.; Skovorodin, D. I.; Starostenko, A. A.

doi:10.1051/epjconf/201819501010

Cited by 9 publications

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“…A great progress in the development of research in this direction should be considered the project of a terahertz FEL based on the beam generated by a linear induction accelerator (LIA), proposed by the BINP SB RAS in collaboration with the IAP RAS (Nizhny Novgorod) [27]. Such an accelerator, created by the BINP, has the following parameters: beam current up to 2 kA, electron energy up to 20 MeV, and pulse duration about 100 ns [28]- [30].…”

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Energy Content and Spectral Composition of a Submillimeter Radiation Flux Generated by a High-Current Electron Beam in a Plasma Column With Density Gradients

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Sinitsky

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et al. 2022

IEEE Trans. Plasma Sci.

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This article presents the results of experimental studies on radiation flux generation in the submillimeter wavelength range due to a strong beam-plasma interaction. A relativistic electron beam (REB) with parameters 0.5 MeV/12 kA/6 µs pumps plasma waves in a plasma column with a length of ∼2 m at a plasma density of ∼10 15 cm −3 in a magnetic field of ∼4 T. In the presence of density gradients in the plasma column, direct measurements of the energy content of the radiation flux 18 cm in diameter leaving the plasma column into the atmosphere showed that its value reaches 5-7 J. The pulse duration of the flux at half of its amplitude was about 0.5 µs, and therefore, the pulse power was at the level of ∼10 MW. In this series of experiments, the spectral composition of the radiation flux in the frequency range of 0.1-0.5 THz and the energy distribution function of the beam electrons passed through the plasma have been measured.

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confidence: 99%