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3 results on '"sub-ps"'

2. Running Status of SRF Gun-II at ELBE Center

Author

Xiang, R., Arnold, A., Lu, P., Murcek, P., Schaber, J., Teichert, J., Vennekate, H., Zwartek, P., Xiang, R., Arnold, A., Lu, P., Murcek, P., Schaber, J., Teichert, J., Vennekate, H., and Zwartek, P.

Abstract

As a new electron source with higher brilliance, the second version of the superconducting RF photoinjector (SRF Gun-II) has been successfully commissioned at the ELBE Center for high power radiation sources since 2014. SRF Gun-II features an improved 3.5-cell niobium cavity as well as a superconducting solenoid in the same cryomodule. With Mg photocathode SRF Gun-II can provide high current beam with bunch charge up to 300 pC at 100 kHz repetition rate. For user operation the SRF Gun-II successfully generated stable beam with 200 pC in CW mode and sub-ps bunch length. In this presentation the gun's status and beam parameters will be presented.

Published
2018

3. Laser-Free RF-Gun as a Combined Source of Thz and Ps-Sub-Ps X-Rays

Author

P. Buaphad, M. Ruelas, C. O’Neill, A.Andrews, Alexander Zholents, Josiah Hartzell, B. van der Geer, M. Smith, Alexei Smirnov, K. Folkman, S. Storms, O. Finn, A. Verma, T. Grandsaert, L. Faillace, Nicholas Sereno, Z. Ning, B.L.Berls, A. E. Knowles-Swingle, Y. Kim, Ronald Agustsson, Tara Campese, C. Eckman, M. de Loos, Salime Boucher, Y. Sun, Alex Murokh, and William Berg

Subjects
electron beam, Terahertz radiation, Terahertz, Radiation, sub-ps, Physics and Astronomy(all), slow-wave structure, law.invention, Optics, law, X-rays, Cherenkov, alpha-magnet, Cherenkov radiation, Electron gun, Physics, business.industry, Particle accelerator, Laser, group velocity, radiation, RF gun, Cathode ray, Physics::Accelerator Physics, business, Beam (structure), pulse
Abstract

A coherent, mm-sub-mm-wave source driven by a RF electron gun is proposed for wide research applications as well as auxiliary inspection and screening, safe imaging, cancer diagnostics, surface defectoscopy, and enhanced time-domain spectroscopy. It allows generation of high peak and average THz-sub-THz radiation power provided by beam pre-bunching and chirping in the RF gun followed by microbunching in magnetic compressor, and resonant Cherenkov radiation of an essentially flat beam in a robust, ∼inch-long, planar, mm-sub-mm gap structure. The proof-of-principle has been successfully demonstrated in Phase I on a 5 MeV beam of L-band thermionic injector of Idaho Accelerator Center. The system can also deliver an intense, ps-sub-ps bursts of low-to-moderate dose of relativistic electrons and X-ray radiation produced by the same beam required for pulsed radiolysis as well as to enhance screening efficiency, throughput and safety.

Published
2015
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