Possibility of Super-Radiance at the Frequencies of 3-5 THz from Short Electron Bunches Moving in Micro-Undulators

Possibility of Super-Radiance at the Frequencies of 3-5 THz from Short Electron Bunches Moving in Micro-Undulators

An available frequency range of coherent radiation from ps bunches with high charge can be significantly enhanced if one uses a micro-undulator with a high transverse field. Such an undulator with a helical symmetry can be implemented by redistributing a strong uniform magnetic field by a helical fe...

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Bibliographic Details
Published in:2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) p. 1
Main Authors: Balal, N., Bratman, V.L., Lurie, Yu
Format: Conference Proceeding
Language:English
Published: IEEE 01-09-2019
Subjects:
Free electron lasers
Magnetic fields
Modulation
Physics
Solenoids
Steel
Undulators
Online Access:Get full text
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Summary:An available frequency range of coherent radiation from ps bunches with high charge can be significantly enhanced if one uses a micro-undulator with a high transverse field. Such an undulator with a helical symmetry can be implemented by redistributing a strong uniform magnetic field by a helical ferromagnetic insertion. Simulations demonstrate that using such undulators with period of 8-10 mm enable efficient coherent spontaneous radiation from short bunches with durations of (0.08-0.15) ps and super-radiance from extended bunches with duration of about 2 ps in frequency range of 3-5 THz.
ISSN:2162-2035
DOI:10.1109/IRMMW-THz.2019.8874467