Helical Undulator Based on Partial Redistribution of Uniform Magnetic Field
N. Balal, I.V. Bandurkin, V.L. Bratman, A.E. Fedotov
TL;DR
This paper introduces a novel helical undulator design utilizing a ferromagnetic helix to redistribute magnetic fields, aiming to generate coherent THz radiation from dense electron bunches in laser-driven photo-injectors.
Contribution
It proposes and experimentally validates a simple, efficient undulator design based on magnetic field redistribution with a ferromagnetic helix.
Findings
Successful theoretical modeling of the magnetic field redistribution.
Experimental demonstration of the undulator's effectiveness.
Potential for generating coherent THz radiation.
Abstract
A new type of helical undulator based on redistribution of magnetic field of a solenoid by ferromagnetic helix has been proposed and studied both in theory and experiment. Such undulators are very simple and efficient for promising sources of coherent spontaneous THz undulator radiation from dense electron bunches formed in laser-driven photo-injectors.
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