Abstract
Undulator for terahertz FEL is created of ferrite materials. The length of the undulator period is 9 cm and the number of periods is 27. By means of selection and redistribution of magnetic elements it was succeeded to reduce the spread in amplitudes of the magnetic field down to 7%. Additional windings in magnetic elements were used to compensate for the residual spread. The needed focusing gradient of the magnetic field is obtained by means of relative displacement, along the x-axis, of alternating poles with opposite signs of the magnetic field. The undulator parameters, including the properties of focusing in the horizontal plane, are studied.
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Original Russian Text © M.L. Petrosyan, L.A. Gabrielyan, Y.R. Nazaryan, G.Kh. Tovmasyan, K.B. Hovhannisyan, 2007, published in Izvestiya NAN Armenii, Fizika, 2007, Vol. 42, No. 1, pp. 57–62.
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Petrosyan, M.L., Gabrielyan, L.A., Nazaryan, Y.R. et al. Undulator with permanent ferrimagnetic magnets. J. Contemp. Phys. 42, 38–41 (2007). https://doi.org/10.3103/S1068337207010082
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DOI: https://doi.org/10.3103/S1068337207010082