The property of universality for wigglers and invariance of electromagnetic radiation

This paper deals with the electromagnetic radiation generated in any planar pure permanent magnet wiggler. The following mental modification of the wiggler magnetic system is theoretically investigated: the easy axis of all magnetic blocks, which compose the wiggler, are rotated by the special low,...

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Bibliographic Details
Published in:Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Accelerators, spectrometers, detectors and associated equipment, 2001-07, Vol.467, p.206-209
Main Author: Smolyakov, M.N.
Format: Article
Language:English
Subjects:
Insertion device
Synchrotron radiation
Undulator
Wiggler
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Summary:This paper deals with the electromagnetic radiation generated in any planar pure permanent magnet wiggler. The following mental modification of the wiggler magnetic system is theoretically investigated: the easy axis of all magnetic blocks, which compose the wiggler, are rotated by the special low, while the wiggler geometry remains intact. This evidently causes the wiggler magnetic field to change in shape and amplitude. However it can be proved that the total power of wiggler radiation along with the wavelengths of radiated harmonics is invariant under this transformation. The change of magnetic field involves a variation in intensities of the radiation harmonics.
ISSN:0168-9002
1872-9576
DOI:10.1016/S0168-9002(01)00275-3