The effect of field error of an undulator magnet on the tune

The horizontal tune shift produced by the UVSOR undulator has been found to be larger than the value estimated from a quadratic field variation in the radial direction. This discrepancy is satisfactorily described in terms of a small displacement of the magnetic centers of magnet blocks in the radia...

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Veröffentlicht in:	Japanese Journal of Applied Physics 1987-11, Vol.26 (11), p.1939-1940
Hauptverfasser:	YONEHARA, H, KASUGA, T, KINOSHITA, T, HASUMOTO, M
Format:	Artikel
Sprache:	eng
Schlagworte:	Charged-particle beams Electromagnetism electron and ion optics Electron and positron beams Exact sciences and technology Fundamental areas of phenomenology (including applications) Physics
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Beschreibung
Zusammenfassung:	The horizontal tune shift produced by the UVSOR undulator has been found to be larger than the value estimated from a quadratic field variation in the radial direction. This discrepancy is satisfactorily described in terms of a small displacement of the magnetic centers of magnet blocks in the radial direction.
ISSN:	0021-4922 1347-4065
DOI:	10.1143/jjap.26.1939