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Direct measurement of the skew angle of the Poynting vector in a helically phased beam

✍ Scribed by Leach, Jonathan; Keen, Stephen; Padgett, Miles J.; Saunter, Christopher; Love, Gordon D.


Book ID
115406855
Publisher
Optical Society of America
Year
2006
Tongue
English
Weight
337 KB
Volume
14
Category
Article
ISSN
1094-4087

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The skew-quadrupole field errors in an undulator were determined from the response of the stored beam. This method used was to measure the change of the horizontal closed orbit distortion produced by two types of vertical local bump orbit in the undulator. In this method, the unknown distribution of