Speaker
Dr
Cristina Knapic
(Sincrotrone Trieste S.C.p.A.)
Description
A permanent magnet Apple II type undulator was built at Elettra and a block sorting
process was done in order to minimize the effects of magnetic errors on
trajectories
and angles of the electron beam. To check and optimize these corrections, Stretched
Wire and Hall Plate measurements were performed. While the Stretched Wire system
provides a clean measurement of field integrals, the Hall Plates are affected by
angular misalignment of the probes and planar Hall effect. The latter could be
separately analyzed using the possibility offered by the adjustable magnetic
undulator structure to change the direction of the main field from vertical to
horizontal. Final compensation is achieved comparing Hall Plate and Stretched Wire
field integral measurement result.
Author
Dr
Cristina Knapic
(Sincrotrone Trieste S.C.p.A.)
Co-authors
Dr
Bruno Diviacco
(Sincrotrone Trieste S.C.p.A.)
Dr
Dino Zangrando
(Sincrotrone Trieste S.C.p.A.)
