Speaker
Dr
Olivier Marcouillé
(Synchrotron SOLEIL)
Description
One electromagnetic undulator (HU640)has been constructed to cover the VUV spectral
range of the SOLEIL synchrotron. HU640 has been especially designed to produce
polarized photons 5 eV -40 eV. It is composed of 16 periods of 640 mm generating up
to 0.1 T in both transverse direction Bx and Bz. The field is produce by three sets
of pure coils installed in a special arrangement. One set of coils is dedicated to
generate the horizontal component Bx. Two other sets, shifted the one from the
other
by a quarter of period along the ID axis produce the vertical component Bz with a
possible continuous translation varying from +/- half a period without any carriage
motion. In the frame of the measurement of HU640, a special device has been
developed and constructed by the SOLEIL teams. The bench is equipped with a
carriage
moving inside a 12 meter guiding tube along the axis of the undulator. Both local
and integral measurements are achieved by either 2D Hall probes or translated
coils.
The position of the sensors are known by means of a laser interferometer allowing
to
trigger on flight measurements. In this paper we present the design of the bench
and
the preliminary magnetic measurements of the undulator
Author
Dr
Olivier Marcouillé
(Synchrotron SOLEIL)
Co-authors
Dr
Antoine Dael
(Synchrotron SOLEIL)
Mr
Arnaud Mary
(Synchrotron SOLEIL)
Mr
Jean-Louis Marlats
(Synchrotron SOLEIL)
Dr
Keihan Tavakoli
(Synchrotron SOLEIL)
