Abstracts Brochure - CERN

THPLS007
THPLS008
THPLS009
29-Jun-06 16:00 - 18:00 THPLS — Poster Session
various delays, it was also necessary to manage the cohabitation with the various building trades. However, the work
made on the initial planning paid off as without its detailed protocols, we could not have carried out the Process
installation within correct deadline.
Magnetic Measurements Results of the Dipoles, Quadrupoles and Sextupoles of the
SOLEIL Storage Ring
P. Brunelle, C. Benabderrahmane, P. Berteaud, F. Briquez, A. Dael,
L. Dubois, M. Girault, A. Madur, F. Marteau, A. Nadji, F. Paulin, J.
Vétéran (SOLEIL)
448
During the magnetic measurement campaign,
from May 2004 to August 2005, the 326
electro-magnets of the SOLEIL Storage Ring
have been characterized in terms of magnetic
axis centering and field properties. For the
dipoles, two types of measurements have been performed at SOLEIL: field mapping in the mid plan using a Hall probes
bench, and field integral comparison with a reference magnet using a stretched wire bench. For the quadrupoles, a
rotating coil bench has been built and optimized at SOLEIL in order to reach magnetic center and tilt angle adjustments
within ± 25 µm and ± 0.1 mrad respectively. For the sextupoles, magnetic measurements have been performed by
the SIGMAPHI Company. This paper will present the main features of the SOLEIL benches, the results of magnetic
measurements in terms of reproducibility, field identity between magnets, magnetic axis centering, and harmonic
content versus current. Moreover, the origin of some unexpected harmonic field components will be discussed, as
well as the magnetic compensation scheme used to minimize some of them.
Commissioning of the SOLEIL Booster
SOLEIL is a 2.75 GeV new third genera-
A. Loulergue (SOLEIL)
tion synchrotron radiation facility under construction
near Paris. The injector system is
composed of a 100 MeV electron Linac pre-accelerator followed by a full energy (2.75 GeV) booster synchrotron. The
booster lattice is based on a FODO structure with missing magnet. With a circumference of 157 m and low field
magnets (0.74 T), the emittance is in the range of 110 to 150 nm.rad at 2.75 GeV. The magnets are excited at 3 Hz, using
switched mode power supplies, with digital regulation. The LEP type RF cavity is powered by a 35 kW-352 MHz solid
state amplifier. Closed orbits are measured turn by turn, using the BPM Libera digital electronics. The commissioning
took place in October 2005, and an acceleration efficiency of 75% was obtained at the maximum energy. The main
results achieved during that commissioning will be reported.
First Results of the Commissioning of SOLEIL Storage Rings
The commissioning of SOLEIL’s storage ring
A. Nadji, A. Nadji (SOLEIL)
will start in April 2006. The objective is to
reach, within a first phase of two months,
stable beam conditions at 100 mA in the multi-bunch mode that can be used for the commissioning of the beamlines.
This is a challenging objective, especially because the SOLEIL’s ring is incorporating some innovative techniques such
as the use of a superconducting RF cavity, NEG coating for all straight parts of the machine and new BPM electronics.
Prior to the start of the commissioning, some insertion devices and most of the insertion devices low gap vacuum
vessels, including 10 mm inner vertical aperture vessels for the Apple-II type, will be installed on the ring. This paper