Status of the Commissioning of SOLEIL

• Main Authors: Filhol, J M, Couprie, M E, Level, M P, Besson, J C, Brunelle, P, Denard, J C, Godefroy, J M, Herbeaux, C, Lebasque, P, Roux, V Le, Lestrade, A, Loulergue, A, Marchand, P, Nadji, A, Nadolski, L, Nagaoka, R, Pottin, B, Tordeux, M A
• Format: Conference Proceeding
• Language: English
• Subjects: AMPLIFIERS; BEAM POSITION; CHARGE-COUPLED DEVICES; COMMISSIONING; DESIGN; FAR ULTRAVIOLET RADIATION; FIELD EMISSION; HARD X RADIATION; INSTALLATION; KEV RANGE; OPERATION; PARTICLE ACCELERATORS; RF SYSTEMS; STORAGE RINGS; SYNCHROTRON RADIATION; SYNCHROTRON RADIATION SOURCES; SYNCHROTRONS; WIGGLER MAGNETS
• ISSN: 0094-243X; 1551-7616
• DOI: 10.1063/1.2435992

SOLEIL is a third generation Synchrotron radiation Source, under construction in France at St Aubin, near Paris. The Storage Ring consists in a 357 m circumference ring, with 16 cells and 24 straight sections (4X12m, 12X7m, 8X3.6m), out of which up to 21 will house insertion devices. The optics, with distributed dispersion, features a low 3.7 nm.rad emittance at the 2.75 GeV operating energy, so as to provide high brilliance, from the VUV up to the hard X ray domain. In order to provide a long lifetime, and beam position stabilities in the micron range, significant attention was paid at each design stage (optics, magnets, beam position monitors, vacuum and RF systems,..), including the design of the building and infrastructure, the construction of which is now complete. This resulted in some unprecedented approaches such as the intensive use of NEG coating Aluminium vessels, or the development of a dedicated superconducting RF cavity and of 190 kW solid state RF amplifiers. The construction, started in 2002, is now completed. The injector system (100 MeV Linac) and the 3 Hz full energy Booster synchrotron have reached nominal operating conditions by fall 2005. The installation of the Storage Ring was just completed and its commissioning started in May 2006. First 9 turns in the ring were achieved on May the 14th, and visible synchrotron radiation was also observed on a CCD camera. Innovative insertion devices were designed and built so as to provide the best possible performances in an energy range as large as 5 eV to 20 keV. These are helical electromagnetic devices with 640 mm and 256 mm periods, APPLE II type undulators with 80 mm period, and in-vacuum hybrid undulators with 20 mm period. Two infra-red beamlines providing both edge and constant dipole field emission are also under construction and a superconducting wiggler is currently being designed in order to provide high flux in the 10 to 50 keV range. A first set of 10 beamlines (out of 24 included in the project) is being built and will be tested from summer 2006 onwards, with the aim of starting Users operation by the beginning of 2007.