| Paper |
Title |
Page |
| TUPLT050 |
Lattice for CELLS
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1264 |
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- M. Muñoz, D. Einfeld
CELLS, Bellaterra (Cerdanyola del Vallès)
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The CELLS is an approved project to build a national synchrotron light source in Spain. The main goals of the project are to provide a medium energy machine (3 GeV) with low emittance and top up operation, a circumference of ~280 m and at least 12 straight sections available for experiments. At present, two lattices are being considered. The first one is based in QBA optics and provides and emittance of 5 nm-rad, using existing technologies. The second one is a TBA one, with an emittance of 2 nm, where physical aperture are reduced by at least a factor 2 and gradients in the bending magnets are up to 10 T/m. We present the selected lattice, and review the main beam dynamics (energy acceptance, errors) issues.
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| THPKF026 |
An Update on the SESAME Light Source
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2320 |
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- D. Einfeld
CELLS, Bellaterra (Cerdanyola del Vallès)
- M. Attal, G. Vignola
SESAME, Amman
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During the past three years, the SESAME machine design has been optimised gradually taking into consideration the users demand in the Middle East region. The earlier design concept was to upgrade BESSY I to an energy of 1GeV, now SESAME is a 2.5GeV 3rd generation light source. A recent design review has recommended changing the machine lattice and layout to give greater flexibility for future upgrading and modification, the longest possible beam lines and the longest possible insertion devices, all of that with the limitation of the space available for the machine within the building. By shifting the machine by 6m from the centre of the building (in one direction) it was possible to increase the circumference of the storage ring by 3.6m into 128.4m and beam lines with lengths of 37.7m achieved, while the longest beam line in the old design was only 33.1m, this also increased the total length of the beam lines from 378.2m in the old design into 391.0m. An outline of these optimisations with their influence on the machine output is presented here. Furthermore the beam dynamics, the design of the main components of the storage ring and the first set of beam lines will be discussed.
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| THPKF027 |
A Concept for the Spanish Light Source CELLS
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2323 |
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- D. Einfeld, J. Bordas, J. Campmany, S. Ferrer, M. Muñoz, M. Pont, F. Pérez
CELLS, Bellaterra (Cerdanyola del Vallès)
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In May of 2003 the Spanish and Catalan Governments established a public Consortium for the construction, equipment and exploitation of a third generation Synchrotron Light Source. The foundation was based upon a proposal from 1997 to build a 2.5 GeV, 12-fold symmetry machine with a circumference of around 260 m. At present a re-design is being considered, based upon the following decisions: 1.) Electron energy of 3 GeV, 2.) Circumference around 280 m, 3.) Emittance smaller than 5 nm.rad, 4.) 16-fold symmetry lattice 5.) Full energy injector, 6.) Topping-up injection mode foreseen and 7.) Booster synchrotron and Storage ring housed in the same tunnel. Lattice considerations are given in an accompanying paper. In the present one we will give a project overview and explain key design decisions and overall schedule. Five beamlines will be design and construct in a first phase to cover the needs of the Spanish community. The definition of these beamlines will take place during 2004 involving the users community. Planned beam commissioning will be in 2009.
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| THPKF068 |
An Advanced Light Source Proposed for the South Eastern USA
|
2418 |
| |
- V.P. Suller, M.G. Fedurin, J. Hormes
LSU/CAMD, Baton Rouge, Louisiana
- D. Einfeld
CELLS, Bellaterra (Cerdanyola del Vallès)
- G. Vignola
SESAME, Amman
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At this time CAMD, a 1.3 GeV second generation storage ring, is the only synchrotron radiation facility in the Southeastern USA. To cater for the increasing demand for synchrotron light in this region a study is being made for a new high performance source. In keeping with its role as a regional source, it must be economical to construct and operate yet provide high brightness beams from its Insertion Devices. These will need to span both the soft X-ray region (1-2 keV) and the X-ray region up to at least 13 keV. A high brightness 3rd generation source is described which exhibits a beam emittance less than 10 nm rads at an energy of 2.5 GeV. By using a lattice cell derived from the Theoretical Minimum Emittance type, this performance is achieved in a circumference of only approximately 160 m. The economical, yet flexible, lattice uses vertically focusing gradient in the dipoles. The lattice functions and other parameters are presented of both a 12 cell double bend design and a 10 cell triple bend. The 12 cell gives a horizontal emittance of 8.5 nm rads and the 10 cell 4.6 nm rads. The dynamical stability of both lattices is described together with the beam performance from the anticipated insertion devices. The current status of the proposal is explained.
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