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| POS01 |
Status of the ALBA Project
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storage-ring, vacuum, lattice, booster |
1 |
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- M. Belgroune, E. Al-Dmour, G. Benedetti, J. Bordas, E. Boter, B. Calcagno, J. Campmany, D. Carles, C. Colldelram, M. Cornelis, M. Custido, M. De Lima, D. Einfeld, A. Falone, S. Ferrer, H. Hassanzadegan, U. Iriso, J. Klora, R. Martin, L. Miralles, M. Muñoz, L. Nikitina, I. Nikitine, J. Pasquaud, X. Permanyer, M. Pont, F. Pérez, J. Redo, F. Rey, L. Ribo, C. Ruget, F. Sanchez, R. Trivino
CELLS, Bellaterra (Cerdanyola del Vallès)
- D. Bertwistle, T. F. Günzel, J. Marcos, A. Olmos, M. Q. Quispe, A. Salom
ALBA, Bellaterra
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The storage ring ALBA is a 3 GeV third generation synchrotron light source under construction in Barcelona (Spain). ALBA is optimized for high photon flux density with a beam emittance of 4.5 nm·rad and a large number of available straight sections for Insertion Devices (3x8 m, 12x4.2 m) in a relatively small circumference of 268.8 m. Top-up operation is foreseen from the start. The injector complex for ALBA will consist of a 100 MeV linac and a full energy booster with a roughly small emittance of 9 nm·rad. The design of the lattice and of the major components of the accelerator complex (linac and booster, magnets, RF system, vacuum system) has been completed and the procurement procedure has started for the large majority of them. The construction of the building is planned to start in the first half of 2006 and the commissioning of the storage ring is foreseen for the end of 2008. This report offers an overview of the status of the project.
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| PLT14 |
Short Radiation Pulses in Storage Rings
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radiation, electron, laser, storage-ring |
14 |
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- S. Khan
Uni HH, Hamburg
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Funding: Funded by the Bundesminister für Bildung und Forschung and by the Land Berlin
The time resolution of experiments with synchrotron radiation, presently limited by a typical bunch length of 30–100 ps in electron storage rings, can be improved by making the bunches shorter (e.g. reducing the momentum-compaction factor or increasing the rf gradient) or by establishing a temporal-transverse correlation (e.g. transverse rf deflection or fs-laser slicing). Several methods, their present status and their respective merits or shortcomings are discussed.
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Slides
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| WG112 |
Proposal of a Synchrotron Radiation Facility to Supply Ultraviolet Light, X-Ray, MeV-photon, GeV-photon and Neutron
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laser, photon, electron, radiation |
24 |
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- Y. Kawashima
JASRI/SPring-8, Hyogo-ken
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This is a proposal of new facility, which consists of 1 GeV-linac, booster synchrotron and storage ring. The synchrotron accelerates electron beam from 1 GeV to 10 GeV. The storage ring stores the beam at arbitrary energy from 1 GeV to 10 GeV and top-up operation is carried out at any stored beam energy. The stored beam current depends on the beam energy. In the energy region of 8 GeV to 10 GeV, maximum beam current is around 100mA. Under the energy of 4 GeV, the targeted maximum current is 1 A. The storage ring supplies ultraviolet light, MeV-photon, GeV-photon and neutron for solid-state physics, biology, protein structure analysis, drug development and particle physics. The main feature of the facility is to be able to supply the monoenergetic MeV-photon and neutron. With CO2 laser and stored electron beam, monoenergetic MeV-photons are produced through the inverse Compton process. To obtain the target monoenergetic MeV-photon, the wavelength of the laser is constant; on the other hand stored beam energy is changed. Using a superconducting wiggler, a lot of MeV photons are radiated from the wiggler. With the radiated MeV-photon and beryllium target, neutrons are produced.
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| WG512 |
Longitudinal Diagnostics with THz Radiation
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radiation, diagnostics, electron, linac |
48 |
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- H. Delsim-Hashemi, P. Schmüser
Uni HH, Hamburg
- O. Grimm, B. Schmidt
DESY, Hamburg
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According to the FEL theory, the longitudinal charge distribution in an electron bunch has an important effect on lasing process. For FLASH at DESY, structures in the order of 10 μm play a crucial role in SASE production. The investigation of the electron bunch longitudinal charge distribution and its bunch to bunch changes is one of the most important issues for optimizing the operation of the machine and improving its stability. Single shot spectroscopic in the 10–200 μm regime is beyond the capability of existing spectroscopic diagnostic tools. This paper introduces a new diagnostics method based on fast spectrally resolved detection of coherent infrared radiation from electron bunches. Measurement results at FLASH with this spectrometer in both scanning mode and single shot mode are presented and discussed.
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Slides
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