DAPNIA-04-261 |
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ARC-EN-CIEL : a Proposal for a 4th Generation Light Source in France |
Marie-Emmanuelle Couprie, David Garzella, Bernard Gilquin, Pascal Monot, Laurent Nahon (CEA/DSM), Michel Desmons, Marcel Jablonka, Francois Méot, Alban Mosnier (CEA/DSM/DAPNIA), Antoine Rousse (LOA, Palaiseau), Jean-Raphael Marquès (LULI, Palaiseau), Jean-Michel Ortega (LURE, Orsay), Oleg Chubar, Alexandre Loulergue (SOLEIL) |
An accelerator based 4th generation source is proposed to provide the user community with coherent femtosecond light pulses in the UV to X ray range. The project is based on a CW 0.7-1 GeV superconducting linac delivering high charge, subpicosecond, low emittance electron bunches with high repetition rate. A High Gain Harmonic Generation setup, seeded with high harmonics in gases, will cover a spectral range down to 0.8 nm. SASE Radiation will also be provided down to 5 nm. In addition, two beam loops are foreseen either to enhance the energy to 1.4-2 GeV or to increase the beam current in using the energy recovery technique. They will accommodate fs synchrotron radiation sources in the IR, VUV and X ray ranges together with a FEL oscillator in the 10 nm range. Main features of the project and scientific goals are given. |