We describe the design concepts for a potential future source of femtosecond x-ray pulses based on synchrotron radiation production in a recirculating electron linac. Using harmonic cascade free-electron lasers (FEL's) and spontaneous emission in short-period, narrow-gap insertion devices, a broad range of photon energies are available with tunability from EUV to hard x-ray regimes. Photon pulse durations are controllable and range from 10 fs to 200 fs, with fluxes 10⁷-10¹² photons per pulse. Full spatial and temporal coherence is obtained for EUV and soft X-rays. A fiber laser master oscillator and stabilized timing distribution scheme are proposed to synchronize accelerator rf systems and multiple lasers throughout the facility, allowing timing synchronization between sample excitation and X-ray probe of approximately 20-50 fs.

Date Published: 10 November 2004
PDF: 12 pages
Proc. SPIE 5534, Fourth Generation X-Ray Sources and Optics II, (10 November 2004); doi: 10.1117/12.555946

Published in SPIE Proceedings Vol. 5534:
Fourth Generation X-Ray Sources and Optics II
Sandra G. Biedron; Wolfgang Eberhardt; Tetsuya Ishikawa; Roman O. Tatchyn, Editor(s)