Phys. Rev. ST Accel. Beams 8, 040701 (2005) [6 pages]Method of an enhanced self-amplified spontaneous emission for x-ray free electron lasers
We describe a technique by which an energy modulation of electrons via interaction with a laser pulse in a wiggler magnet is used for a significant increase of the electron peak current prior to entering a long self-amplified spontaneous emission (SASE) free electron laser undulator. This results in a reduction of the gain length for the SASE process and a modification of the structure of the output x-ray radiation. It also temporally links the output x-ray pulse to the initial laser pulse, thus providing an opportunity for accurate synchronization between the laser pump pulse and x-ray probe pulse for pump-probe experiments. This article is available under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. © 2005 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevSTAB.8.040701
DOI:
10.1103/PhysRevSTAB.8.040701
PACS:
41.50.+h, 41.60.Cr, 42.55.Vc, 52.59.–f
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