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Hard X-ray Self-seeding for Xfels: towards Coherent Fel Pulses
| Content Provider | Semantic Scholar |
|---|---|
| Author | Geloni, G. Saldin, Evgeni |
| Copyright Year | 2012 |
| Abstract | Start-up from shot noise limits the longitudinal coherence of typical SASE XFEL pulses. Self-seeding schemes provide an elegant solution to this problem. However, their applicability to the baseline of already working or designed XFELs is subject to constraints, including minimal changes to the baseline design and possibility to recover the baseline mode of operation. Here we discuss a recently proposed single-bunch self-seeding scheme for hard X-rays. The physical principles of this scheme can be extended to soft X-rays as well. The method is based on a particular kind of monochromator, which relies on the use of a single crystal in Bragg-transmission geometry. In its simplest configuration, the setup consists of an input undulator and an output undulator separated by such monochromator. Several, more advanced configurations can be considered. For example, for high repetition rates of the X-ray pulses, or when a high spectral purity of the output radiation is requested, the simplest two-undulator configuration is not optimal: three or more undulators separated by monochromators can then be used. Exemplifications, based on facilities working or under construction will be discussed. These proceedings are based on [1]-[5], to which we address the interested reader for further information and references. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://accelconf.web.cern.ch/accelconf/FEL2011/papers/tuoai1.pdf |
| Alternate Webpage(s) | http://accelconf.web.cern.ch/accelconf/FEL2011/talks/tuoai1_talk.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
