UCLA, Los Angeles, California, USA
SLAC, Menlo Park, California, USA
WEA1IO01
SLAC, Menlo Park, California, USA
RadiaBeam Systems, Santa Monica, California, USA
DESY, Hamburg, Germany
TUB, Beijing, People's Republic of China
| Paper | Title | Page |
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| TUB3CO03 | Demonstration of fresh slice self seeding in a hard X-ray free electron laser | 450 |
| SUPO11 | use link to see paper's listing under its alternate paper code | |
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| We discuss the first demonstration of fresh slice self seeding (FSSS) in a hard X-ray Free Electron Laser (XFEL). The FSSS method utilizes a single electron beam to generate a strong seed pulse and amplify it with a small energy spread electron slice. This extends the capability of self seeded XFELs by producing short pulses, not limited by the duration set by the self-seeding monochromator system, with high peak intensity. The scheme relies on using a parallel plate dechirper to impart a spatial chirp on the beam, and appropriate orbit control to lase with different electron beam slices before and after the self-seeding monochromator. The performance of the FSSS method is analyzed with start-to-end simulations for the Linac Coherent Light Source (LCLS). The simulations include the effect of the parallel plate dechirper and propagation of the radiation field through the monochromator. We also present results of the first successful demonstration of FSSS at LCLS. The radiation properties of FSSS X-ray pulses are compared with the Self-Amplified Spontaneous Emission (SASE) mode of FEL operation for the same electron beam parameters. | ||
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Slides TUB3CO03 [10.423 MB] | |
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Poster TUB3CO03 [3.275 MB] | |
| DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-NAPAC2016-TUB3CO03 | |
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WEA1IO01 |
Demonstration of Energy-Chirp Control in Relativistic Electron Bunches at LCLS Using a Corrugated Structure | |
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| An experimental study is presented of a corrugated structure that uses wakefields to remove linear energy correlation in a high energy (4.4 - 13.3 GeV) electron beam (a dechirper). Time-resolved measurements of both longitudinal and transverse wakefields of the device are presented and compared with simulations. We demonstrate flexible control of the LCLS FEL bandwidth and present novel uses of the device in addition to energy chirp control. | ||
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Slides WEA1IO01 [18.218 MB] | |
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