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J. Krzywinski

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Last Name: Krzywinski

Full Name: J. Krzywinski

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2 papers
title: Experimental demonstration of fresh bunch self-seeding in an X-ray free electron laser
format: journal article
publisher: Applied Physics Letters
year: 2017
7 authors: C. Emma | A. Lutman | M.W. Guetg | J. Krzywinski | A. Marinelli | J. Wu | C. Pellegrini
abstract: We report the generation of ultrahigh brightness X-ray pulses using the Fresh Bunch Self-Seeding (FBSS) method in an X-ray Free Electron Laser (XFEL). The FBSS method uses two different electron slices or bunches, one to generate the seed and the other to amplify it after the monochro- mator. This method circumvents the trade-off between the seed power and electron slice energy spread, which limits the efficiency of regular self-seeded FELs. The experiment, the performance of which is limited by existing hardware, shows FBSS feasibility, generating 5.5 keV photon pulses which are 9 fs long and of 7.3 10 5 bandwidth and 50 GW power. FBSS performance is com- pared with Self Amplified Spontaneous Emission/self-seeding performance, measuring a brightness increase of twelve/two times, respectively. In an optimized XFEL, FBSS can increase the peak power a hundred times more than state-of-the-art to multi-TW, opening new research areas for nonlinear science and single molecule imaging.
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title: First Observation of Self-Amplified Spontaneous Emission in a Free-Electron Laser at 109 nm Wavelength
format: journal article
publisher: Physical Review Letters
year: 2000
145 authors: J. Andruszkow | B. Aune | V. Ayvazyan | N. Baboi | R. Bakker | V. Balakin | D. Barni | A. Bazhan | M. Bernard | A. Bosotti | J. C. Bourdon | W. Brefeld | R. Brinkmann | S. Buhler | J. P. Carneiro | M. Castellano | P. Castro | L. Catani | S. Chel | Y. Cho | S. Choroba | E. R. Colby | W. Decking | P. Den Hartog | M. Desmons | M. Dohlus | D. Edwards | H. T. Edwards | B. Faatz | J. Feldhaus | M. Ferrario | M. J. Fitch | K. Floettman | M. Fouaidy | A. Gamp | T. Garvey | C. Gerth | M. Geitz | E. Gluskin | V. Gretchko | U. Hahn | W. H. Hartung | D. Hubert | M. Huening | R. Ischebek | M. Jablonka | J. M. Joly | M. Juillard | T. Junquera | P. Jurkiewicz | A. Kabel | J. Kahl | H. Kaiser | T. Kamps | V. V. Katelev | J. L. Kirchgessner | M. Koerfer | L. Kravchuk | G. Kreps | J. Krzywinski | T. Lokajczyk | R. Lange | B. Leblond | M. Leenen | J. Lesrel | M. Liepe | A. Liero | T. Limberg | R. Lorenz | H. H. Lu | F. H. Lu | C.4 Magne | M. Maslov | G. Materlik | A. Matheisen | J. Menzel | P. Michelato | W. D. Moeller | A. Mosnier | U. C. Mueller | O. Napoly | A. Novokhatski | M. Omeich | H. S. Padamsee | C. Pagani | F. Peters | B. Petersen | P. Pierini | J. Pflueger | P. Piot | B. Phung Ngoc | L. Plucinski | D. Proch | K. Rehlich | Sven Reiche | D. Reschke | I. Reyzl | J.B. Rosenzweig | J. Rossbach | S. Roth | E. L. Saldin | W. Sandner | Z. Sanok | H. Schlarb | G. Schmidt | P. Schmueser | J. R. Schneider | E. A. Schneidmiller | H. J. Schreiber | S. Schreiber | P. Schuett | J. Sekutowicz | L. Serafini | D. Sertore | S. Setzer | S. Simrock | B. Sonntag | B. Sparr | F. Stephan | V. A. Sytchev | S. Tazzari | F. Tazzioli | M. Tigner | M. Timm | M. Tonutti | E. Trakhtenberg | R. Treusch | D. Trines | V. Verzilov | T. Vielitz | V. Vogel | G. v. Walter | R. Wanzenberg | T. Weiland | H. Weise | J. Weisend | M. Wendt | M. Werner | M. M. White | I. Will | S. Wolff | M. V. Yurkov | K. Zapfe | P. Zhogolev | F. Zhou
abstract: We present the first observation of self-amplified spontaneous emission (SASE) in a free-electron laser (FEL) in the vacuum ultraviolet regime at 109 nm wavelength (11 eV). The observed free-electron laser gain (approximately 3000) and the radiation characteristics, such as dependency on bunch charge, angular distribution, spectral width, and intensity fluctuations, are all consistent with the present models for SASE FELs.
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