Contribution to a conference proceedings/Contribution to a book

PHPPUBDB-26573

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Profiling structured beams using injected aerosols

Loh, N. D. ; Starodub, D. ; Lomb, L. ; Hampton, C. Y. ; Martin, A. V. ; Sierra, R. G. ; Barty, A. ; Aquila, A. ; Schulz, J. ; Steinbrener, J. ; Shoeman, R. L. ; Kassemeyer, S. ; Bostedt, C. ; Bozek, J. ; Epp, S. W. ; Erk, B. ; Hartmann, R. ; Rolles, D. ; Rudenko, A. ; Rudek, B. ; Foucar, L. ; Kimmel, N. ; Weidenspointner, G. ; Hauser, G. ; Holl, P. ; Pedersoli, E. ; Liang, M. ; Hunter, M. S. ; Gumprecht, L. ; Coppola, N. ; Wunderer, C. ; Graafsma, H. ; Maia, F. R. N. C. ; Ekeberg, T. ; Hantke, M. ; Fleckenstein, H. ; Hirsemann, H. ; Nass, K. ; White, T. A. ; Tobias, H. J. ; Farquar, G. R. ; Benner, W. H. ; Hau-Riege, S. ; Reich, C. ; Hartmann, A. ; Soltau, H. ; Marchesini, S. ; Bajt, S. ; Barthelmess, M. ; Strueder, L. ; Ullrich, J. ; Bucksbaum, P. ; Hodgson, K. O. ; Frank, M. ; Schlichting, I. ; Chapman, H. N. ; Bogan, M. J. ; Moeller, S. P. (Editor) ; Yabashi, M. (Editor) ; Hau-Riege, S. P. (Editor) ; DESY

2012
SPIE San Diego

This record in other databases:        

Please use a persistent id in citations: doi:10.1117/12.930075

Abstract: Profiling structured beams produced by X-ray free-electron lasers (FELs) is crucial to both maximizing signal intensity for weakly scattering targets and interpreting their scattering patterns. Earlier ablative imprint studies describe how to infer the X-ray beam profile from the damage that an attenuated beam inflicts on a substrate. However, the beams in-situ profile is not directly accessible with imprint studies because the damage profile could be different from the actual beam profile. On the other hand, although a Shack-Hartmann sensor is capable of in-situ profiling, its lenses may be quickly damaged at the intense focus of hard X-ray FEL beams. We describe a new approach that probes the in-situ morphology of the intense FEL focus. By studying the translations in diffraction patterns from an ensemble of randomly injected sub-micron latex spheres, we were able to determine the non-Gaussian nature of the intense FEL beam at the Linac Coherent Light Source (SLAC National Laboratory) near the FEL focus. We discuss an experimental application of such a beam-profiling technique, and the limitations we need to overcome before it can be widely applied.

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Contributing Institute(s):

1. CFEL-Coherent X-Ray Imaging (FS-CFEL-1)
2. Strukturdynamik Chemischer Systeme (FS-SCS)

Research Program(s):

1. XFEL In-house research / external facilities (POF2-54G17) (POF2-54G17)
2. Experiments at CFEL (POF2-544) (POF2-544)

Experiment(s):

1. Measurement at external facility
2. Experiments at CFEL

Appears in the scientific report 2012

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Database coverage:
No Author Disambiguation

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