@inproceedings{dacedc973cbe46b7bb6fa9d737224fc3,
title = "Experiments inelectron beam nanopatterning",
abstract = "We report on experiments in nanopatterning electron beams from a photoinjector as a first step toward a compact XFEL (CXFEL). The nanopatterning is produced by Bragg diffraction of relativistic electron beams through a patterned Si crystal consisting of alternating thick and thin strips to produce nanometer-scale electron density modulations. Multi-slice simulations show that the target can be oriented for a two-beam condition where nearly 80% of the elastically scattered electron beam is diffracted into the 220 Bragg peak. An experiment at the two-beam condition measurement has been carried out at the SLAC UED facility showing this effect with 2.26 MeV electrons. We successfully proved a large portion of the main beam is diffracted into 220 spot by tuning the orientation of the sample. Future plans at UCLA are to observe the nanopatterned beam, and to investigate various grating periods, crystal thicknesses, and sample orientations to maximize the contrast in the pattern and explore tuning the period of the modulation. The SLAC measurement results will be presented along with design of the UCLA experiments.",
author = "C. Zhang and Graves, {W. S.} and Malin, {L. E.} and Spence, {J. C.H.} and Li, {R. K.} and Nanni, {E. A.} and X. Shen and Weathersby, {S. P.} and J. Yang and D. Cesar and J. Maxson and P. Musumeci and A. Urbanowicz",
note = "Funding Information: ∗ This work was supported by NSF Accelerator Science awards 1632780 and 1415583, NSF BioXFEL STC award 1231306, and DOE contract DE-AC02-76SF00515. † czhan178@asu.edu Funding Information: 76SF00515. The UCLA component of this work is partially supported by STROBE: A National Science Foundation Science and Technology Center under Grant No. DMR 1548924 and by DOE STTR grant No. DE-SC0013115. Funding Information: We gratefully acknowledge support from the National Science Foundation Division of Physics (Accelerator Science) award 1632780, the NSF BioXFEL Science and Technology Center funded by award 1231306, and DOE grant DE-AC02- Figure 6: A knife-edge moving in one direction to block direct beam. Publisher Copyright: {\textcopyright} Proceedings of the 38th International Free-Electron Laser Conference, FEL 2017. All rights reserved.; 38th International Free-Electron Laser Conference, FEL 2017 ; Conference date: 20-08-2017 Through 25-08-2017",
year = "2017",
doi = "10.18429/JACoW-FEL2017-TUP038",
language = "English (US)",
series = "Proceedings of the 38th International Free-Electron Laser Conference, FEL 2017",
publisher = "JACoW Publishing",
pages = "320--322",
editor = "Kip Bishofberger and Carlsten Bruce and Schaa, {Volker RW}",
booktitle = "Proceedings of the 38th International Free-Electron Laser Conference, FEL 2017",
}