@inproceedings{51b5ca1b9d7e48cc9d26c3555f1ccead,
title = "Imaging the spatial modulation of a relativistic electron beam",
abstract = "We describe 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 a two-beam situation can be set up where, for a particular thickness of Si, nearly 100% of the electron beam is diffracted. Plans are underway to carry out experiments showing this effect in UCLA's ultrafast electron microscopy lab with 3.5 MeV electrons. We will select either the diffracted beam or the primary beam with a small aperture in the diffraction plane of a magnetic lens, and so record either the dark or bright field magnified image of the strips. Our first goal is to observe the nanopatterned beam at the image plane. We will then investigate various crystal thicknesses and sample orientations to maximize the contrast in the pattern and explore tuning the period of the modulation through varying magnification.",
author = "C. Zhang and Graves, {W. S.} and Malin, {L. E.} and Spence, {J. C.H.} and C. Limborg and Nanni, {E. A.} and D. Cesar and J. Maxson and A. Urbanowicz and P. Musumeci",
note = "Funding Information: We thank Pierre Stadelmann for supplying a relativistic version of the JEMS electron diffraction code and for valuable discussion and technical assistance. We gratefully acknowledge support from NSF Division of Physics (Accelerator Science) award 1632780, the National Science Foundation BioXFEL Science and Technology Center funded by NSF award 1231306, and DOE grant DE-AC02-76SF00515. 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. Travel support to IPAC{\textquoteright}17 was provided by the NSF Division of Physics (Accelerator Science Program) and the Division of Beam Physics of the American Physical Society. Funding Information: ∗ Work supported by NSF awards 1632780, 1415583, 1231306 and DOE award de-sc0009914 † czhan178@asu.edu Publisher Copyright: {\textcopyright} 2017 CC-BY-3.0 and by the respective authors; 8th International Particle Accelerator Conference, IPAC 2017 ; Conference date: 14-05-2017 Through 19-05-2017",
year = "2017",
month = jul,
language = "English (US)",
series = "IPAC 2017 - Proceedings of the 8th International Particle Accelerator Conference",
publisher = "Joint Accelerator Conferences Website - JACoW",
pages = "480--482",
booktitle = "IPAC 2017 - Proceedings of the 8th International Particle Accelerator Conference",
}