MOP055

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URL	https://doi.org/10.18429/JACoW-NAPAC2025-MOP055
Title	Low-charge, high-resolution beamline preparation for the nanopatterned microbunching experiment at Argonne Wakefield Accelerator
Authors	R. Margraf-O'Neal, A. Ody, J. Power, J. Hlavenka Argonne National Laboratory B. Temizel Ozdemir, A. DeSimone, G. Ha Northern Illinois University G. Andonian, A. Parrack, J. Rosenzweig University of California, Los Angeles B. Carlsten, H. Xu, N. Yampolsky Los Alamos National Laboratory A. Halavanau, N. Majernik SLAC National Accelerator Laboratory J. Maxson Cornell University R. Ryne Lawrence Berkeley National Laboratory M. Yadav Old Dominion University, University of California, Los Angeles
Abstract	The emittance exchange (EEX) beamline at the Argonne Wakefield Accelerator (AWA) is designed to transfer properties of an electron beam phase space between the transverse and longitudinal planes. Recently, it has been proposed this beamline could be used to convert a microscale transverse modulation created by a TEM grid into a microbunch train in the longitudinal plane. Such a technique would be useful for obtaining nano-scale microbunching that does not rely on the sensitive process of FEL gain. This new approach has been proposed to enable development of a compact free-electron laser at Arizona State, greatly reducing size and cost compared with existing short wavelength FELs. To perform an exploratory demonstration of this concept at AWA, this experiment requires low normalized emittance (~50 nm·rad), low charge (~1pC) electron bunches, and transverse diagnostics with high-resolution (1-3 microns) and high-light-collection to resolve the modulation on the electron beam. This report will give a progress update on preparing the necessary beams and diagnostics at AWA for an emittance exchange experiment that would produce 100s of nm scale microbunches.
Paper	download: MOP055.pdf
Cite	BibTeX, LaTeX, Text/Word, RIS, EndNote
Conference	6th North American Particle Accel. Conf. (NAPAC2025)
Series
Location	Sacramento, CA, USA
Date	10-15 Aug 2025
Publisher	JACoW Publishing, Geneva, Switzerland
Editorial Board	Tor O. Raubenheimer (SLAC), Roark A. Marsh (LLNL), Eric Prebys (UC Davis), Ling Wang (MSU), Petr M. Anisimov (LANL), Kip Bishofberger (LANL), Gustavo Bruno (ANL), Zhichu Chen (SARI), Jan Chrin (PSI), Kelly Jaje (ANL), Jaeyu Lee (POSTECH), Magdalena Montes-Loera (SLAC), Mary Saethre (PHENOTYPE), Tasha Summers (SLAC), Kent Wootton (ANL)
Online ISBN	978-3-95450-261-5
Online ISSN	2673-7000
Received	08 August 2025
Revised	12 August 2025
Accepted	14 August 2025
Issued	28 January 2026
DOI	10.18429/JACoW-NAPAC2025-MOP055
Pages	173-176
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