Coherent Optical Signatures of Electron Microbunching in Laser-Driven Plasma Accelerators

Lumpkin, A. H.; LaBerge, M.; Rule, D. W.; Zgadzaj, R.; Hannasch, A.; Zarini, O.; Bowers, B.; Irman, A.; Couperus Cabadağ, J. P.; Debus, A.; Köhler, A.; Schramm, U.; Downer, M. C.

doi:10.1103/PhysRevLett.125.014801

Title: Coherent Optical Signatures of Electron Microbunching in Laser-Driven Plasma Accelerators

Journal Article · Thu Jul 02 00:00:00 EDT 2020 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.125.014801· OSTI ID:1635746

Lumpkin, A. H.; LaBerge, M.; Rule, D. W.; Zgadzaj, R.; Hannasch, A.;

;

; Irman, A.;

; Debus, A.;

;

We report observations of coherent optical transition radiation interferometry (COTRI) patterns generated by microbunched ~200-MeV electrons as they emerge from a laser-driven plasma accelerator. The divergence of the microbunched portion of electrons, deduced by comparison to a COTRI model, is ~9× smaller than the ~3 mrad ensemble beam divergence, while the radius of the microbunched beam, obtained from COTR images on the same shot, is <3 μm. The combined results show that the microbunched distribution has estimated transverse normalized emittance ~0.4 mmmrad.

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Research Organization:: Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States); Univ. of Texas, Austin, TX (United States)

Sponsoring Organization:: USDOE Office of Science (SC), High Energy Physics (HEP); Alexander von Humboldt Foundation; Helmholtz Association

Grant/Contract Number:: AC02-07CH11359; SC0011617

OSTI ID:: 1635746

Alternate ID(s):: OSTI ID: 1560846; OSTI ID: 1635645

Report Number(s):: arXiv:1907.05078; FERMILAB-PUB-19-344-AD; PRLTAO; 014801

Journal Information:: Physical Review Letters, Journal Name: Physical Review Letters Vol. 125 Journal Issue: 1; ISSN 0031-9007

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 13 works

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