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  Compression of high-density 0.16 pC electron bunches through high field gradients for ultrafast single shot electron diffraction: The Compact RF Gun

Daoud, H., Floettmann, K., & Miller, R. J. D. (2017). Compression of high-density 0.16 pC electron bunches through high field gradients for ultrafast single shot electron diffraction: The Compact RF Gun. Structural Dynamics, 4(4): 044016. doi:10.1063/1.4979970.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002D-08BB-5 Version Permalink: http://hdl.handle.net/21.11116/0000-0001-EAD8-4
Genre: Journal Article

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Compression of high-density 0.16 pC electron bunches through high field gradients for.pdf (Publisher version), 796KB
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https://dx.doi.org/10.1063/1.4979970 (Publisher version)
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 Creators:
Daoud, Hazem1, Author
Floettmann, Klaus2, Author
Miller, R. J. Dwayne1, 3, Author              
Affiliations:
1Departments of and Chemistry and Physics, University of Toronto, Canada, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada, ou_persistent22              
2Deutsches Elektronen-Synchrotron (DESY) Hamburg, Germany, Notkestrasse 85, 22603 Hamburg, Germany, ou_persistent22              
3Miller Group, Atomically Resolved Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_1938288              

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Free keywords: Coherence Cathodes Electron diffraction Space charge effects Electric fields
 Abstract: We present an RF gun design for single shot ultrafast electron diffraction experiments that can produce sub-100 fs high-charge electron bunches in the 130 keV energy range. Our simulations show that our proposed half-cell RF cavity is capable of producing 137 keV, 27 fs rms (60 fs FWHM), 106 electron bunches with an rms spot size of 276 μm and a transverse coherence length of 2.0 nm. The required operation power is 9.2 kW, significantly lower than conventional rf cavity designs and a key design feature. This electron source further relies on high electric field gradients at the cathode to simultaneously accelerate and compress the electron bunch to open up new space-time resolution domains for atomically resolved dynamics.

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Language(s): eng - English
 Dates: 2017-03-292017-02-162017-03-012017-04-12
 Publication Status: Published online
 Pages: 9
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1063/1.4979970
 Degree: -

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Title: Structural Dynamics
Source Genre: Journal
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Publ. Info: Melville, NY : American Institute of Physics
Pages: - Volume / Issue: 4 (4) Sequence Number: 044016 Start / End Page: - Identifier: Other: 2329-7778
CoNE: /journals/resource/2329-7778