Nanometer scale coherent current modulation via a nanotip cathode array and emittance exchange

E. A. Nanni, W. S. Graves, P. Piot

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Scopus citations

Abstract

We present particle-in-cell (PIC) simulations of electron bunches with nm scale longitudinal modulation produced using a compact 2-20 MeV LINAC. The modulation is initially imparted in the transverse dimension of the electron bunch with a nano-patterned photo-emitter in an X-band RF gun with 2 MeV exit energy. The electron bunch passes through a 1 m standing wave X-band LINAC which can raise the beam energy up to 20 MeV. The transverse modulation is exchanged into the longitudinal dimension using a double dog-leg emittance exchange setup with a 5 cell RF deflector cavity. The modulation pitch can be tuned by adjusting the spacing of the nano-patterned photo-emitter or magnification of the transverse pitch with electron optics. The electron beam parameters are optimized to produce coherent XFEL radiation upon interacting with a laser undu-lator.

Original languageEnglish (US)
Title of host publicationIPAC 2014
Subtitle of host publicationProceedings of the 5th International Particle Accelerator Conference
PublisherJoint Accelerator Conferences Website (JACoW)
Pages1952-1955
Number of pages4
ISBN (Electronic)9783954501328
StatePublished - Jul 1 2014
Externally publishedYes
Event5th International Particle Accelerator Conference, IPAC 2014 - Dresden, Germany
Duration: Jun 15 2014Jun 20 2014

Publication series

NameIPAC 2014: Proceedings of the 5th International Particle Accelerator Conference

Other

Other5th International Particle Accelerator Conference, IPAC 2014
CountryGermany
CityDresden
Period6/15/146/20/14

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Fingerprint Dive into the research topics of 'Nanometer scale coherent current modulation via a nanotip cathode array and emittance exchange'. Together they form a unique fingerprint.

  • Cite this

    Nanni, E. A., Graves, W. S., & Piot, P. (2014). Nanometer scale coherent current modulation via a nanotip cathode array and emittance exchange. In IPAC 2014: Proceedings of the 5th International Particle Accelerator Conference (pp. 1952-1955). (IPAC 2014: Proceedings of the 5th International Particle Accelerator Conference). Joint Accelerator Conferences Website (JACoW).