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Title: Numerical simulations of early-stage dynamics of electron bunches emitted from plasmonic photocathodes

Journal Article · · Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment
 [1];  [1];  [2];  [3]
  1. Northern Illinois Univ., DeKalb, IL (United States)
  2. Radiabeam Technologies LLC, Santa Monica, CA (United States)
  3. Northern Illinois Univ., DeKalb, IL (United States); Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
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High-brightness electron sources are a key ingredient to the development of compact accelerator-based light sources. The electron sources are commonly based on (linear) photoemission process where a laser pulse with proper wavelength impinges on the surface of a metallic or semiconductor photocathode. Very recently, the use of plasmonic cathodes - cathodes with a nano-patterned surface - have demonstrated great enhancement in quantum efficiencies (Li et al., 2013 [1]). Alternatively, this type of photocathodes could support the formation of structured beams composed of transversely-separated beamlets. In this paper we discuss numerical simulations of the early-stage beam dynamics of the emission process from plasmonic cathodes carried out using the Warp (Friedman et al., 2014 [2]) framework. Furthermore, the model is used to investigate the properties of beams emitted from these photocathode and subsequently combined with particle-in-cell simulations to explore the imaging of cathode pattern after acceleration in a radiofrequency gun.

Research Organization:
Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), High Energy Physics (HEP)
Grant/Contract Number:
AC02-07CH11359; SC0009656
OSTI ID:
1463684
Alternate ID(s):
OSTI ID: 1550715
Report Number(s):
arXiv:1606.05383; FERMILAB-PUB-16-711-APC; 1471122; TRN: US1902328
Journal Information:
Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 865, Issue C; ISSN 0168-9002
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 3 works
Citation information provided by
Web of Science

References (10)

Surface-Plasmon Resonance-Enhanced Multiphoton Emission of High-Brightness Electron Beams from a Nanostructured Copper Cathode journal February 2013
Computational Methods in the Warp Code Framework for Kinetic Simulations of Particle Beams and Plasmas journal May 2014
Nanostructured Ultrafast Silicon-Tip Optical Field-Emitter Arrays journal August 2014
Multiphoton Photoemission from a Copper Cathode Illuminated by Ultrashort Laser Pulses in an rf Photoinjector journal February 2010
Plasmon-Enhanced Photocathode for High Brightness and High Repetition Rate X-Ray Sources journal February 2013
Novel methods in the Particle-In-Cell accelerator Code-Framework Warp journal January 2012
Intense Superradiant X Rays from a Compact Source Using a Nanocathode Array and Emittance Exchange journal June 2012
Tunable Subpicosecond Electron-Bunch-Train Generation Using a Transverse-To-Longitudinal Phase-Space Exchange Technique journal December 2010
Root‐mean‐square emittance of multiple beam systems journal July 1991
Tunable subpicosecond electron bunch train generation using a transverse-to-longitudinal phase space exchange technique text January 2010

Cited By (2)

Modeling of diamond field emitter arrays for a compact source of high brightness electron beams journal April 2019
Tailoring of an Electron-Bunch Current Distribution via Space-to-Time Mapping of a Transversely-Shaped Photoemission-Laser Pulse text January 2019

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Related Subjects

43 PARTICLE ACCELERATORS
Photoinjector
Plasmonic cathodes
Electron beam
Field emission
Photoemission