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Title: Demonstration of Transport of a Patterned Electron Beam Produced by Diamond Pyramid Cathode in an rf Gun

Journal Article · · Applied Physics Letters
DOI: https://doi.org/10.1063/1.5128109 · OSTI ID:1774426
ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1];  [2];  [2];  [2];  [2];  [2];  [2];  [2];  [2];  [3];  [4]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  2. Argonne National Lab. (ANL), Lemont, IL (United States)
  3. Euclid Beamlabs LLC, Bolingbrook, IL (United States)
  4. Illinois Institute of Technology, Chicago, IL (United States)
+ Show Author Affiliations

In this work, we have demonstrated generation and transport of a patterned electron beam from a Diamond Field-Emitter Array (DFEA) cathode in a radio frequency (rf) gun. DFEAs are arrays of micrometer-scale pyramids with nanometer-scale tips. They can be fabricated with base widths ranging from 3 μm to 25 μm and pitches as small as 5 μm. They have an inherent 1:0.7 base to height ratio. DFEAs operate as field-emitter cathodes and potentially produce intrinsically shaped electron beams, which are of interest for a number of accelerator applications. We report on the results of a recent experiment in which a beam, consisting of several beamlets, was produced from a DFEA cathode in an rf gun and transported 2.54 m along a beam line. A macrobunch charge of 60 pC was measured at a cathode field gradient of 15.1 MV/m.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States). Center for Nanoscale Materials (CNM); Los Alamos National Laboratory (LANL), Los Alamos, NM (United States); Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
Sponsoring Organization:
USDOE; USDOE Laboratory Directed Research and Development (LDRD) Program; USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE Office of Science (SC), High Energy Physics (HEP)
Grant/Contract Number:
89233218CNA000001; AC02-06CH11357; AC52-06NA25396; NA0003525
OSTI ID:
1774426
Report Number(s):
LA-UR--19-23845
Journal Information:
Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 2 Vol. 116; ISSN 0003-6951
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English

References (25)

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