• Open Access

Design, fabrication, and tuning of a THz-driven electron gun

Samantha M. Lewis, Julian Merrick, Mohamed A. K. Othman, Andrew Haase, Sami Tantawi, and Emilio A. Nanni
Phys. Rev. Accel. Beams 25, 121301 – Published 14 December 2022

Abstract

We present the design, fabrication, and cold testing of a THz-driven field emission electron gun. The gun is designed as a two-cell standing-wave structure with a copper tip inserted halfway into the first cell that serves as the field emission source. It is powered by a 110 GHz gyrotron and is expected to produce 51 fC, 360 keV electron bunches with an input power of 500 kW. Several gun structures were fabricated using a high precision diamond turned mandrel and copper electroforming. The frequencies of the cavity resonances were mechanically tuned using azimuthal compression.

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  • Received 31 March 2022
  • Accepted 18 November 2022

DOI:https://doi.org/10.1103/PhysRevAccelBeams.25.121301

Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.

Published by the American Physical Society

Physics Subject Headings (PhySH)

Accelerators & Beams

Authors & Affiliations

Samantha M. Lewis*, Julian Merrick, Mohamed A. K. Othman, Andrew Haase, Sami Tantawi, and Emilio A. Nanni

  • SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA

  • *smlewis@fnal.gov

Article Text

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Issue

Vol. 25, Iss. 12 — December 2022

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