Design and simulation of a thermionic cusp gun for a gyro-TWA

Rafferty, EG and He, W and Whyte, CG and Young, AR and Ronald, K and Cross, AW and Phelps, ADR and Thomson, JE; Abe, DK and Nusinovich, GS, eds. (2006) Design and simulation of a thermionic cusp gun for a gyro-TWA. In: UNSPECIFIED.

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Abstract

A thermionic cusp gun is proposed for use in a 3 MW second harmonic X-band gyro-TWA with a helically corrugated waveguide interaction region. The passage of an electron beam through a non-adiabatic magnetic field reversal converts part of the electron beam's axial velocity into axis-encircling transverse velocity. The paper presents the design and simulation of this cusp-based electron gun, yielding a 12 MW, 81.5 A axis-encircling beam with an axial velocity spread Delta v(z) <15% suitable for use in harmonic gyro-devices.

ORCID iDs

Rafferty, EG, He, W ORCID logoORCID: https://orcid.org/0000-0001-7018-0527, Whyte, CG ORCID logoORCID: https://orcid.org/0000-0002-5431-2443, Young, AR ORCID logoORCID: https://orcid.org/0000-0002-3494-1242, Ronald, K ORCID logoORCID: https://orcid.org/0000-0002-8585-0746, Cross, AW ORCID logoORCID: https://orcid.org/0000-0001-7672-1283, Phelps, ADR ORCID logoORCID: https://orcid.org/0000-0002-1100-1012 and Thomson, JE; Abe, DK and Nusinovich, GS