Picture of UK Houses of Parliament

Leading national thinking on politics, government & public policy through Open Access research

Strathprints makes available scholarly Open Access content by researchers in the School of Government & Public Policy, based within the Faculty of Humanities & Social Sciences.

Research here is 1st in Scotland for research intensity and spans a wide range of domains. The Department of Politics demonstrates expertise in understanding parties, elections and public opinion, with additional emphases on political economy, institutions and international relations. This international angle is reflected in the European Policies Research Centre (EPRC) which conducts comparative research on public policy. Meanwhile, the Centre for Energy Policy provides independent expertise on energy, working across multidisciplinary groups to shape policy for a low carbon economy.

Explore the Open Access research of the School of Government & Public Policy. Or explore all of Strathclyde's Open Access research...

Investigation on the optimal magnetic field of a cusp electron gun for a W-band gyro-TWA

Zhang, Liang and He, Wenlong and Donaldson, Craig R. and Cross, Adrian W. (2018) Investigation on the optimal magnetic field of a cusp electron gun for a W-band gyro-TWA. Physics of Plasmas. pp. 1-6. ISSN 1070-664X

[img]
Preview
Text (Zhang-etal-POP-2018-Investigation-on-the-optimal-magnetic-field-of-a-cusp)
Zhang_etal_POP_2018_Investigation_on_the_optimal_magnetic_field_of_a_cusp.pdf
Final Published Version

Download (795kB)| Preview

    Abstract

    High efficiency and broadband operation of a gyrotron traveling wave amplifier (gyro-TWA) requires a high-quality electron beam with low-velocity spreads. The beam velocity spreads are mainly due to the differences of the electric and magnetic fields that the electrons withstand the electron gun. This paper investigates the possibility to decouple the design of electron gun geometry and the magnet system while still achieving optimal results, through a case study of designing a cusp electron gun for a W-band gyro-TWA. A global multiple-objective optimization routing was used to optimize the electron gun geometry for different predefined magnetic field profiles individually. Their results were compared and the properties of the required magnetic field profile are summarized.