Plasma and Fusion Research

Volume 18, 2405055 (2023)

Regular Articles

Numerical Investigations on Superconducting Linear Acceleration System by Using Finite Element Method: Influence of Magnet Current on Pellet Velocity
Teruou TAKAYAMA, Ayumu SAITOH, Atsushi KAMITANI and Hiroaki NAKAMURA1)
Graduate School of Science and Engineering, Yamagata University, Yonezawa 992-8510, Japan
1)
National Institute for Fusion Science, Toki 509-5292, Japan
(Received 9 January 2023 / Accepted 17 May 2023 / Published 14 July 2023)

Abstract

The performance of a superconducting linear accelerator (SLA) system for pellet injection in fuel nuclear fusion reactors was investigated numerically. To this end, a numerical code using the finite element method was developed to analyze the shielding current density and dynamic motion of the high-temperature superconducting thin film of the SLA system. The computational results showed that applying an exponential current to the electromagnet, significantly improved the acceleration performance. It was concluded that SLA systems of the order of several hundred meters, and with realistic acceleration distances using the proposed currents can be designed.

Keywords

electromagnet, finite element analysis, numerical simulation, superconducting linear accelerator, system improvement

DOI: 10.1585/pfr.18.2405055

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