Numerical Investigations on Enhanced-Performance Superconducting Linear Acceleration System for Pellet Injection

Numerical Investigations on Superconducting Linear Acceleration System by Using Finite Element Method: Influence of Magnet Current on Pellet Velocity

“…The time evolution problem was reduced to solving a set of simultaneous ordinary differential equations by discretizing the initial boundary value problem with respect to space using finite element method (FEM) [2]. To speed up the analysis of the shield current density and avoid numerical instabilities, the 6-step 5th order Runge-Kutta method with adaptive step size control was applied to the ordinary differential equations.…”

“…Previous studies simulated an SLA system by solving the time evolution problem of the shielding current density in HTS thin film using an axisymmetric model [2][3][4]. For the estimation of the pellet velocity, the shielding current in the propulsion film attached to the pellet container and the dynamic motion of the film were analyzed.…”

“…In our previous study, we investigated increasing pellet velocity to minimize pellet acceleration time and dis-tance [2]. Our suggestions included increasing the maximum magnetic current, placing external magnets, and optimizing the magnetic geometry.…”

Numerical Approach to Enhanced-Performance of Superconducting Linear Accelerator Using Multiple-Electromagnets

“…Previous studies have numerically investigated the SLA system by solving the time evolution problem of the shielding current density in the thin film of an axisymmetric HTS [4,5,6]. The shielding current in the propulsion thin film attached to the pellet container was analyzed to estimate pellet velocity.…”

“…To increase the magnetic flux density, another electromagnet is placed outside the conventional electromagnet, with the same current being applied to both [4]. Furthermore, the time required for the pellet velocity to reach 5 km/s was compared between the conventional and the proposed models.…”