Mechanical and Thermal Analysis of an HTS Superconducting Magnet for an Achromatic Gantry for Proton Therapy

Abstract

The mechanical and thermal analysis of the superconducting magnets, forming an innovative fixed-field bending section for use in a proton therapy gantry, are here presented.The design concept has a large momentum acceptance, covering the full proton energy range of 70 to 220 MeV with fixed-field in the superconducting magnets, and uses a simple magnet geometry based on double-pancake high temperature superconductor coils. The main planned steps for the assembly and fabrication of the magnets are discussed. The mechanical and thermal analyses of the magnet are also discussed.

BELFEM: a special purpose finite element code for the magnetodynamic modeling of high-temperature superconducting tapes

“…In ferromagnetic materials moreover, the permeability is not constant, thus making the calculation of the time derivative in equation ( 6) difficult. One remedy is to use the Ampere-Maxwell law, equation (3), which introduces the magnetic vector potential a, the curl of which results in the magnetic flux density b. The weak form of this formulation reads…”

“…High-temperature superconducting (HTS) cables and magnets play a crucial role in nuclear fusion applications [1], particle accelerators [2], medical devices [3], and even spacecraft engines [4]. To ensure their safe operation, it is necessary to analyze and understand their electrodynamic and methods.…”