Finite-element, Superconductivity, AC losses, multi-scale
Abstract :
[en] The NHa C400 is the first compact superconducting cyclotron used for carbon therapy in the world. Carbon therapy is particularly effective for treating radiation-resistant
tumors, as compared to more conventional radiotherapy techniques. In this work, a 3D
finite element model of the Nb-Ti coil has been developed using the open-source solver GetDP.
First, an accurate representation of the DC magnetic fields, required for beam dynamics computation, is obtained. Second, analytical models of increasing complexity for hystere-
sis losses in the superconducting filaments are investigated. For discussing their accuracy, a single filament model has been developed. Third, the heat loss in the Nb-Ti coils during energization of the cyclotron is evaluated based on a multi-scale approach involving the single filament model.
Disciplines :
Materials science & engineering
Author, co-author :
Denis, Louis ; Université de Liège - ULiège > Faculté des Sciences Appliquées > Master ingé. civ. phys., à fin.
Vanderheyden, Benoît ; Université de Liège - ULiège > Département d'électricité, électronique et informatique (Institut Montefiore) > Electronique et microsystèmes
Geuzaine, Christophe ; Université de Liège - ULiège > Département d'électricité, électronique et informatique (Institut Montefiore) > Applied and Computational Electromagnetics (ACE)
Nuttens, Vincent; Ion Beam Applications SA, Louvain-la-neuve, Belgium
Kleeven, Willem; Ion Beam Applications SA, Louvain-la-neuve, Belgium
Velten, Philippe; Normandy Hadrontherapy, Caen, France
Language :
English
Title :
Finite element study of AC losses in the superconducting coil of the NHa C400 cyclotron
Publication date :
26 September 2023
Number of pages :
3
Event name :
14th International Particle Accelerator Conference
