22–27 Sept 2019
Hyatt Regency Hotel Vancouver
Canada/Pacific timezone

Thu-Af-Or23-08: A Design Study on No-Insulation HTS Isochronous Cyclotron Magnet for Carbon Ion Therapy

26 Sept 2019, 18:15
15m
Regency CD

Regency CD

Speaker

Jeonghwan Park (Seoul National University)

Description

Provided that a cyclotron system requires DC magnetic field, the no-insulation (NI) HTS magnet may be a good candidate as it may enable the cyclotron magnet to be more compact and reliable, yet generate a substantially higher magnetic field than its insulated counterpart. Here we report on a design study of a NI HTS cyclotron magnet for acceleration of carbon ions under isochronous condition up to an energy of ~400MeV/u. For beam stability, HTS coils having a designated field profile with the so-called “hill” and “valley” structure is proposed. After the initial design is completed, the proposed cyclotron magnet is analyzed using a 3D finite element method. This paper presents the magnet design and performance analysis results that include: (1) electromagnetic design of radially increasing magnetic field, a.k.a isochronous magnetic field; (2) charging-discharging scenarios; (3) mechanical stress analysis with potential use of an overband; and (4) post-quench behavior of the NI HTS coils.

Acknowledgement
This work was supported by the National Research Foundation of Korea as a part of Mid-Career Research Program (No. 2018R1A2B3009249).

Primary author

Jeonghwan Park (Seoul National University)

Co-authors

Garam Hahn (Pohang Accelerator Laboratory) Soun Pil Kwon (NFRI) HyunJung Lee (National Fusion Research Institute) Yong Chu (National Fusion Research Institute) Seungyong Hahn (Seoul National University)

Presentation materials