Fabrication and Experiments on a 1/2-Scale Demonstration NI-REBCO Coil System of a Skeleton Cyclotron for Cancer Therapy

We have been developing a high-temperature superconducting skeleton cyclotron (HTS-SC) as an ultra-compact and high-intensity accelerator that can produce an alpha-ray emitting radioisotope ( 211 At) for targeted α-particle therapy, which is expected to be effective in treating advanced cancer. In a...

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Bibliographic Details
Published inIEEE transactions on applied superconductivity Vol. 34; no. 5; pp. 1 - 5
Main Authors Kumagai, Rui, Ishiyama, Atsushi, Ueda, Hiroshi, Noguchi, So, Watanabe, Tomonori, Fukuda, Mitsuhiro, Nishijima, Gen, Yoshida, Jun
Format Journal Article
LanguageEnglish
Published New York IEEE 01.08.2024
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Alpha rays
Cancer
Coils (windings)
Cooling
Current density
Cyclotrons
Excitation
Fabrication
High current
High temperature
Magnetic fields
no-insulation coil technology
Radioisotopes
REBCO coil system
Scale models
targeted alpha-particle therapy
Temperature
Thermal stability
yoroi coil structure
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Summary:We have been developing a high-temperature superconducting skeleton cyclotron (HTS-SC) as an ultra-compact and high-intensity accelerator that can produce an alpha-ray emitting radioisotope ( 211 At) for targeted α-particle therapy, which is expected to be effective in treating advanced cancer. In addition, multiple air-core REBCO coils without an iron core allow variable output energy. Furthermore, a new coil technology integrating 5-High basic technologies (high field, high field accuracy, high mechanical strength, high thermal stability, and high current density) will be applied to the REBCO coil system for the HTS-SC. As a preliminary step, a REBCO coil system for an ultra-baby-skeleton-cyclotron (UBSC), which is a 1/2-scale demonstration model, was fabricated to evaluate magnetic field accuracy, coil deformation during cooling and excitation, and thermal stability of the HTS-SC. The Yoroi coil structure was adopted for the UBSC for high mechanical strength and a no-insulation (NI) coil winding technology for both high thermal stability and high current density. In this paper, we report results on cooling and excitation tests using the 1/2-scale model NI-REBCO coil system.
ISSN:1051-8223
1558-2515
DOI:10.1109/TASC.2023.3338594