Cyclotrons2016 - List of Authors (Ueda, H.)

Paper

Title

Page

Development of HTS Magnets for Accelerators

294

K. Hatanaka, M. Fukuda, S. Hara, K. Kamakura, K. Shimada, Y. Yasuda, T. Yorita
RCNP, Osaka, Japan
H. Ueda
Okayama University, Okayama, Japan

At RCNP, we have been developing magnets utilizing first generation HTS wire for this decade. HTS materials have advantages over LTS materials. Magnets can be operated at 20 K or higher temperature and cooled by cryocoolers. The cooling structure becomes simpler and the cooling power of a cooler is high. Owing to a large margin in operating temperature, it is possible to excite HTS magnets by AC or pulsed currents without quenching. Three model magnets were fabricated; a mirror coil for an ECR ion source, two sets of race track coils for a scanning magnet, and a 3T super-ferric dipole magnet having a negative curvature. They were excited with AC and pulse currents as well as DC currents and their performance was investigated. After successful tests of proto type models, two magnets have been fabricated for practical use. A cylindrical magnet generates a magnetic field higher than 3.5 T at the center to polarized 210 neV ultra cold neutrons. A dipole magnet is excited by pulse currents in order to deliver accelerated beams to two target stations by time sharing. Their design and operational performance are discussed.

Slides THB03 [5.621 MB]

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THP12

Status of the RCNP Cyclotron Facility

M. Fukuda, S. Hara, K. Hatanaka, K. Kamakura, H.W. Koay, T. Kume, S. Morinobu, K. Nagayama, T. Saito, K. Shimada, H. Tamura, R. Yamanoshita, Y. Yasuda, T. Yorita
RCNP, Osaka, Japan
H. Ueda
Okayama University, Okayama, Japan

The Research Center for Nuclear Physics (RCNP) cyclotron facility is equipped with the K140 AVF cyclotron and K400 ring cyclotron. The cascade cyclotron system provides high quality beams for precise experiments in nuclear physics using the high resolution spectrograph Grand-RAIDEN. Recently secondarily produced DC muons has become available. Radio-isotope production is regularly carried out for fundamental research in nuclear chemistry and medicine. The upgrade program of the cyclotron facility was carried out to reduce deterioration of cyclotron equipment and to construct new beam lines for experiments using muons and high quality beams. A bending magnet using a high-temperature superconducting wire was developed for switching between two beam lines. Design of a new type of high-temperature superconducting compact AVF cyclotron is underway to promote targeted alpha-particle therapy.

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Paper	Title	Page
THB03	Development of HTS Magnets for Accelerators	294
	K. Hatanaka, M. Fukuda, S. Hara, K. Kamakura, K. Shimada, Y. Yasuda, T. Yorita RCNP, Osaka, Japan H. Ueda Okayama University, Okayama, Japan
	At RCNP, we have been developing magnets utilizing first generation HTS wire for this decade. HTS materials have advantages over LTS materials. Magnets can be operated at 20 K or higher temperature and cooled by cryocoolers. The cooling structure becomes simpler and the cooling power of a cooler is high. Owing to a large margin in operating temperature, it is possible to excite HTS magnets by AC or pulsed currents without quenching. Three model magnets were fabricated; a mirror coil for an ECR ion source, two sets of race track coils for a scanning magnet, and a 3T super-ferric dipole magnet having a negative curvature. They were excited with AC and pulse currents as well as DC currents and their performance was investigated. After successful tests of proto type models, two magnets have been fabricated for practical use. A cylindrical magnet generates a magnetic field higher than 3.5 T at the center to polarized 210 neV ultra cold neutrons. A dipole magnet is excited by pulse currents in order to deliver accelerated beams to two target stations by time sharing. Their design and operational performance are discussed.
	Slides THB03 [5.621 MB]
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THP12	Status of the RCNP Cyclotron Facility
	M. Fukuda, S. Hara, K. Hatanaka, K. Kamakura, H.W. Koay, T. Kume, S. Morinobu, K. Nagayama, T. Saito, K. Shimada, H. Tamura, R. Yamanoshita, Y. Yasuda, T. Yorita RCNP, Osaka, Japan H. Ueda Okayama University, Okayama, Japan
	The Research Center for Nuclear Physics (RCNP) cyclotron facility is equipped with the K140 AVF cyclotron and K400 ring cyclotron. The cascade cyclotron system provides high quality beams for precise experiments in nuclear physics using the high resolution spectrograph Grand-RAIDEN. Recently secondarily produced DC muons has become available. Radio-isotope production is regularly carried out for fundamental research in nuclear chemistry and medicine. The upgrade program of the cyclotron facility was carried out to reduce deterioration of cyclotron equipment and to construct new beam lines for experiments using muons and high quality beams. A bending magnet using a high-temperature superconducting wire was developed for switching between two beam lines. Design of a new type of high-temperature superconducting compact AVF cyclotron is underway to promote targeted alpha-particle therapy.
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)