Design study of superconducting sextupole magnet using HTS coated conductor for neutron-focusing device
✍ Scribed by T. Tosaka; K. Koyanagi; M. Ono; T. Kuriyama; I. Watanabe; K. Tsuchiya; J. Suzuki; T. Adachi; H.M. Shimizu
- Publisher
- Elsevier Science
- Year
- 2006
- Tongue
- English
- Weight
- 384 KB
- Volume
- 445-448
- Category
- Article
- ISSN
- 0921-4534
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✦ Synopsis
We performed a design study of sextupole magnet using high temperature superconducting (HTS) wires. The sextupole magnet is used as a focusing lens for neutron-focusing devices. A neutron-focusing device is desired to have a large aperture and a high magnetic field gradient of G, where G = 2B/r 2 , B is the magnetic field and r is a distance from the sextupole magnet axis. Superconducting magnets offer promising prospects to meet the demands of a neutron-focusing device. Recently NbTi coils of low temperature superconducting (LTS) have been developed for a sextupole magnet with a 46.8 mm aperture. The maximum magnetic field gradient G of this magnet is 9480 T/m 2 at 4.2 K and 12,800 T/m 2 at 1.8 K.
On the other hand, rapid progress on second generation HTS wire has been made in increasing the performance of critical current and in demonstrating a long length. The second generation HTS wire is referred to as coated conductor. It consists of tape-shaped base upon which a thin coating of superconductor, usually YBCO, is deposited or grown. This paper describes a design study of sextupole magnet using coated conductors.