Martin Wilson Lecture 1 slide 7Superconducting Magnets for Accelerators CAS Frascati Oct 2008 temperature K 250 High temperature superconductors 200 Unfortunately we only get superconducting current carrying 150 B c2 T . YBCO below the irreversibility field Yttrium Barium ritical field 100 Yttrium Barium Copper Oxide YBa 2 Cu 3 O 7 50 c Nb Table 1: Parameters of the RHIC Cable Wire diameter (mm) d w0.648 Filament diameter (mm) d f6.0 Cu/Sc ratio m 2.25 Wire twist pitch (mm) L w13 Wire coating None, (bare copper) No. of strands in cable N 30 Cable width (mm) 2c 9.73 Cable mid-thickness (mm) 2b 1.166 Cable Keystone angle (deg) 1.2 Cable lay pitch (mm) p 74 68 · Commercialization of Bi-2223 Superconducting Wires and Their Applications NEW 1. Introduction It has been more than 30 years since the high-temper-ature superconductor was discovered in 1986. At Sumitomo Electric Industries, Ltd., we started to work on applying this substance to wires and developing applied products Keywords: High temperature superconducting tapes, arrays and cables, ac losses, non-linearity. 1. Introduction High temperature superconducting tapes of the second generation (coated YBCO tapes) and devices using the tapes show a trend to penetrate markets. Steps towards commercialization are made as the price of YBCO tapes goes down and 2.2 Electrical insulation for HTS HV cable Superconducting power cables with cold-dielectric insulation rely on the combination of a lapped dielectric impregnated with the cooling fluid usually liquid nitrogen (LN2). During the various on-going and completed projects with cold- dielectric cables material investigation was done than the skin depth. We made and evaluated semi-rigid coaxial cable employing superconducting inner NbTi and surficial cupro-nickel (CuNi) or SUS304 clad. Sample name (center -outer) Center conductor outer diameter: 0.20mm Cuter conductor outer diameter: 0.86mm NbTi (CuNi13) -CuNi NbTi clad with 13mm thickness of CuNi CuNi 2. Structure of superconducting power cable The basic structure of a superconducting power ca-ble is shown in Fig. 1. There are two types of structure for three-phase AC cables: triple-core type and single-core type. In the case of single-core type, three cables are required for three phases. For both types of cable, management and protection system. However, the fault response of a superconducting TeDP power system and its components has not been well studied to date, limiting the effective capture of associated protection requirements. For example, with superconducting systems it is possible that a hotspot is formed on one of the components, such as a cable. ARC •High-Temperature Superconductor HTS •The first-generation design of an industrially scalable high-current high-temperature superconductor cable VIPER •The next-generation design of VIPER with the goal of reducing AC losses by >10x, enabling robust HTS cable in a high dB/dt environment PIT VIPER It is expected that superconducting cables can provide a new type of cable with new properties like higher current carrying capability, energy loss reduction, more compact construction and new electrical properties resulting in a wider application range. In this paper the energy loss will be treated. Design of Superconducting Magnets Teacher: Stefania Farinon (INFN Genova) 1. Introduction to electromagnetism and superconductivity, superconducting cables for applications 2. Approaches to electromagnetic design: a. s