학술논문

Superconducting Properties of a Prototype Pancake Coil Using a MgB2 Rutherford-Type Stranded Conductor
Document Type
Periodical
Source
IEEE Transactions on Applied Superconductivity IEEE Trans. Appl. Supercond. Applied Superconductivity, IEEE Transactions on. 28(3):1-4 Apr, 2018
Subject
Fields, Waves and Electromagnetics
Engineered Materials, Dielectrics and Plasmas
Conductors
Wires
Prototypes
Superconducting magnetic energy storage
Hydrogen
Superconducting magnets
Temperature measurement
Superconducting magnetic energy storage (SMES)
superconducting magnets
+%24%5F{2}%24<%2Ftex-math>+<%2Finline-formula>+wires+and+tapes%22">MgB $_{2}$ wires and tapes
Language
ISSN
1051-8223
1558-2515
2378-7074
Abstract
A prototype pancake coil using a MgB 2 Rutherford-type stranded conductor for superconducting magnetic energy storage (SMES) proposed in the Advanced Superconducting Power Conditioning System was fabricated and evaluated. The conductor consisted of a CuNi former, eight MgB 2 wires and four Cu wires, with a twist pitch of 51 mm, and a pancake coil of 200 mm inner diameter, 269 mm outer diameter, and 7 mm thickness was manufactured using the wind-and-react method. The prototype coil was cooled by conduction cooling using refrigerators and the critical current under 1.5 T at 25 K exceeded 700 A. These measurements suggest that several kJ class MgB 2 SMES using MgB 2 stranded conductors could be designed appropriately in terms of the bending strain.