Dw. Scherbarth et al., DESIGN AND CONSTRUCTION OF THE 4-TESLA BACKGROUND COIL FOR THE NAVY-SMES-CABLE TEST APPARATUS, IEEE transactions on applied superconductivity, 7(2), 1997, pp. 840-843
The design and construction of a background coil being built by Westin
ghouse STC for the Navy SMES cable test apparatus are presented, One o
bjective of the Navy SMES development program is to develop and test i
mproved superconductors for SMES use, The background coil generates a
4 Tesla field on a 1.85 meter diameter SMES conductor sample, The coil
stores 49.4 MJ, and has an inner diameter of 2.13 meters. The backgro
und coil and SMES conductor sample are housed in separate, concentric
cryostats so that the SMES conductor samples can be changed without wa
rming the background coil. The background coil is a pancake style wind
ing, utilizing Rutherford cable conductor cowound with a stainless ste
el strap and mylar insulation.