Recent Progress in 2G HTS Wires at SuperPower
Recent Progress in 2G HTS Wires at SuperPower
Recent Progress in 2G HTS Wires at SuperPower
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Sep. 2007 : New long length record !<br />
Critical current (A/cm)<br />
350<br />
300<br />
250<br />
200<br />
150<br />
100<br />
50<br />
0<br />
77 K, Ic measured every 5 m us<strong>in</strong>g cont<strong>in</strong>uous dc<br />
currents over entire tape width of 12 mm (not slit)<br />
0 100 200 300 400 500 600 700 800<br />
ISS 2007 –18–<br />
Position (m)<br />
M<strong>in</strong>imum Ic = 190 A/cm over 790 m<br />
Ic × Length = 150,100 A-m<br />
Uniformity over 790 m = 9.7%<br />
We are gett<strong>in</strong>g very close to kilometer long <strong>2G</strong> wires !<br />
Process<br />
(s<strong>in</strong>gle pass)<br />
Speed of 4 mm<br />
tape (m/h)<br />
IBAD MgO 360<br />
Homo-epi MgO 345<br />
LMO 345<br />
MOCVD ~ 100
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