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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P<strong>at</strong>hway to commercializ<strong>at</strong>ion of <strong>2G</strong><br />
Metric 3 : Long Lengths<br />
In January 2007, we crossed an important milestone of 100,000 A-m.<br />
250<br />
Critical current<br />
(A/cm)<br />
200<br />
150<br />
100<br />
50<br />
0<br />
0<br />
50<br />
100<br />
150<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 />
200<br />
M<strong>in</strong>imum Ic = 173 A/cm over 595 m<br />
Ic × Length = 102,935 A-m<br />
250<br />
Uniformity over 595 m = 6.4%<br />
ISS 2007 –16–<br />
300<br />
350<br />
Position (m)<br />
400<br />
450<br />
Process<br />
(s<strong>in</strong>gle pass)<br />
500<br />
550<br />
Speed of 4 mm tape<br />
(m/h)<br />
IBAD MgO 360<br />
Homo-epi MgO 213<br />
LMO 360<br />
MOCVD 135<br />
600
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