IR Magnets for Stage 1 and Stage 2

Stage 1

Use present conductor technology for determining magnet design except for some small projected improvements (for example, 3000 A/mm2 Jc in Nb3Sn).

But feel free to be innovative in magnet design.

Stage 2

Stage 2 is 25 years away!

Expect major improvements in superconductor and magnet technology.

For example, consider HTS based magnets.

It is not realistic not to assume progress in this period.

Design IR accordingly.

But if designs and expected performance are too aggressive; please have a fall back solution, just in case!