“Where?”
In the article, they propose putting the magnetic shield generator in space. About 675,000 miles off Mars (320 radius lengths), in a gravitationally stable balance point (Lagrange Point L1) in Mars’ orbit around the Sun.
There it could passively sit of it’s own (lack) of weight, without fuel demands to maintain orbit (only orientation - and to produce the huge magnetic field).
Uh, sorry - perhaps my question was unclear: By “where?” what I’m asking is: Where is this 10k Gauss field measured? At the surface of the inflatable generator? (And how big is that generator?)
What I’m getting at is that 10k Gauss would be an incredible field to generate if it was being produced by an electromagnet as “small” as, oh, say, 20 miles in “radiating” diameter. That, I believe, is almost “enough”. (If we assume we only need a field density of 0.1 Gauss at an Earth radius of approximately 3960 miles, then if I calculated inverse-square correctly, that’s almost 16 kGauss @ 10 miles radius.)
This is admittedly easier than shoving a good size moon near to Mars to siphon off water in, oh, say 100 years or so trip time, but, it is still one heck of a magnet...