Calculating/estimating Eddy currents due to B-field

[optophysicist]

Its been 15+ years since I have done any calcs like this and am very rusty, so even just a pointer in the right direction would be really appreciated...

I need to calculate/estimate the magnitude/value (IF any!) of eddy currents that would/could be generated in an ultra high speed rotating disc (>35,000 rpm) made of aluminium alloy or non-mag stainless steel, when placed/located such that it intercepts at/near the 'focus' of a electromagnetic solenoid lens (used to focus an electron beam).

Anyone?

 

[Gordianus]

If I'm not mistaken, Smithe's "Static and Dynamic Electricity" addresses that topic