NASA Tests Gigantic Slingshot for Hurling Objects into Space
gizmodo.com
gizmodo.com
I don't care what the solid-state sensors can survive. It's pointless if it doesn't get into orbit, and you can't do that without putting a rocket engine on it. Rocket engines are mechanical, and very sensitive to deformation. It won't be as bad if you can get mostly beyond the atmosphere first, but applying 10^4 gs to it is going to be damn hard on just about anything macroscopic you apply to it.
Without a rocket motor it's just an expensive alternative to a weather balloon.