It's called radiation hardening, there's many methods. Here's a pretty thorough paper about those used for the LHC detector: http://www-physics.lbl.gov/~spiele

It's called radiation hardening, there's many methods. Here's a pretty thorough paper about those used for the LHC detector: http://www-physics.lbl.gov/~spieler/radiation_effects/rad_tutor.pdf http://www-physics.lbl.gov/~spieler/radiation_effects/rad_tu... [PDF] Wiki link: http://en.wikipedia.org/wiki/Radiation_hardening http://en.wikipedia.org/wiki/Radiation_hardening One way is simply to use larger transistor, so that errors are more difficult to create in the first place.