While lead is a good choice for photon radiation, it is a very bad choice to shield against charged particles. Because lead is very dense (which is why it is go

While lead is a good choice for photon radiation, it is a very bad choice to shield against charged particles. Because lead is very dense (which is why it is good for xrays or gamma rays), it slows down the protons/electrons very quickly, producing brehmsstraulangw. low density materials such as acrylic or wood or concretemight be better. Although, becuase the protons are such high energy, I can't imagine how much material it would take. This stuff is very bhigh energy, and very nasty to stop. To get an idea of what kind of shielding you'd need, I'd look at the shielding used at the lhc, tevatron, and slac. they all produce particles of comparable energy. I think ECC ram might be cheaper, up to a point, maybe shielding would be better for data centers.