Is There a High Energy Particle Coming in With No Shielding?

The shield should be around 25 grams per per square centimeter to attenuate the solar radiation, but it should not be thicker than 30. At that thickness, secondary particles are created, and those secondary particles shower the inside of the craft - they could be damned deadly as well. Sowis a sweet spot, a exactly, exactly i wish they, i just for, you know, excrement and giggles.