The acceleration follows the mechanic principle, the proton energy increases with the laser intensity while it decreases when the target thickness and density increase.

The main results are as follows:(1) The intensity parameters are more useful than the other parameters for indicating the intensity of associated solar proton events.

Proton therapy consists of Conformal Proton Radiotherapy, Intensity-Modulated Proton therapy, Stereotactic Radiotherapy, Proton Scanning Radiation and et al.